Channel Factory - Load balancing

Windows Communication Foundation (Indigo)

‹ Visual Studio 2008
- Archive
  - IE
  - Windows Vista
  - Office
  - VS 2008
  - Dotnet
  - Windows Live
  - Smart Device
  - VC++
  - Visual C#
  - VFP
  - SharePoint
  - Visual Studio
  - Game
  - ISV
  - VS Express
  - Architecture
  - VB
  - SQL Server
  - Windows Forms

- Previous
  - 1
    - Synchronizing two (or more) ScrollViewers Anybody got a good way of synchronizing two ScrollViewers My Scenario is that I am creating a custom control where the scrollbars are on the main body of the control, but there are vertical and horizontal headers in their own seperate scrollviewers that need to be kept in sync. My solution so far has been to use an Attached property to set a SynchronizerGroup attribute on a ScrollViewer. When this property gets set, I hook up to the ScrollChanged event on the ScrollViewer. Then when the event is fired on one scroll viewer, I call ScrollToHorizontalOffset or ScrollToVerticalOffset as appropriate on the other ScrollViewers with the same SyncrhonizerGroup value. This seems to lead to problems though (although it could be just my implementation): things like the scrollbar "sticking" when I try to drag it, or scroll with the mouse wheel. Anybody got a better idea Thanks, Sam Tag: Channel Factory - Load balancing
  - 2
    - Adaptive context menus Hi! How should I implement my context menu items in order to enable/disable (or show/collapse) them depeding on the item selected Best regards, Mattias Tag: Channel Factory - Load balancing
  - 3
    - Intellisense issue with CodeSnippets The new intellisense features in Orcas are great! But, it's kind of desturbing that codesnippets won't get executed when pressing the TAB key. For example: - CodeSnippet shortcut: p - writing p - pressing TAB - keyword "Partial" is written on the screen Benjamin Tag: Channel Factory - Load balancing
  - 4
    - Unremove ChangeSet.RemovedEntities Hi, is there any way to make ChangeSet.RemovedEntities not removed again I've tried adding removed 'child' entity back to it's parent like this: foreach (ChildEntity child in changeSet.RemovedEntities) { myParentEntity.ChildEntities.Add(child); } but that has no effect. Any ideas Tag: Channel Factory - Load balancing
  - 5
    - Empty <wsdl:types> Hi. I am making an application using WCF. I replacing Old Web Service with WCF Service. It is need for me that new WCF Service will interoperable with old clients, which works with old Web Service. Here example of WCF Service code and generated wsdl: WCF Service: using System; using System.Collections.Generic; using System.Text; using System.ServiceModel; using System.Runtime.Serialization; namespace WCF_Add { [ ServiceContract (Name = "Probe1" )] public interface IService1 { [ OperationContract ] Double Add( Double dbl_One, Double dbl_Two); } public class service1 : IService1 { public Double Add( Double dbl_One, Double dbl_Two) { return (dbl_One + dbl_Two); } } WSDL: < xml version="1.0" encoding="utf-8" > - < wsdl efinitions name =" service1 " targetNamespace =" http://tempuri.org/ " xmlns:wsdl =" http://schemas.xmlsoap.org/wsdl/ " xmlns oap =" http://schemas.xmlsoap.org/wsdl/soap/ " xmlns:wsu =" http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd " xmlns oapenc =" http://schemas.xmlsoap.org/soap/encoding/ " xmlns:tns =" http://tempuri.org/ " xmlns:wsa =" http://schemas.xmlsoap.org/ws/2004/08/addressing " xmlns:wsp =" http://schemas.xmlsoap.org/ws/2004/09/policy " xmlns:wsap =" http://schemas.xmlsoap.org/ws/2004/08/addressing/policy " xmlns:xsd =" http://www.w3.org/2001/XMLSchema " xmlns:msc =" http://schemas.microsoft.com/ws/2005/12/wsdl/contract " xmlns:wsaw =" http://www.w3.org/2006/05/addressing/wsdl " xmlns oap12 =" http://schemas.xmlsoap.org/wsdl/soap12/ " xmlns:wsa10 =" http://www.w3.org/2005/08/addressing " xmlns:wsx =" http://schemas.xmlsoap.org/ws/2004/09/mex " > - < wsdl:types > - < xsd chema targetNamespace =" http://tempuri.org/Imports " > < xsd:import schemaLocation =" http://localhost:8080/service1 xsd=xsd0 " namespace =" http://tempuri.org/ " /> < xsd:import schemaLocation =" http://localhost:8080/service1 xsd=xsd1 " namespace =" http://schemas.microsoft.com/2003/10/Serialization/ " /> </ xsd chema > </ wsdl:types > - < wsdl:message name =" Probe1_Add_InputMessage " > < wsdl art name =" parameters " element =" tns:Add " /> </ wsdl:message > - < wsdl:message name =" Probe1_Add_OutputMessage " > < wsdl art name =" parameters " element =" tns:AddResponse " /> </ wsdl:message > - < wsdl ortType name =" Probe1 " > - < wsdl peration name =" Add " > < wsdl:input wsaw:Action =" http://tempuri.org/Probe1/Add " message =" tns robe1_Add_InputMessage " /> < wsdl utput wsaw:Action =" http://tempuri.org/Probe1/AddResponse " message =" tns robe1_Add_OutputMessage " /> </ wsdl peration > </ wsdl ortType > - < wsdl:binding name =" BasicHttpBinding_Probe1 " type =" tns robe1 " > < soap:binding transport =" http://schemas.xmlsoap.org/soap/http " /> - < wsdl peration name =" Add " > < soap peration soapAction =" http://tempuri.org/Probe1/Add " style =" document " /> - < wsdl:input > < soap:body use =" literal " /> </ wsdl:input > - < wsdl utput > < soap:body use =" literal " /> </ wsdl utput > </ wsdl peration > </ wsdl:binding > - < wsdl ervice name =" service1 " > - < wsdl ort name =" BasicHttpBinding_Probe1 " binding =" tns:BasicHttpBinding_Probe1 " > < soap:address location =" http://localhost:8080/service1 " /> </ wsdl ort > </ wsdl ervice > </ wsdl efinitions > I don't understand where definitions of tns:Add and tns:AddResponse in section < wsdl:types >. Please help! Tag: Channel Factory - Load balancing
  - 6
    - How to retrieve the query portion of the startup Uri of the Xbap I want to pass some data into the xbap application via the query portion of the startup Uri. However, I couldn't find a way to retrieve it. I have tried AppDomain .CurrentDomain.SetupInformation.ActivationArguments.ActivationData and BrowserInteropHelper .Source, but both of them have the query portion removed. Is there a way to retrieve the query portion of the startup Uri of the Xbap Tag: Channel Factory - Load balancing
  - 7
    - Any limit on Encryption Key length allowed for export from the US? I am trying to secure a web service that can be deployed to customers in US and other countries. If I were to use a long encryption key (e.g. 256 bits) to secure the message exchanged with the web service, can such web service be freely exported from the US If not, what is the maximum encryption key length that can be exported from the US Thank you. Tag: Channel Factory - Load balancing
  - 8
    - Best way to close proxy channel? I have the following code that cleans up a proxy/channel by closing it. I wanted to see if there are other states I should be checking for when closing. I think the remaining states I'm not looking at (i.e., that the code below assumes it is okay to call Close() on) are: - Opened - Opening - Created What about Created Would it simply be better to check for Opened or Opening and only close for those states Is there any documentation that states what actions are valid from what states. I know that the interface (ICommunicationObject) is used by several classes, so I'm also curious to know if such state documentation would apply to all classes that implement this interface, or if it is potentially different in each class. Code Block if (_serviceProxy != null ) { IChannel channel = ( IChannel )_serviceProxy; CommunicationState state = channel.State; if (state != CommunicationState .Closed && state != CommunicationState .Closing && state != CommunicationState .Faulted) { channel.Close(); } } Any information would be greatly appreciated. Tag: Channel Factory - Load balancing
  - 9
    - GridView problem Hello, in our project we want to show a data grid with name-value pairs within every item of a ListBox. To achieve this, a ListView and a nested GridView is defined in the item's DataTemplate. The xaml and code-behind files of a simple project are attached at the end of this message to show our approach. After the program is started, click the "Populate" button, to fill the list with items. The data grid of every item is filled with the name-value pairs. All looks like intended. To show our problem, you must restart the program. Befor populating the list, click the "Change Visibility" button. This hides the parent of the ListBox (visibility is set to hidden not to collapsed). Now click the "Populate" button to fill the list. After that, click the "Change Visibility" button a second time to show the list again. Unlike the first test, this time all columns are only as wide as the header. The text in all content-rows is clipped. Our expectations were, that all columns are still as wide as the widest content. Can anybody help us with this problem Is this a bug in our code, or an issue in the GridView Thanks in advance for your help. Tag: Channel Factory - Load balancing
  - 10
    - Cast Proxy to IClientChannel I tried to cast a ChannelFactory-created proxy to IClientChannel to find out the State of the Channel like joe zhou - MSFT said; http://forums.microsoft.com/MSDN/ShowPost.aspx PostID=1125710&SiteID=1 But in Debug-Mode when I add a watch of DirectCast(MyProxy, IClientChannel).State it says that it is unable to cast MyProxy to IClientChannel. Thx for helping. Tag: Channel Factory - Load balancing
  - 11
    - Adding properties to entities in partial classes Imagine this query: Code Snippet ObjectQuery c = new ObjectQuery("SELECT VALUE c FROM Northwind.Customers"); It works just fine. And then add something like: Code Snippet partial class Customer { public string Tubo { get { return "Help"; } } } You'll get an exception: Code Snippet + $exception {"Specified cast from a materialized 'EntityFrameworkModel.Customer' to 'EntityFramework.Customer' is not valid. Use a generic type parameter compatible with the data being returned."} System.Exception {System.InvalidOperationException} Obviously this added property nukes the query. Why is that and is there a way to avoid it Tag: Channel Factory - Load balancing
  - 12
    - Net 1.1 client fails to connect to WCF service Hi I'm having a WCF-Service on an IIS-Host with two endpoints - on is wsHttpBinding and the other basicHttp. As long as I generate my clients with svcutil, all works fine. But when I'm using the classic "Add Web Reference" to consume the basicHttpBinding under VS 2005, I got the exception "An error occured when verifying security for the message.". I'm using TransportWithMessageCredentials-Security. For consuming wsHttpBinding I need WSE 3.0, but do I require something for the basicHttpBinding too Tag: Channel Factory - Load balancing
  - 13
    - SecurityToken encryption I want to override the GetInfoCardSecurityToken function in the ClientCredential class. In this override i return my own GenericXmlSecurityToken class. I create a SamlSecurityToken and put in into the GenericXmlSecurityToken class. So far everything goes fine. When the RSTR message is send i get this error: An unsecured or incorrectly secured fault was received from the other party. See the inner FaultException for the fault code and detail. Inside the trace message i see a plain Saml assertion in the RSTR message: Code Snippet <saml:Assertion MajorVersion="1" MinorVersion="1" AssertionID="_10edda74-3e04-4fe0-9269-8856df0ec16b" Issuer=" http://schemas.xmlsoap.org/ws/2005/05/identity/issuer/self " IssueInstant="2007-04-20T05:58:38.149Z" xmlns:saml="urn:oasis:names:tc:SAML:1.0:assertion"> <saml:Conditions NotBefore="2007-04-20T05:53:38.102Z" NotOnOrAfter="2007-04-20T15:58:38.102Z"></saml:Conditions> <saml:Advice></saml:Advice> <saml:AttributeStatement> <saml:Subject> <saml:SubjectConfirmation> <saml:ConfirmationMethod></saml:ConfirmationMethod> I guess it's suppost to look like this: Code Snippet http://www.w3.org/2001/04/xmlenc #"> <xenc:EncryptedData xmlns:xenc=" http://www.w3.org/2001/04/xmlenc #"> <xenc:EncryptionMethod Algorithm=" http://www.w3.org/2001/04/xmlenc#aes256-cbc"></xenc:EncryptionMethod > <KeyInfo xmlns=" http://www.w3.org/2000/09/xmldsig #"> <e:EncryptedKey xmlns:e=" http://www.w3.org/2001/04/xmlenc #"> <e:EncryptionMethod Algorithm=" http://www.w3.org/2001/04/xmlenc#rsa-oaep-mgf1p "> <DigestMethod Algorithm=" http://www.w3.org/2000/09/xmldsig#sha1"></DigestMethod > </e:EncryptionMethod> <KeyInfo> <o:SecurityTokenReference> <X509Data> <X509IssuerSerial> <X509IssuerName>E=support@cacert.org, CN=CA Cert Signing Authority, OU=http://www.cacert.org, O=Root CA</X509IssuerName> <X509SerialNumber>223405</X509SerialNumber> </X509IssuerSerial> </X509Data> </o:SecurityTokenReference> </KeyInfo> <e:CipherData> <e:CipherValue></e:CipherValue> </e:CipherData> </e:EncryptedKey> </KeyInfo> <xenc:CipherData> <xenc:CipherValue></xenc:CipherData> </xenc:EncryptedData> How do i encrypt the SamlSecurityToken and put i inside the GenericXmlSecurityToken class Tag: Channel Factory - Load balancing
  - 14
    - connection string issue I am trying to create a wpf application using entities. I created the model the app.config looks like this < xml version="1.0" encoding="utf-8" > <configuration> <connectionStrings> <add name="NorthwindEntities" connectionString="metadata=.\Model1.csdl|.\Model1.ssdl|.\Model1.msl;provider=System.Data.SqlClient;provider connection string="Data Source=.;Initial Catalog=Northwind;Integrated Security=True"" providerName="System.Data.EntityClient" /> </connectionStrings> </configuration> NorthwindEntities northwind = new NorthwindEntities(); foreach (Customers c in northwind.Customers) { Debug.WriteLine(c.CustomerID); } I get the error input path does not exist, what could be wrong Thanks Tag: Channel Factory - Load balancing
  - 15
    - Capturing user changes to controls and playing them back Hello, I have a query about an application I am currently in the very early planning stages for. My apologies if this isn't the right place to post this, or it is too high level (any suggestions on other places to post etc etc would be most welcome!) I'm trying to establish: a) whether WPF might be a sensible platform to use b) how easily my requirements might be met and c) if anyone knows of any example code that does anything (vaguely) similar already I am not particularly experienced in actual use of WPF (beyond some simple examples) but have read about it with interest. The application is meant to display data in a series of interactive controls (e.g. data grids, filters, graphs etc) and the key requirement I'm focusing on is whether the user actions (e.g. what they focus on with the mouse, filters/values they change) could be easily recorded and then played back within the controls - sort of like a video recording, but one where it is the actual controls that are being moved about and playback could be paused, allowing someone to diverge from the path of the recorded "video". For that reason, it wouldn't work to simply use a Camtasia style approach to capture screen video. I see that WPF has pretty powerful animation features built in and I like the idea of the strong visual features for this project. I'm guessing a potential high-level solution might be something along the following lines: i) Create my data bound controls ii) User starts a recording iii) Events capture the status of controls at different points in time iv) Stop recording To play back recording: v) reload the same data set that the controls were linked to vi) Run an animation that moves the controls in line with the captured statuses So far, I've only really seen examples that played with animations that were set up at design time. I guess I'd be looking at needing some code to read in my captured control statuses and then run that as an animation Clearly it would help to make this as generic as possible, so that lots of recordings could be made and that ideally lots of different controls/changes could be captured. Any obvious pitfalls I might need to watch out for And are there any examples of apps that might do something similar out there (WPF or not; plus ideally with code available, but am keen to see it in action whatever) Many thanks, Neil PS If I've left out any other key info or I need to clarify something, please let me know. Tag: Channel Factory - Load balancing
  - 16
    - Installation of Visual Studios 2008 Visual Web Designer Express Edition Fails all the time on WinXP SP2 Every time I try to install Visual Web Designer 2008 Beta 2 Express Edition, the installation fails. I did not download the "img" file, as I did it with the actual site download. I do get the files to "download" as it seems, but when it comes to install, I get hit with errors. I understand that this is a BETA product, but for people to actually test this product, the installation process should be totally done no matter the errors, in other words, regardless of whether one gets an error or not, the installation should never fail at all. So, the only other thing that I can do is redo everything, but I doubt that that will work. This "failed" installation problem is driving me to not want to get Visual Studios 2008 Express Edition at all, but I don't want to do that since I would like to have the suite of dev tools. If there is anyone else that has found any way to get the VWD2008 on a WinXP computer, I would really appreciate knowing the steps taken. Tag: Channel Factory - Load balancing
- Next
  - 1
    - Retrieve CheckBox Value from Listbox Hello all I have a ListBox with DataTamplate which contains a checkbox (not binded) and a textblock (binded). I need window ok button click to retrieve each item CheckBox value. How can I do this How can I even retrieve the CheckBox object from an Item ListBox.Items is actually a DataRowView because of the binding and not a ListBoxItem Please only answer to me on how to retrieve the CheckBox value of an Item. Thanx Itzik Tag: Channel Factory - Load balancing
  - 2
    - how to get the value of a component before resizing and after resizing in a inkcanvas? hello,everyone: I add 4 button in a inkcanvas. the positions of them is different.I set EditingMode ="Select". now, I select two buttons of them, and then,I resize these two button. I want to get the position information of every selected button before its size is changed and after its size is changed. how can I do it I know that I can add SelectionResizing event to the inkvcanvas like follows.but I just get the info about the whole selected button. void MyInkCanvas_SelectionResizing(object sender, InkCanvasSelectionEditingEventArgs e) { Rect newRect = e.NewRectangle; Rect oldRect = e.OldRectangle; } please help me! thanks Tag: Channel Factory - Load balancing
  - 3
    - Maximizing Response Stream Performance I've successfully tested a WCF client & service using both basicHttp and netTcp bindings with Streaming enabled. The code on the client looks like: using ( Stream stream = client.GetImage(ir)) { ... int readbytes = stream.Read(image, offset, 10000000); ... } However, when using HTTP the readbytes are always 4K, and when using TCP the readbytes are ~64K. My ultimate goal is to maximize performance, and I'd like to know several details about how the streaming is working. 1.) Is there any buffering on the client by WCF such that although only 4K is returned by the stream.Read() call, a round trip to the service did not occur 2.) How can I increase the number of bytes returned by each Read This is a 'secure' intranet application. I'm less concerned about DOS attacks in this scenario than performance. Tyke Tag: Channel Factory - Load balancing
  - 4
    - SvcUtil generating bad proxies against interface extending generic interface We have several empty service interfaces (one per service) which ALL extend a base interface that uses generics (interface foo<T>). We can generate the proxy just fine for 1 service, but when we try to bulk generate for all our services that extend the base generic service things go haywire... one service proxy will generate with return types for other services, etc. Anyone have experience with this problem We are trying out the /r switch and the merge switch to add them to an exisitng dll in a batch one by one to hopefully avoid the problem since one at a time works, but we would prefer to execute it all in one shot. Any thoughts Thanks! Greg Tag: Channel Factory - Load balancing
  - 5
    - PresentationCore exception / unspecified error on the render thread Hello everybody. I keep getting a PresentationCore exception sometimes when I start my WPF program and I cannot figure out how to solve it. Below is all the error information, I could collect: First of all, the stack traces: - If I catch the error in my apps DispatcherUnhandledException event handler , I get the information: Source: PresentationCore Message: An unspecified error occurred on the render thread. StackTrace: at System.Windows.Media.MediaContext. NotifyPartitionIsZombie (Int32 failureCode) at System.Windows.Media.MediaContext.NotifyChannelMessage() at System.Windows.Interop.HwndTarget.HandleMessage(Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Interop.HwndSource.HwndTargetFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) InnerException: null - If I catch the error with a global try/catch block around "myApp.Run()" , I get a more complete stack trace: at System.Windows.Media.MediaContext. NotifyPartitionIsZombie (Int32 failureCode) at System.Windows.Media.MediaContext.NotifyChannelMessage() at System.Windows.Interop.HwndTarget.HandleMessage(Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Interop.HwndSource.HwndTargetFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter) at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame) at System.Windows.Threading.DispatcherOperation.Wait(TimeSpan timeout) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter) at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method) at MDC.Main.MDCInitializer.SplashMDCStarter (Object sender, EventArgs args) in I:\...\Main\MDCInitializer.xaml.cs:line 217 at System.Windows.Threading.DispatcherTimer.FireTick(Object unused) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state) at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter) at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.Run() at System.Windows.Application.RunInternal(Window window) at System.Windows.Application.Run(Window window) at System.Windows.Application.Run() at MDC.MDCApplication.Main(String[] args) in I:\...\MDC.cs:line 38 - I use MessageBox.Show in in the global catch block to display the message about the catched unhandled exception to the user. In case of the above PresentationCore error, this MessageBox.Show commad immediatly causes yet another exception . (Nevertheless, it IS visible on the screen, i.e. the exception occurs after the message box has been drawn!). Source: PresentationCore Message: Exception from HRESULT: 0x88980406 StackTrace: at MS.Internal.HRESULT.Check(Int32 hr) at System.Windows.Media.Composition.DUCE.Channel.SyncFlush() at System.Windows.Media.Composition.DUCE.CompositionTarget.UpdateWindowSettings(ResourceHandle hCompositionTarget, RECT windowRect, Color colorKey, Single constantAlpha, MILWindowLayerType windowLayerType, MILTransparencyFlags transparencyMode, Boolean isChild, Boolean isRTL, Boolean renderingEnabled, Int32 disableCookie, Channel channel) at System.Windows.Interop.HwndTarget.UpdateWindowSettings(Boolean enableRenderTarget, List`1 channelList) at System.Windows.Interop.HwndTarget.UpdateWindowPos(IntPtr lParam) at System.Windows.Interop.HwndTarget.HandleMessage(Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Interop.HwndSource.HwndTargetFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter) at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.HwndSubclass.DefWndProcWrapper(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.UnsafeSendMessage(IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam) at System.Windows.Window.InternalClose(Boolean shutdown, Boolean ignoreCancel) at System.Windows.Application.DoShutdown() at System.Windows.Application.ShutdownImpl() at System.Windows.Application.ShutdownCallback(Object arg) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state) at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter) at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.MessageBox(HandleRef hWnd, String text, String caption, Int32 type) at System.Windows.MessageBox.ShowCore(IntPtr owner, String messageBoxText, String caption, MessageBoxButton button, MessageBoxImage icon, MessageBoxResult defaultResult, MessageBoxOptions options) at System.Windows.MessageBox.Show (String messageBoxText, String caption, MessageBoxButton button, MessageBoxImage icon) at MDC.MDCApplication.Main(String[] args) in I:\...\MDC.cs:line 49 at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()" Some additional information, which might help: As far as I can tell, I got the error the first time briefly after I changed my graphics card (and with it the graphics driver) from NVIDIA GeForce 6600 to ATI X1950Pro (AGP) a few weeks ago; so maybe there is a connection, maybe not. (I am using the latest ATI Catalyst v7.1 XP32bit driver.) The error occurs during my programs' custom initialization steps at startup (each step is packed in an anonymous method for the dispatcher in the code and invoked synchronously on the app thread). Since one of the init steps is to load loose XAML resource dictionaries containing styles, i.e. a "graphics related" initialization step, I first thought, this could be the cause. However, the error also occured when skipping the styles loading step (it occurrred before the main window was shown, i.e. before we could get any "could not find style resource error"). The error never occurred after initialization (i.e. if it manages to display the main window after the splash screen, it is stable.) Another "softer" error, which sometimes occurs immediatly after the main window is displayed (i.e. if the above error did not occur during initialization!), may be related: The GUI "freezes"/does not repaint (no visible reaction on clicks). However, the clicks actually work and everything is immediately "unfrozen"/painted, if one just opens a menu from the menu bar. (strange...) I hope, someone can figure out, what the cause of this framework error is; I am pretty helpless and desperate with it. Thank you for your help and kind regards, Michael Grau. Tag: Channel Factory - Load balancing
  - 6
    - RichTextBox Auto-Resize for text I am using a RichTextBox and I am trying to have it behave similar to a TextBox in that it automatically resizes to the width of the text. MSDN says that the functionality is not provided. Anyone know of a way to create the functionality, or if it is possible at all Tag: Channel Factory - Load balancing
  - 7
    - Cannot install VS 2008 Beta 2 on Vista I am getting an error stating that the .NET 3.5 framework cannot be installed. It keeps failing with an error like this: [07/30/07,14:10:35] Microsoft .NET Framework 2.0SP1 (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (CBS). MSI returned error code 34 [07/30/07,15:01:46] Microsoft .NET Framework 2.0SP1 (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (CBS). MSI returned error code 34 [07/30/07,15:02:45] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0SP1 (CBS) is not installed. [07/30/07,15:39:14] Microsoft .NET Framework 2.0SP1 (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (CBS). MSI returned error code 34 [07/30/07,15:40:30] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0SP1 (CBS) is not installed. Many people have posted a similar problem on Scott Gu's blog. Anyone else run into this Tag: Channel Factory - Load balancing
  - 8
    - Two Jan 2007 Orcas Editions ? Hi Can anyone tell me the difference between Microsoft Pre-release Software Visual Studio Code Name "Orcas" - January Community Technology Preview (CTP) (Installable Bits) and Microsoft Pre-release Software Visual Studio Code Name "Orcas" - January 2007 Community Technology Preview (CTP) Both have different links yet similar files - the latter has one 700MB extra. Thanks Tag: Channel Factory - Load balancing
  - 9
    - Value cannot be null. hi I get an exception in my Host. Value cannot be null. parameter string . What are the causes of this exception BTW this is my host: using System; using System.Collections.Generic; using System.Text; using System.ServiceModel; using System.Configuration; namespace Host { class Program { static void Main( string [] args) { Uri uri = new Uri ( ConfigurationManager .AppSettings[ "addr" ]); ServiceHost host = new ServiceHost ( typeof (Contract. Service ), uri); host.Open(); Console .WriteLine( "Service listen on endpoint {0}" , uri.ToString()); Console .WriteLine( "Press ENTER to stop Service..." ); Console .ReadLine(); host.Abort(); host.Close(); } } } and this is the config file < xml version = " 1.0 " encoding = " utf-8 " > < configuration > < appSettings > < add key = " addr " value = " net.tcp://localhost:9000/Service " /> </ appSettings > < system.serviceModel > < diagnostics > < messageLogging logEntireMessage = " true " logMalformedMessages = " true " logMessagesAtServiceLevel = " true " logMessagesAtTransportLevel = " true " /> </ diagnostics > < services > < service behaviorConfiguration = " MyBehavior " name = " Contract.Service " > < endpoint address = " net.tcp://localhost/Service " behaviorConfiguration = " NewBehavior " binding = " netTcpBinding " bindingConfiguration = " DuplexBinding " name = " MyConfig " bindingName = " MyBinding " contract = " Contract.IService " listenUri = " net.tcp://localhost/Service " /> </ service > </ services > < behaviors > < endpointBehaviors > < behavior name = " NewBehavior " /> </ endpointBehaviors > < serviceBehaviors > < behavior name = " MyBehavior " > < serviceThrottling maxConcurrentSessions = " 10000 " /> </ behavior > </ serviceBehaviors > </ behaviors > < bindings > < netTcpBinding > < binding name = " DuplexBinding " sendTimeout = " 00:00:01 " transferMode = " Streamed " maxBufferPoolSize = " 10000000 " maxBufferSize = " 10000000 " maxReceivedMessageSize = " 10000000 " > < readerQuotas maxDepth = " 10000000 " maxStringContentLength = " 10000000 " maxArrayLength = " 10000000 " maxBytesPerRead = " 10000000 " maxNameTableCharCount = " 10000000 " /> < reliableSession enabled = " true " /> < security mode = " None " > < transport clientCredentialType = " None " protectionLevel = " None " /> < message clientCredentialType = " None " /> </ security > </ binding > </ netTcpBinding > </ bindings > </ system.serviceModel > </ configuration > Tag: Channel Factory - Load balancing
  - 10
    - Why does BitmapEffect load the CPU so much in this case? Hi, I don't understand why the use of a BitmapEffect in a "static" way would cause extra CPU loading. With the XAML snippet below in XamlPad, try rapidly typing into each of the three text boxes. Notice how the CPU is hardly used by the plain TextBox, but the CPU usage is much greater for the bottom two cases where DropShadowBitmapEffect is used. The drop shadow should only need to be rendered once, so what is the extra CPU loading Is there some work-around for this Thanks, Alex <Page xmlns=" http://schemas.microsoft.com/winfx/2006/xaml/presentation "> <StackPanel Width="220"> <TextBox Margin="10"></TextBox> <TextBox Margin="10"> <TextBox.BitmapEffect> <DropShadowBitmapEffect /> </TextBox.BitmapEffect> </TextBox> <Border Margin="10" Background="LightGray"> <Border.BitmapEffect> <DropShadowBitmapEffect /> </Border.BitmapEffect> <GroupBox> <GroupBox.Header> "Some text" </GroupBox.Header> <TextBox></TextBox> </GroupBox> </Border> </StackPanel> </Page> Tag: Channel Factory - Load balancing
  - 11
    - How to get a binding to not cache the data (but always query the object bounded property instead)? Hi all, I have a nice problem and was wondering if I am doing things right or wrong. Please don't comment on the control layout or behavior, I was asked by someone to do something this way and it need to work this way. 1. What I need my app to do. I need to display elements (image and video) in a layout that looks somewhat like this: | X | X | X | X | X | X | | X | \ / | X | | X | / \ | X | | X | X | X | X | X | X | << Page 1 of N >> Where each small X is a thumbnail view of the image or video and the big X in the middle is a full res view of the image or video. When a user click on a thumbnail, that thumbnail switches position with the middle full res one. The thumbnail becomes fullres and the fullres becomes thumbnail. The user can press << or >> to see the next pages if there are multiple pages generated. When the user click on the middle image, an event is triggered from the panel to my window that informs which element got selected. 2. How I did it: The way I did this, which I think is the right way is: I create a Panel that positions the element in the way describe above. The panel is also realizing the IScrollInfo interface. I will convert my panel eventually to be Virtualized. In my xaml code I wrap my panel in a scroll viewer and I hide the scroll bar (bundled in an itemcontrol). In the c# code for the window holding the panel, I handle the >> and << by using the scrollviewer nextpage and prevpage method. That all works fine. < ItemsControl Name = " SquareArtControl " ItemsSource = " {Binding} " > < ItemsControl.Template > < ControlTemplate > < ScrollViewer x:Name = " ScrollStuff " CanContentScroll = " True " HorizontalScrollBarVisibility = " Hidden " VerticalScrollBarVisibility = " Hidden " > < local:myCustomPanel x:Name = " myPanel " HorizontalContentAlignment = " Center " VerticalContentAlignment = " Center " IsItemsHost = " True " SelectionChanged = " Home_SelectionChanged " /> </ ScrollViewer > </ ControlTemplate > </ ItemsControl.Template > </ ItemsControl > 2. My problem: The problem is the fullres image in the middle. I don't want to have each thumbnail bound to a full res image as it takes too much memory. So I have my thumbnail control bounded to a thumbnail version of the image. I have a working solution but I don't like it and I've tried another solution that is more XAML but it sucks all the memory out of my system. The working ugly solution: In my datatemplate for my image data type, instead of using an Image control I use a SmartImage(derived from Image). In SmartImage.Arrange, I check the final size and if it is bigger than some value, I go fetch the full res image (using a custom DP that I've created call URI). That works fine but it is kind of a hack. protected override Size ArrangeOverride( Size arrangeSize) { if ((arrangeSize.Width > 300 || arrangeSize.Height > 300) && false == this .needBigResolutionImage) { this .tmp = this .Source; this .needBigResolutionImage = true ; this .ShowFullres(); } else if ((arrangeSize.Width <= 300 || arrangeSize.Width <= 300) && true == this .needBigResolutionImage) { this .needBigResolutionImage = false ; this .fullResImg = null ; this .Source = tmp; } return base .ArrangeOverride(arrangeSize); } The other working solution but memory intensive. The problem with that sollution is that the binding is caching the full res image forever and I have no way to mark it dirty. < DataTemplate DataType = " {x:Type local:MediaImage} " > < Border x:Name = " ImgCtrlBorder " VerticalAlignment = " Center " HorizontalAlignment = " Center " > < Image x:Name = " MediaCtrlImage " Margin = " 3 " /> </ Border > < DataTemplate.Triggers > < DataTrigger Binding = " {Binding ElementName=ImgCtrlBorder, Path=ActualHeight, Converter={StaticResource biggerThanConv}, ConverterParameter=320} " Value = " true " > < Setter Property = " Source " Value = " {Binding Path=FullRes} " TargetName = " MediaCtrlImage " /> </ DataTrigger > < DataTrigger Binding = " {Binding ElementName=ImgCtrlBorder, Path=ActualWidth, Converter={StaticResource lessThanConv}, ConverterParameter=320} " Value = " true " > < Setter Property = " Source " Value = " {Binding Path=Thumbnail} " TargetName = " MediaCtrlImage " /> </ DataTrigger > </ DataTemplate.Triggers > </ DataTemplate > 4. The question: Is this done the right way or the wrong way One way I though of doing things that would solve the caching problem is to recreated the item using the IItemContainerGenerator. When the user select a thumbnail, instead of switching the position, I would destroy the current thumbnail container and recreate it in the middle using the IItemContainerGenerator (like you do it with a VirtualizedPanel. The only problem with that is the video element would restart. What are your though Tag: Channel Factory - Load balancing
  - 12
    - Question about lambda expressions - why are parentheses required [ This is a C# 3 question. Sorry if this is the wrong forum, but I couldn't find a better one :-( ] Question Why do lambda expressions require parentheses for parameters, even when there are no parameters If there is one implicitly-typed param, you can omit the parentheses, but you cannot omit them if there are no parameters at all. I.e. can write this for a lambda with a parameter SomeType o = new SomeType(); Method1( o => o.Foo ); but you cannot write this for a lamdba with no parameters SomeType o = new SomeType(); Method2( => o.Foo ); //not valid you have to write this instead Method2( () => o.Foo ); // notice the empty parentheses Why is this important This is important because the parameterless syntax would give a great solution to the question of symbol names, which has been discussed at some length in this forum , and in several blogs elsewhere . Bascially, it is about having a compiler-checked way to refer to things like property names and so on. As shown here , the "o => o.Foo" syntax can be used to simulate named symbols. But, the leading "o" is uncessary syntactic noise IMHO, and unnecssary syntactic noise is one of the very things lambda expressions are supposed to eliminate. If we could write simply write " => o.Foo" we get a nice compact syntax. It amounts to using => as a "named symbol" operator - with no conflict at all with its main job in lamba expressions, because it still is a lambda expression. The only downside is that it won't work in attributes (see middle of this thread ), but apart from that I feel that that is a very good "symbol" solution. What do you think Tag: Channel Factory - Load balancing
  - 13
    - "Do you want to save the changes you made to the form?" - LINQ Style? Hello, I want to ask my user in a application that uses LINQ if he wants to save the changes, does LINQ provide a property on a DataContext or elsewhere I can check if any objects have been changed Or do I have to maintain my own variable to track changes Best Regards, Klaus Enevoldsen Tag: Channel Factory - Load balancing
  - 14
    - Xaml : Binding Two Controls to one data source Hello All, I'm running into a problem and I was wondering if anyone could help me out. I'm trying to data bind two combo boxes to one data table. I've got it to work, however when I change the selection of one combo box, the other one changes as well. I've seen a lot of documentation on how to solve this problem in the 2.0 framework, however, I've not seen any help on this topic so far. I would like it so that the changes between the combo boxes are independant of each other (i.e. combobox1 can select item 1, and combobox2 can select item 2) Here is my code... C#=================================================== ...In the my Page object's .xaml.cs file... DataTable table = new DataTable("table1"); DataColumn lName = new DataColumn("FullName", typeof(string)); table.Columns.Add(lName); //Add Column to Table //Create Row DataRow r1 = table.NewRow(); //Fill Data For Row r1["FullName"] = "smith, joe"; table.Rows.Add(r1); DataContext = table; //set the Page object's Data Context to the Data Table Xaml================================================== <Page.Resources> <DataTemplate x:Key="comboTemplate"> <TextBlock Text="{Binding Path=FullName}" /> </DataTemplate> </Page.Resources> <ComboBox Name="combo1" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding}" ItemTemplate="{StaticResource comboTemplate}" /> <ComboBox Name="combo2" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding}" ItemTemplate="{StaticResource comboTemplate}" /> ===================================================== Thank you in advance for your time. Also, I didn't know if this was the right forum to post this, sorry if I was wrong! jm6k Tag: Channel Factory - Load balancing
  - 15
    - Will Class designer be resurrected? http://blogs.msdn.com/classdesigner/archive/2005/03/04/384764.aspx What state was the code in when the plug was pulled Were you just 80% of the way there or, 95% with some bugs to fix. Tag: Channel Factory - Load balancing
  - 16
    - Orcas Beta 1 WPF Designer Is there any information about what additional functionality(beyond the March CTP) will be found in Beta1 Is there a list of WPF designer features planned Specifically I am interested in: 1. Localization Support - For forms, there is a Localizable property that sets up localization. Will the WPF designer have a similar property 2. Event Handlers - Will events appear in the property handler Will you be avle to add event handlers from the design surface 3. Data Binding - Is data binding a XAML code only experience Will the designer support binding 4. ListView, TreeView, Listbox - Will the designer support adding Items Will the designer support databinding to these 5. Adding user or custom controls to the tool box How much of the Blend feature set will be found in Orcas Thanks Steve Tag: Channel Factory - Load balancing

singhhome

Regarding MSDN suggestion for using Channel factory for better perfornance

http://msdn2.microsoft.com/en-us/library/aa738757.aspx

I just wanted to know, how channel factory will work in case of a service hosted on Load balancing sever. Is it Ok to use channel factory in such cases or will a channel factory couple the client to a specific server machine

Top

Re: Channel Factory - Load balancing

James.Zhang - MSFT

You need a router for the Load balancing server, please take a look at the following example : http://msdn2.microsoft.com/en-us/library/ms751497.aspx

Top