LinqDataSource Where Parameter Return All

LINQ Project General

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    - Using JpegBitmapEncoder I keep getting an OverflowException when using JpegBitmapEncoder. I've been using the post http://tinyurl.com/3dme6n as my guide... Code posted below. Any ideas Thanks! Code Block private FileInfo _file = null; public void Save() { BitmapCreateOptions opts = BitmapCreateOptions.PreservePixelFormat | BitmapCreateOptions.IgnoreColorProfile; BitmapCacheOption cache = BitmapCacheOption.None; Stream stream = _file.Open(FileMode.Open, FileAccess.ReadWrite); BitmapDecoder decoder = BitmapDecoder.Create(stream, opts, cache); BitmapFrame source = decoder.Frames[0]; InPlaceBitmapMetadataWriter meta = source.CreateInPlaceBitmapMetadataWriter(); CopyMetadataTo(meta); // attempt to save the metadata in place if (! meta.TrySave()) { // clone the input frame to perform lossless transcode BitmapFrame frame = BitmapFrame.Create(source, source.Thumbnail, meta, source.ColorContexts); JpegBitmapEncoder encoder = new JpegBitmapEncoder(); encoder.Frames.Add(frame); stream.Close(); // save over the file stream = _file.Open(FileMode.Create, FileAccess.ReadWrite); encoder.Save(stream); // <- OverflowException HERE stream.Close(); } } Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Help with Trigger inside of nested listbox templates... Hi all, i've got a situation that i'm not able to wrap my head around... I've got 2 listboxes - the first is a simple version - wrappanel layout, with images inside. This has a basic template that styles on IsSelected property. 2nd listbox is composed in a hierarchy. 1rst level panel is Stackpanel (with listboxes for each item), thenWrappanel (Horiz) for nested listboxes panel, with images layed out in this final level. Now, i'm applying the same Style (with controltemplate inside) for both the simple listbox (#1) and the nested listboxes in example #2. the style seems to 'style' both instances BUT in the 2nd (nested) instance the triggers stop working, specifically what i need is the 'hilite' on selected. I added a SelectionChange handler on the listbox itself, and items are definitely getting selected - i just can't get a visual to trigger! Code Snippet <ControlTemplate.Triggers> <Trigger Property="IsSelected" Value="True"> <Setter Property="Background" Value="#CCCCCC" /> <Setter Property="BorderBrush" Value="Aqua" /> </Trigger> </ControlTemplate.Triggers> can't for the life of me figure out why - here's the whole Style: Code Snippet <Style x:Key="listItemStyle" TargetType="{x:Type ListBoxItem}"> <Setter Property="Background" Value="Transparent" /> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type ListBoxItem}"> <Border SnapsToDevicePixels="True" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Background="{TemplateBinding Background}" BorderBrush="#666666" CornerRadius="6" BorderThickness="1"> <ContentPresenter /> </Border> <ControlTemplate.Triggers> <Trigger Property="IsSelected" Value="True"> <Setter Property="Background" Value="#CCCCCC" /> <Setter Property="BorderBrush" Value="Aqua" /> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> happy to post whole code if necessary.... any help... muchos gracias -bigshiny90 Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - access text box in style in xaml Hi, Does anyone know how to bind text box with slider. The text box should display 1-100 as text when the slider moves. The text box is in a style that i have made. Zip file with code is attached. Click here to download file. Will the binding code for the textbox change as the text box is itself in the Thumb style of the slider Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Change rectangle property from code Hi guys, i've got a rectangle i've drawn in a grid, how can i change its propertys from code, i think i need to build once or something, should i be using X:name or something...FindName, i'm a bit lost, thanks guys si Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Using JpegBitmapEncoder I keep getting an OverflowException when using JpegBitmapEncoder. I've been using the post http://tinyurl.com/3dme6n as my guide... Code posted below. Any ideas Thanks! Code Block private FileInfo _file = null; public void Save() { BitmapCreateOptions opts = BitmapCreateOptions.PreservePixelFormat | BitmapCreateOptions.IgnoreColorProfile; BitmapCacheOption cache = BitmapCacheOption.None; Stream stream = _file.Open(FileMode.Open, FileAccess.ReadWrite); BitmapDecoder decoder = BitmapDecoder.Create(stream, opts, cache); BitmapFrame source = decoder.Frames[0]; InPlaceBitmapMetadataWriter meta = source.CreateInPlaceBitmapMetadataWriter(); CopyMetadataTo(meta); // attempt to save the metadata in place if (! meta.TrySave()) { // clone the input frame to perform lossless transcode BitmapFrame frame = BitmapFrame.Create(source, source.Thumbnail, meta, source.ColorContexts); JpegBitmapEncoder encoder = new JpegBitmapEncoder(); encoder.Frames.Add(frame); stream.Close(); // save over the file stream = _file.Open(FileMode.Create, FileAccess.ReadWrite); encoder.Save(stream); // <- OverflowException HERE stream.Close(); } } Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - How to convert canvas xaml file to canvas object?? if i have one xaml file and I want to convert it into one object of canvas ex . if xaml file name is myFile.xaml. i want to write function : Code Snippet Canvas ObjCanvas = MagicConversionFunction("myFile.xaml"); So how to write the MagicConversionFunction Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - RichTextBox, turn off the default wordwrap functionality Hi, I have a RichTextBox and when I set the HorizontalScrollBarVisibility to ScrollBarVisibility.Visible it always shows, but never works because my text gets word wrapped like the wordwrap function in notepad does. Is there any way to turn this off The windows forms richtextbox seems to have a wordwrap property, but I am unable to find this property on the wpf variant. current code I use: RichTextBox rtb = new RichTextBox (); rtb.VerticalScrollBarVisibility = ScrollBarVisibility .Visible; rtb.HorizontalScrollBarVisibility = ScrollBarVisibility .Visible; Thanks in advance, Erik Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Text Box with Intellisense Hi, I would like to implement a TextBox with intellisense like it is used in Visual Studio. I have already checked others who have posted for the same. Now I am not sure whether to go for the PopUp Class or the ContextMenu from the TextBox. To me it seems that i have no access to the content of a PopUp when I try to get that content into the TextBox. The problem with the ContextMenu is, that it always gets the focus when I call it to display the possible content of the TextBox. When i force the TextBox to keep the focus, the ContentMenu disappears. Thank you very much for your suggestions cheers Silas Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - LINQ TO SQL NOT USING INDEXES I have a very simple query such as... Dim DB As New DataClassesDataContext Dim Results = From P In DB.Parties Where P.PartyName Like _Name.Text.Trim & "*" _ Order By P.PartyName _ Select P.PartyName, P.Division, P.CaseNumber GridView1.DataSource = Results GridView1.DataBind() Now, when I run this against a database of a few hundred thousand records it appears to run ok, but switch to a database of several million records and it takes about 20 seconds to run. When I look at the performance report in SQL Server Management Studio I notice that the query is doing a table scan, even though there is an index on PartyName. If I issue the same exact query in Management Studio it uses the index and returns in .01 seconds. Am I missing something here or is there a major bug in LINQ that no one has reported due to querying smaller databases Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - ListView lags with more than 200 Items Hello there, My application makes heavy use of the ListViews sorting and grouping functionallity. Now this works pretty fine for <100 items and then the ListView starts lagging to death. Even if the window containing the list is not displayed(Z-Ordered behind another window) or minimized to task bar it doesn't get better. Meanwhile I know this is about some virtualized stack panel thing but I need the functionality. Is there a trick to get the panel virtualize again after it's sorted/grouped so that at least the UI gets responsive again after the list has been sorted/grouped I surely could sort the ObservableCollection manually but I would prefere any other way of doing this task. Regards, ITD Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - WCF and ServerInterface. Hi, When doing old-school ASMX-Webservices wsdl.exe provides a way to generate a C#-interface of the server side of the webservice by invoking it with: wsdl.exe /si [somewsdlsource] However the generated interface is annotateted with the System.Web.Services attributes. Now.. it is quite easy to migrate from this ASMX interface to a WCF interface by using the ServiceContract and OperationContract instead of the WebServiceBindingAttribute and WebMethodAttribute. The problem then is: What to do with the Data All my custom datatypes in the generated interface are annotated like this: [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.XmlTypeAttribute(Namespace = "somethingsomething")] I know I could leave it as-is, but wouldn't it be better to use the DataContract/-Member attributes - thereby enabling the new XMLFormater Does anybody know of a ServerInterface option for SvcUtil.exe Thanx in advance. Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Bind XAML Element to Property of same object I want to bind a XAML element a property of the same UserControl. I think Binding ElementName is the wrong type of binding. It worked when the ImageInfo element was created in the XAML and named Info, but doesn't work now that ImageInfo is a public property of the UserControl. How do I bind to it <UserControl...>< StackPanel Orientation = " Vertical " HorizontalAlignment = " Center " AllowDrop = " True " Margin = " 0 " IsHitTestVisible = " False " Background = " Black " x:Name = " piStack " > < Image Width = " 111 " Height = " 130 " Margin = " 0,0,0,1 " Name = " image " Source = " {Binding ElementName=Info, Path=ImageSource} " /> </ StackPanel ></UserControl // Class definition of UserControl public partial class MyImage : System.Windows.Controls. UserControl public static DependencyProperty InfoProperty = DependencyProperty .Register( "Info" , typeof ( ImageInfo ), typeof ( HumaneImage ), new FrameworkPropertyMetadata ( null , FrameworkPropertyMetadataOptions .None)); public ImageInfo Info { set { SetValue(InfoProperty, value ); } get { return ( ImageInfo )GetValue(InfoProperty); } } ... Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Binding to custom DependencyProperties XAML: Code Snippet < Window x:Class = " TestDP.Window1 " xmlns = " http://schemas.microsoft.com/winfx/2006/xaml/presentation " xmlns:x = " http://schemas.microsoft.com/winfx/2006/xaml " Title = " TestDP " Height = " 300 " Width = " 300 " DataContext = " {Binding RelativeSource={RelativeSource self}} " > < StackPanel > < Button Content = " Press " IsEnabled = " {Binding CanPlay} " /> < Label Content = " {Binding Position} " /> < Label Content = " {Binding CanPlay} " /> </< FONT> StackPanel > </< FONT> Window > Code Behind: Code Snippet public partial class Window1 : System.Windows. Window { public static readonly DependencyProperty CanPlayProperty = DependencyProperty .Register( "CanPlayProperty" , typeof ( bool ), typeof ( Window1 ), new UIPropertyMetadata ( true )); public bool CanPlay { get { return ( bool )GetValue(CanPlayProperty); } set { SetValue(CanPlayProperty, value ); } } public static readonly DependencyProperty PositionProperty = DependencyProperty .Register( "Position" , typeof ( string ), typeof ( Window1 ), new UIPropertyMetadata ( "0.0" )); public string Position { get { return ( string )GetValue(PositionProperty); } set { SetValue(PositionProperty, value ); } } public Window1() { InitializeComponent(); } protected override void OnActivated( EventArgs e) { base .OnActivated(e); this .CanPlay = false ; this .Position = "2.2" ; } } When I run this code, the 'Position' property behaves as I would expect. The first label reads '2.2'. However, the button is still enabled and the second label reads 'True'. The 'CanPlay' property does not update the binding where the 'Position' property does. The only real difference I see is the data type. Can someone explain what is going on here What I am doing wrong Thanks for any help. Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Apply Custom Trace Messages to System.ServiceModel tracing? Hello. does anybody know if it is possible to apply custom tracemassages to the Activity / messages Tracing machanism of WCF The Idea behind this is to use the ScvLogViewer-Tool to display our custom tracing statements together with the WCF Trace. Thanks for any replys Marcus Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - XAML Binding Hi, how to bind the Dataset data in xaml. using Xaml Tags not in C# code. Thanks Senthil Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - wcf services issues hi, The problem i am facing with code i have posted is an Exception the port80 is currently used by some other services,so i chabged the but still the issue persists.So Plz let me know whether the code has to b changed. #include "stdafx.h" #include <iostream> using namespace std; //interface class ISimpleService; //interface class ISimpleServiceChannel; ref class SimpleServiceClient; using namespace System; using namespace System: erviceModel; using namespace System: erviceModel::Channels; [ServiceContract] interface class ISimpleService { [OperationContract] String^ GetName(String^ request); }; ref class SimpleServiceClient : ISimpleService { public: virtual String^ GetName(String^ request) { return "Success" + request; } }; int main(array<System: tring ^> ^args) { //Console::WriteLine(L"Hello World"); WSHttpBinding^ binding = gcnew WSHttpBinding(); //Object^ p= gcnew Object(); //ISimpleService^ single; Uri^ baseAddress = gcnew Uri("http://localhost:2110/TestWebService.Host/SimpleService.svc"); ServiceHost^ servicehost = gcnew ServiceHost(SimpleServiceClient::typeid,baseAddress); //(ISimpleService::typeid, baseAddress); servicehost->AddServiceEndpoint(ISimpleService::typeid,binding,baseAddress); servicehost->Open(); Console::WriteLine("The Service is running.."); System: tring^ url = "http://localhost:2110/TestWebService.Host/SimpleService.svc"; EndpointAddress^ address = gcnew EndpointAddress(url); ChannelFactory<ISimpleService^>^ channelFactory = gcnew ChannelFactory<ISimpleService^>(binding,address); ISimpleService^ channel = channelFactory->CreateChannel(); channel->GetName("Rakshit"); //System: impleServiceClient^ obj= gcnew SimpleServiceClient(); ((IChannel^)channel)->Close(); delete channelFactory; servicehost->Close(); delete servicehost; cin.get(); return 0; } Thanks, Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Help Configuring wsHttp for Windows Authentication I am trying to create a WCF service that authenticates users via Windows authentication over wsHttpBinding, but in even though all the articles I've read on the subject claim that wsHttp uses Windows authentication "out of the box" or that it "comes for free" it simply isn't working for me. I can connect when the client and server are both local, but as soon as I deploy the client to another machine, it is no longer able to connect. I get a "username must be provided" message. If I browse to the .svc file from the remote machine, I get the description page, so I'm at least confident that I have network connectivity between the machines. The basic requirements are: 1. The service is able to authenticate the client as the user credentials of the logged in user running the client. 2. The client does not prompt the user for their login name or password, and that information is not stored on the client, encrypted or otherwise. It seems to me that this is a pretty basic requirement for almost any enterprise application (one of my colleagues described it as the most common type of authentication anyone would want to do), so I don't understand why I am having so much trouble implementing it since all the authors of WCF articles seem to think it is too trivial to bother providing an example for. I have had a couple people suggest that I need to implement a ServiceAuthorizationManager and override CheckAccessCore, but best I can tell, that is not where my problem is (I have a custom policy implemented, and when testing locally, it does create a claim set and those claims do appear work as I expect). I would appreciate it if somebody could provide a complete example (and I mean complete -- IIS configuration, client and service config, code, etc.) of how to accomplish my goal. If it doesn't look like we have a problem with the configuration, any tips about where we should start looking for the problem are also appreciated. I am developing/testing on Windows XP and deploying to Windows Server 2003. (We do have reasons for using http even though we are operating in an intranet environment. All users of the client will be authenticated against the domain, and all will be in the same domain.) Thanks. Colin web.config (service): Code Snippet <system.serviceModel> <services> <service behaviorConfiguration="Behavior_INotebookUploadService" name="BiogenIdec.Library.Notebook.Common.TransferService.NotebookUploadService"> <endpoint name="NotebookUpload" address="http://cam-d045723.corp.biogen.com/NoMaDServices/NotebookUploadService.svc" binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_INotebookUploadService" contract="BiogenIdec.Library.Notebook.Common.TransferService.INotebookUploadService"/> <endpoint name="MetaData" address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/> </service> </services> <bindings> <wsHttpBinding> <binding name="WSHttpBinding_INotebookUploadService" maxReceivedMessageSize ="50000000" messageEncoding="Mtom" maxBufferPoolSize="50000000"> <readerQuotas maxArrayLength="50000000"/> <security mode="Message"> <message clientCredentialType="Windows" negotiateServiceCredential="true" establishSecurityContext="true"/> </security> </binding> </wsHttpBinding> </bindings> <behaviors> <serviceBehaviors> <behavior name="Behavior_INotebookUploadService"> <serviceMetadata httpGetEnabled="true"/> <serviceDebug includeExceptionDetailInFaults="true"/> <serviceAuthorization principalPermissionMode="Custom"> <authorizationPolicies> <add policyType="BiogenIdec.Library.Notebook.Common.TransferService.Claims.ClaimsAuthorizationPolicy, Notebook Common" /> </authorizationPolicies> </serviceAuthorization> <serviceCredentials> <windowsAuthentication allowAnonymousLogons="false" includeWindowsGroups="false" /> </serviceCredentials> </behavior> </serviceBehaviors> </behaviors> </system.serviceModel> app.config (client): Code Snippet <system.serviceModel> <bindings> <wsHttpBinding> <binding name="NotebookUpload" hostNameComparisonMode="StrongWildcard" maxReceivedMessageSize="50000000" messageEncoding="Mtom" maxBufferPoolSize="50000000"> <readerQuotas maxArrayLength="50000000" /> <security mode="Message"> <message clientCredentialType="Windows" negotiateServiceCredential="true" establishSecurityContext="true"/> </security> </binding> </wsHttpBinding> </bindings> <behaviors> <endpointBehaviors> <behavior name="uploadBehavior"> <clientCredentials> <windows allowedImpersonationLevel="Delegation" /> </clientCredentials> </behavior> </endpointBehaviors> </behaviors> <client> <endpoint name="NotebookUpload" behaviorConfiguration="uploadBehavior" address="http://cam-d045723.corp.biogen.com/NoMaDServices/NotebookUploadService.svc" binding="wsHttpBinding" bindingConfiguration="NotebookUpload" contract="BiogenIdec.Library.Notebook.Common.NotebookUpload.INotebookUploadService"> </endpoint> </client> </system.serviceModel> Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - wcf service certificate application error I am trying to create a wcf application in which server is secured by certificate and client has no authentication at its end.I am using transport security. Whenever i try to generate proxy for client using svcutil and with the following config in the service application, it gives error " Error: Cannot obtain Metadata from https://localhost:8001/DotNetFunService/mex.If this is a Windows (R) Communication Foundation service to which you have access, please check that you have enabled metadata publishing at the specified address. For help enabling metadata publishing, please refer to the MSDN documentation at http://go.microsoft.com/fwlink/ LinkId=65455 . WS-Metadata Exchange Error URI: https://localhost:8001/DotNetFunService/mex Metadata contains a reference that cannot be resolved: 'https://localhost:80 01/DotNetFunService/mex'. An error occurred while making the HTTP request to https://localhost:8001/Do tNetFunService/mex. This could be due to the fact that the server certificate is not configured properly with HTTP.SYS in the HTTPS case. This could also be cau sed by a mismatch of the security binding between the client and the server. The underlying connection was closed: An unexpected error occurred on a send Authentication failed because the remote party has closed the transport stream ." Service config file is as follows:- <system.serviceModel> <bindings> <wsHttpBinding> <binding name="TransportBinding"> <security mode="Transport"> <transport clientCredentialType="None" proxyCredentialType="None" /> <message clientCredentialType="None" establishSecurityContext="true" /> </security> </binding> </wsHttpBinding> <mexHttpsBinding> <binding name="NewBinding0" /> </mexHttpsBinding> </bindings> <serviceHostingEnvironment /> <behaviors> <serviceBehaviors> <behavior name="MetaDataBehavior"> <serviceMetadata httpsGetEnabled="true" httpsGetUrl=" https://localhost:8001/DotNetFunService " /> <serviceCredentials> <serviceCertificate findValue="CN=WSE2QuickStartServer" storeLocation="CurrentUser" storeName="My" x509FindType="FindBySubjectDistinguishedName" /> </serviceCredentials> </behavior> </serviceBehaviors> </behaviors> <services> <service behaviorConfiguration="MetaDataBehavior" name="BasicServiceHost.DotNetFunService"> <endpoint address=" https://localhost:8001/DotNetFunService " binding="wsHttpBinding" bindingConfiguration="TransportBinding" name="ep1" contract="BasicServiceHost.IDotNetFunServiceContract" /> <endpoint address=" https://localhost:8001/dotnetfunservice/mex " binding="mexHttpsBinding" bindingConfiguration="NewBinding0" name="ep2" contract="IMetadataExchange" /> </service> </services> </system.serviceModel> Can somebody please let me know as how to resolve this issue. Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Microsoft.VisualStudio.Shell.WindowPane.OnCreate() Hello, I get the follwing error in orcas when I try to get the projet's properties : An error occurred trying to load the page. Microsoft.VisualStudio.Shell.WindowPane.OnCreate() Anybody could help me out Thanks a lot! Regards, Fabian Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - ELINQ/LINQ : Sum doesn't support null values ? Hello, I'm trying to sum elements from a collection member in a class. This class A is an entity and another entity B is mapped as a collection in the first one, with a foreign key. So I have: Code Snippet class A { ... EntityCollection my_collection } This class is generated from .csdl, etc... files. OK. Now I can sum all B elements in my database: Code Snippet m_oEntity.A.Where(d => d is xxx AnySpecificCriteria xxx).Sum(s => s.my_collection.Count); If my database is empty or if the Where clause doesn't return any result, Sum will throw an exception because it doesn't support null values. Does it mean that I need to do this operation in 2 times So I tried this: Code Snippet var dev = m_oEntity.A.Where(d => (d is xxx) && (d.my_collection.Count > 0)); if (dev != null ) { var my_sum = dev.Sum(s => s.CMeasure.Count); Output(my_sum.ToString()); } else { Output( "0" ); } But (dev != null) is true as it is "empty" and if I do: Code Snippet var dev = m_oEntity.A.Where(d => (d is xxx) && (d.my_collection.Count > 0)); if (dev.Count > 0) { var my_sum = dev.Sum(s => s.CMeasure.Count); Output(my_sum.ToString()); } else { Output( "0" ); } I have a compiling error because of dev type... So, wha'ts the solution Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Must Specify both Property and Value for Setter Hi I'm getting the error "Must Specify both Property and Value for Setter" in blend for the following XAML; <Style x:Key="flatButton" TargetType="{x:Type Button}"> <Setter Property="Foreground" Value="blue"/> <Setter Property="Control.Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type Button}"> <Border BorderThickness="1,1,1,1" BorderBrush="Transparent" Padding="2" Background="white" Name="Bd"> <ContentPresenter /> </Border> <ControlTemplate.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="Background" Value="orange" TargetName="Bd" /> <Setter Property="BorderBrush" Value="black" TargetName="Bd" /> <Setter Property="BorderThickness" Value="1,1,1,1" TargetName="Bd" /> </Trigger> <Trigger Property="IsEnabled" Value="False"> <Setter Property="Foreground" Value="red" /> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> It looks ok to me but I can't see why Blend is complaining and giving the error. Cheers, Stephen Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - DataBind KeyTime property of a storyboard? I know this is possible but I can't figure it out for the life of me - I want to animate a heart rate indicator, so that it looks like a beating heart. I have created an image and given it a render transform and an accompanying storyboard. When the storyboard has a fixed keytime, everything works perfectly. What I want to do though, is have that keytime be dependent on an object property in the DataContext of the window. To that end, I have done the following: < Grid DataContext= "{StaticResource nimsDeviceList}" > < Grid.Resources > < Storyboard x:Key= "HeartImageLoaded" >  < DoubleAnimationUsingKeyFrames BeginTime= "00:00:00" Storyboard.TargetName= "heartRateImage" Storyboard.TargetProperty= "(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)" AutoReverse= "True" RepeatBehavior= "Forever" > < SplineDoubleKeyFrame KeyTime= "{Binding Path=HeartRate,Converter={StaticResource HRateConverter}}" Value= "1.3" /> </ DoubleAnimationUsingKeyFrames > < DoubleAnimationUsingKeyFrames BeginTime= "00:00:00" Storyboard.TargetName= "heartRateImage" Storyboard.TargetProperty= "(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)" AutoReverse= "True" RepeatBehavior= "Forever" > < SplineDoubleKeyFrame KeyTime= "{Binding Path=HeartRate,Converter={StaticResource HRateConverter}}" Value= "1.3" /> </ DoubleAnimationUsingKeyFrames > </ Storyboard > </ Grid.Resources > < Grid.Triggers > < EventTrigger RoutedEvent= "FrameworkElement.Loaded" SourceName= "heartRateImage" > < BeginStoryboard Storyboard= "{StaticResource HeartImageLoaded}" /> </ EventTrigger > </ Grid.Triggers > </ Grid > When I do this, set a Binding on the KeyTime, it no longer works. Now, here's the thing - that Converter function IS CALLED - but it doesn't appear to be using the output of the converter to change the period of the animation. Should I be doing this another way Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Referencing a BaseType in an assembly. Is it possible (or will it be possible) to do something like this: < EntityType Name = " NamedEntityBase " BaseType = " Common.Data.EntityBase, Common " > ... If not, it sure would be nice. Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - ControlDesigner for WPF custom controls. Greetings . I'm working on a custom WPF user control which acts like a button (and surprisingly inherits Button). However, my button has some limitations for designtime (The size is constant, the color scheme is pre-defined in an enumeration etc..). Therefore, I want people who use my control in design time, to be able to do only things I allow. In WinForms, I could create myself a MyButtonDesigner : ControlDesigner, and override the PostFilterProperties method and there remove unwanted properties (or add/change etc..). Unfortrantly, I could not find a replacement to the System.Windows.Forms.Design.ControlDesigner class for WPF... Is there any solution out there Code Snippet displaying what I am looking for, written for WinForm .. public class MyButtonDesigner : System.Windows.Forms.Design.ControlDesigner { public MyButtonDesigner() { } protected override void PostFilterProperties( IDictionary properties ) { properties.Remove( "ForeColor" ); properties.Remove( "Size" ); } } Best Regards, Doron. Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Bizarre bahavior concerning identity tracking of entity objects versus query I am seeing some behavior that looks odd. It has to do with the identity tracking of entity objects versus querying the same object from the database. What I have found is that if I perform a DLINQ query, an entity's membership in the results set is determined by querying the actual database, but if that entity is already in the DataContext cache, the cached object is returned in the results set. This can be odd because the state of that entity in the database may be inconsistent with the state of the entity in the cache. As an example, I will query a specific customer, LONEP from Northwind. LONEP's region is OR. I can then change his country to United States in the entity object. It is USA in the database. Then, i will query all customers in WA, which will omit LONEP since his region is OR. Then, I will change LONEP's region to WA in the database via ADO.NET. So now, LONEP's region in the cached entity object is OR, and his country is United States. But, his region in the database is WA and his country is USA. Then, I will perform the same query for all customers in WA again, and now, LONEP's region in the database is WA, so it get's included in the results set, but the entity object that is returned in the results set is the cached one whose region is still OR. So, i just performed a query for customers whose region is WA, but got an entity object whose region is OR. Very odd, and it seems problematic. Here is some example code: Northwind db = new Northwind(@"Data Source=.\SQLEXPRESS;Initial Catalog=Northwind;Integrated Security=SSPI;"); // Let's get a cutomer to modify that will be outside our query of region == 'WA'. Customer cust = (from c in db.Customers where c.CustomerID == "LONEP" select c).Single<Customer>(); // Let's change his country so that the entity object for that entity is modeified. cust.Country = "United States"; Console.WriteLine("Customer {0} has region = {1}, country = {2}.{3}", cust.CustomerID, cust.Region, cust.Country, System.Environment.NewLine); // Ok, LONEP's region is OR. And now his country is United States. // Now, let's get a sequence of customers from 'WA', which will not include LONEP // since his region is OR. IEnumerable<Customer> custs = (from c in db.Customers where c.Region == "WA" select c); Console.WriteLine("Customers from WA before ADO.NET change - start ..."); foreach(Customer c in custs) { // Display each entity object's Region and Country values. Console.WriteLine("Customer {0}'s region is {1}, country is {2}.", c.CustomerID, c.Region, c.Country); } Console.WriteLine("Customers from WA before ADO.NET change - end.{0}", System.Environment.NewLine); // Now I will change LONEP's region to WA, which would have included it // in that previous query's results. // Change the customers' country through ADO.NET. Console.WriteLine("Updating LONEP's region to WA in ADO.NET..."); string cmd = "update Customers set Region = 'WA' where CustomerID = 'LONEP'"; System.Data.SqlClient.SqlConnection sqlConn = new System.Data.SqlClient.SqlConnection( @"Data Source=.\SQLEXPRESS;Initial Catalog=Northwind;Integrated Security=SSPI;"); System.Data.SqlClient.SqlCommand sqlComm = new System.Data.SqlClient.SqlCommand(cmd); sqlComm.Connection = sqlConn; try { sqlConn.Open(); // Insert the record. Console.WriteLine("Executing SQL statement against database with ADO.NET ..."); sqlComm.ExecuteNonQuery(); Console.WriteLine("Database updated."); } finally { // Close the connection. sqlComm.Connection.Close(); } Console.WriteLine("LONEP's region updated.{0}", System.Environment.NewLine); Console.WriteLine("So LONEP's region is WA in database, but ..."); Console.WriteLine("Customer {0} has region = {1}, country = {2} in entity object.{3}", cust.CustomerID, cust.Region, cust.Country, System.Environment.NewLine); // Now, LONEP's region is WA in database, but still OR in entity object. // Now, let's perform the query again. // Display the customers entity object's region and country again. Console.WriteLine("Query entity objects after ADO.NET change - start ..."); foreach(Customer c in custs) { // Display each entity object's Region and Country values. Console.WriteLine("Customer {0}'s region is {1}, country is {2}.", c.CustomerID, c.Region, c.Country); } Console.WriteLine("Query entity objects after ADO.NET change - end.{0}", System.Environment.NewLine); That last DLINQ query in bold (the foreach enumerating through custs causing the query to be performed again because of deferred queries) is retrieving customers whose region is WA, but when I display the results, the region is OR. Here is the output from the program: Customer LONEP has region = OR, country = United States. Customers from WA before ADO.NET change - start ... Customer LAZYK's region is WA, country is USA. Customer TRAIH's region is WA, country is USA. Customer WHITC's region is WA, country is USA. Customers from WA before ADO.NET change - end. Updating LONEP's region to WA in ADO.NET... Executing SQL statement against database with ADO.NET ... Database updated. LONEP's region updated. So LONEP's region is WA in database, but ... Customer LONEP has region = OR, country = United States in entity object. Query entity objects after ADO.NET change - start ... Customer LAZYK's region is WA, country is USA. Customer LONEP's region is OR, country is United States. Customer TRAIH's region is WA, country is USA. Customer WHITC's region is WA, country is USA. Query entity objects after ADO.NET change - end. Notice the line in bold/underline above. That entity, LONEP, was returned from a query retrieving customers whose region is WA, yet the entity object has a region of OR. This seems problematic to me. Thanks. Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Can't connect to remote SQL servers? Hi all, (Not sure if I should post this in the ADO.NET sub-forum ) I have installed both "Visual C# 2008 Express Beta 2" and "SQL Server 2005 Express", on my home PC and at work. I am aware that you have to jump thru many hoops to get "SQL Server 2005 Express" to accept remote connections using SQL user logins. I did all that and successfully tested using osql.exe connecting over the internet to a SQL Server 2005 Express (between work and home). My question: It looks like the Orcas IDE does not allow creation of a data connection to a remote server. It only accepts being pointed to a .mdf file, I was expecting to find somewhere to fill in IP address / hostname, port number, SQL login, etc. Do I need to install a data provider like Ole-something Is the Orcas IDE crippled to never allow connecting to remote databases thru the GUI Is it possible to do so by composing the connection string by hand If so, can someone please point me to a sample Thanks very much. Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - How to change the color of BorderBrush object? Hello, I would like to change the border color and border tickness of a .NET 3.0 button under certain conditions. I don't understand how to modify the Brush object in order to do so. Oh and I don't mean it in xaml but in coding in C# like windows.xaml.cs. Many thanks for hints Kave Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
  - 12
    - Work around - Window AllowsTransparency="True" brings up error for Design view in VS2005 Just been coding with WPF, and I always get this error when trying to look at the Design view when I have AllowsTransparency="True" for the window. I get the Whoops! screen, and more specifically I get an error in the Error List. Error: Property 'AllowsTransparency' was not found or is not serializable for type 'Window' To allow viewing in Design View, I have to get rid of the AllowsTransparency attribute. However, I can compile it and it runs fine with the AllowsTransparency property. And It also renders fine in Expression Blend's Design view. I know this is beta software we're looking at... but is it fixable BTW, Happy New Year from Brisbane, Queensland, Australia :-) Chris Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Adding Event Listeners Hi there, i come from a Flash background, writing Flash apps in AS2 rather than using the Flash IDE. I'm quite familiar with the event model in Flash and was wondering how things work when making WPF apps using Expression Blend. I have a control I'm building that has a StackPanel with textBoxes inside. When i resize my window I want the textBoxes that are not in full view to fade out and disappear. I'm currently doing this incorrectly by using a Trigger event that waits for the OnSizeChanged event on the stackPanel. This unfortunatly means my fade animation runs every time, and not when the x value of a textBox is greater than that of the height of the window. Any clues how I can achieve my effect Cheers, Alex. Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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    - Setting Focus to a TextBox in a FlowDocument I have a FlowDocument... Code Block < Grid > < FlowDocumentReader > < FlowDocument > < BlockUIContainer > < WrapPanel > < Label > > </ Label > < TextBox Name ="m_textBox"/> </ WrapPanel > </ BlockUIContainer > </ FlowDocument > </ FlowDocumentReader > </ Grid > In code, I trap m_textBox.KeyPress [Enter] and do the following: - get textbox value - remove the BlockUIContainer section - insert a paragraph with > and the textbox value - recreate the BlockUIContainer section in code and add it to the end of the FlowDocument - set focus on the textbox control The first time executing the window, the textbox has a flashing cursor and focus. I press enter and the paragraph gets created and the block ui section gets removed and added as expected. But the second and every subsequent time I cannot seem to set focus again. If I click on the window, press TAB, the textbox gets focus, but I can't figure out what I need to do to force the textbox to have focus through code outside of the very first time the window executes. Any ideas David C. Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
  - 15
    - WCF and Reliable messaging and OneWay messages. Hi Guys I am new to WCF and trying to get some understanding of reliable messaging on WCF. I created a simple service which receives a one way method as [ ServiceContract ()] public interface IMyFirstService { [ OperationContract ] string greet ( string myValue); [ OperationContract (IsOneWay= true )] void sendMessage( string msg); } public class MyFirstService : IMyFirstService { public string greet ( string myValue) { return "Hello: " + myValue; } public void sendMessage( string value) { Console .WriteLine( "receive :" + value); } } I set up endpoints for WSHttpBinding and NetTcpBinding with reliable messaging enabled. I generated client proxy and trying to send one way messages in the loop as: SelfHostedService. MyFirstServiceClient client = new SelfHostedService. MyFirstServiceClient ( " NetTcpBinding_IMyFirstService " ); for ( int i = 0; i < 10; i++) { string msg = " msg#" + Convert .ToString(i); Console .WriteLine( "sending.." + msg); client.sendMessage(msg); } Console .ReadLine(); When I break the service, the client blocks after sending 4 messages on TCP binding and blocks after sending 1 message on WSHTTP binding and resumes only when service is continued. Since I am trying to send one way messages from client to server I assume the client should not block. Is this due to some RM buffer issue. How can I increase buffer size to accept more messages on the client side. I tried to look into the documentation and see that reliable message has a MaxTransferWindowSize that can accept upto 32 messages but I am trying to send only 10 messages. I found this situation weird. Has anyone come across this kinda issue. Any insight would be gr8. Thanks Shantanu. Tag: LINQ Project General LinqDataSource Where Parameter Return All Visual Studio 2008
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DrewKBell

I've linked a gridview to my LinqDataSource. All is working fine. I've added a where paramter to the datasource for an ID field. Now what I want to do is set it up to load all records on the initial load. I can put in a parameter and serach fine. I just can't figure out if there is some type of wild card or something special to do for this.

When using a SqlDataSource and stored procedure, I could do either a coalesce or write an if statement in the proc to return all if there is a certain parameter submitted.

- Thanks

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Re: LINQ Project General LinqDataSource Where Parameter Return All

DrewKBell

The answer is pretty straight forward (thanks to Scott and his blog).

http://weblogs.asp.net/scottgu/archive/2007/09/07/linq-to-sql-part-9-using-a-custom-linq-expression-with-the-lt-asp-linqdatasource-gt-control.aspx

You can utilize the selecting event of the linqdatasource. Then search how you want using either a stored proc or linq language. Just rebind the grid when you want to use a search button.

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Re: LINQ Project General LinqDataSource Where Parameter Return All

chenriks

You can also take advantage of the AutoGenerateWhereClause feature. When true, the Where clause will be automatically generated (using "==" and "AND") from all WhereParameters whose values are not null.

For instance, the following will use no Where clause (returning all rows) when the parameter value is null, and will use Where="CategoryID == @p1" when the parameter value is set:

<asp:ControlParameter Name="CategoryID" ControlID="DropDownList1" Type="Int32" />

</WhereParameters>

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