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  - 1
    - How do I test for an object type? I want to test for the type in each cell of my dataset. Object is currently at tempTableRow[tempTableCol]. I have tried if (tempTableRow[tempTableCol].GetType is String) { //do this} I have also tried typeof(tempTableRow[tempTableCol]) but somehow the format is wrong! Maybe it is getting too late. Basically, I have a table whoes rows contain integers, strings and nulls, and I want to do the following test: If table cell is of type string AND string value equals "Y" {do something} Any help would be appreciated. Thanks, Klaus Tag: Visual C# IDE Intellisense Visual C#
  - 2
    - Search a String (Jagged Array) My Declaration string[][] MyJagAry= new string[115][]; MyJagAry [1] = new string [20]; MyJagAry [2] = new string [40]; - - - - - MyJagAry [114] = new string [60]; MyJagAry [1][5] = " Windows Vista Business is designed to help keep PCs running smoothly and securely so you are less reliant on dedicated IT support. " ; MyJagAry [2][10] = " Windows Vista Enterprise is the premium edition of Windows Vista, with all the features in Windows Vista Business plus extra capabilities that can help lower IT costs and improve data protection. " ; - - - - MyJagAry [114][15] = " Windows Vista Ultimate is the most comprehensive edition of Windows Vista. " ; My target: I have a jagged array of string as mentioned as above. My aim is to search the word "Vista", whether it is exists or not. If the word vista found on any of the array element, then I have to display the entire contents of the particular elements on a rich text box respectively. Can anyone help me Regards Ahmed Sahib Tag: Visual C# IDE Intellisense Visual C#
  - 3
    - Maintaining message order from standard output and standard error Hi all, I am trying to write a program that runs another console program as a sub process using the System.Diagnostic.Process. I need to redirect both the standard output and standard error to the main program. Problem I ran into was trying to display the text in the exact same order as they would when output to a console. So assuming my console program is a simple loop like below: for(int i=0; i<10; i++) Console.WriteLine("Standard output:" + i ); for(int i=0; i<10; i++) Console.Error.WriteLine("Standard error:"+i); How do I get the main program to write "Standard output 0"...."Standard output 9" followed by "Standard error 0" ... "Standard error 9" I am using the asynchronous read and write for the console program (i.e. using BeginOutputReadLine and BeginErrorReadLine) and I have hooked up eventhandlers to the ErrorDataReceived and OutputDataReceived events. I tried debugging using breakpoint and it seems the events are not triggered in the correct order. Occasionally I get one ErrorDataReceived event before all OutputDataReceived events have occured. Hope someone can advice on this. Thanks in advance. TanTS Tag: Visual C# IDE Intellisense Visual C#
  - 4
    - Loading a .sys in C# Is it possible to load a system file (Windows .sys) in C# and how I need to be able to call the functions just like calling functions from a DLL file. Any ideas or links Thanks David Tag: Visual C# IDE Intellisense Visual C#
  - 5
    - A question about implementing an object buffer. Currently, I am developing an application which receives operating instructions from a large-frame PLC, processes them and update the database accordingly. Base on our previous system, it's predictable that the database processing speed is slower than the receiving speed of PLC instructions. So, I decided to wrap the raw incoming PLC instructions with a class object and queue them into a buffer before sent to the database processing unit. My initial thought was that using a generic Queue type to enqueue each wrapped PLC instrution object and dequeue them by a forever loop at the other end of the queue. Since, I am new to programming, so I have concerns with the thread safty in this scenario; also I am not intended to use a forever loop in a worker thread. However, I haven't figured out a proper way to complete this. I wonder that anyone of you could kindly explain to me the possibility of this simple buffer implementation or recommend me another method to do it. Thanks to you in advance. Tag: Visual C# IDE Intellisense Visual C#
  - 6
    - Threading and Queue access issues. Tag: Visual C# IDE Intellisense Visual C#
  - 7
    - C# Project Help Thanks for the responses guys... Tag: Visual C# IDE Intellisense Visual C#
  - 8
    - How to dynamically hide properties of class Hi, Now I am working on DAL class design. And I am using Custom Entity object to map the data from database. For example, I have a class name Product, it has some properties: ProductName, ProductId, Weight, Height,Length ,etc.. And I have some Stored Procedures for example: GetProudctInfoById which only returns ProductId and ProductName. the other Stored Procedure would be GetProductDimensionById which will return Weight, height and leght, but It won't return ProductName and other Info. All those two stored procedure will map to Product Entity Class. But the Product Enitity has more properties than the number of columns those two Stored Procedures return. What I want is If Call GetProductDimensionById, the Proudct Class only has Weight, Height,Length properties and hide all other properties. I tried to use attributes to do it, it seems not to work for me. Or dynamically create a class (I won't do that) Any thoughts Please help me out. If you can provider some code snippets, it would be grateful. Thank you. Tag: Visual C# IDE Intellisense Visual C#
  - 9
    - HTTPRequest problem when trying to get ID of <asp:Panel> Hi, I have a simple File Upload form: <asp:Panel ID="pnlUploadForm" runat="server" Height="50px" Width="90%"> Please make sure your CV fits the following guidelines:<br /> <br /> <asp:Label ID="lblGuidelines" runat="server" Text="-- CV Guidelines --"></asp:Label><br /> <asp:HiddenField ID="IsFormPosted" runat="server" Value="True" /> <br /> <asp:FileUpload ID="objFileUpload" runat="server" /> <br /> <br /> <asp:Button ID="cmdUpload" runat="server" Text=" Upload " OnClick="cmdUpload_Click" /> <asp:Button ID="cmdCancel" runat="server" Text=" Cancel " /> </asp:Panel> <asp:Panel ID="pnlUploadStatus" runat="server" Height="50px" Visible="False" Width="90%"> <asp:Label ID="lblStatus" runat="server" Text="Please wait, we are currently processing your application..."></asp:Label> </asp:Panel> I want a bit of basic validation to see if the form has already been submitted > show one panel if not, hide if so. if (HttpRequest["IsFormLoaded"] = true) { pnlUploadStatus.Visible = true; pnlUploadForm.Visible = false; UploadFile(); } else { lblGuidelines.Text = GenerateFileSpec(); pnlUploadStatus.Visible = false; pnlUploadForm.Visible = true; } How do I pass the ID of <asp:HiddenField ID="IsFormPosted" runat="server" Value="True" /> into the HTTPRequest type Thanks, Brett Tag: Visual C# IDE Intellisense Visual C#
  - 10
    - Sertificate Request Creating How can I get Sertificate Request from my code in base64 Tag: Visual C# IDE Intellisense Visual C#
  - 11
    - Casting to interfaces Hi all, What's the point of casting to interfaces, when you can invoke the members directly, like so: Box b = new Box(); b.Extrude(); b.Chamfer(); instead of: IEditable ed = b as IEditable; b.Extrude ( ); b.Chamfer ( ); Since intellisense shows me what I can access, I don't have to worry about using nonexisiting members Thanks, Aw Tag: Visual C# IDE Intellisense Visual C#
  - 12
    - Datarow Array with foreach statement question Hi! newbie here just asking which of the following code is more efficient 1. Code Snippet DataRow[] dataRowArray = dtDataTable.Select("TableColumn = 1"); foreach(DataRow drRow in dataRowArray) { ...some processing here } OR 2. Code Snippet foreach(DataRow drRow in dtDataTable.Select("TableColumn = 1")) { ...some processing here } my problem here is do I need to put the result in a datarow array to make it more efficient or not an issue at all Tag: Visual C# IDE Intellisense Visual C#
  - 13
    - C# equivalent for this complicated C++ struct here's the C++ code Code Block public struct xvid_dec_stats_t { int version; int type; /* [out] output data type */ union { struct { /* type>0 {XVID_TYPE_IVOP,XVID_TYPE_PVOP,XVID_TYPE_BVOP,XVID_TYPE_SVOP} */ int general; /* [out] flags */ int time_base; /* [out] time base */ int time_increment; /* [out] time increment */ /* XXX: external deblocking stuff */ int * qscale; /* [out] pointer to quantizer table */ int qscale_stride; /* [out] quantizer scale stride */ } vop; struct { /* XVID_TYPE_VOL */ int general; /* [out] flags */ int width; /* [out] width */ int height; /* [out] height */ int par; /* [out] pixel aspect ratio (refer to XVID_PAR_xxx above) */ int par_width; /* [out] aspect ratio width [1..255] */ int par_height; /* [out] aspect ratio height [1..255] */ } vol; } data; } Anyone pls help me create the C# signature for the C++ struct above. This is the first time i saw a struct within a struct, then using "union". Its pretty complicated for me. Many thanks!! regards, gudguy Tag: Visual C# IDE Intellisense Visual C#
  - 14
    - Recreate dataset, without loosing custom queries? I created an application and added a dataset from a MSSQL database using the wizard. I also added some custom queries to the tables. Now theres two reasons why i want this dataset to be recreated: 1) The dataset designer stopped working, whining something about query string - i did modify the settings file, but i'm fairly sure i changed the query string back to the exact same as before, but it's still isn't working. My application works fine and have no problem accessing the database so i don't understand why the IDE can't. 2) I have done some changes to the MSSQL database (added some table fields). I want all changes to be reflected in the Dataset i have in visual studio. So i assume the easiest would be to just delete and readd the dataset with using same name. But the problem is that i want all my custom queries Are there any simple way of just "recreating/refreshing" the dataset Tag: Visual C# IDE Intellisense Visual C#
  - 15
    - Determining if wave playback device is in use Hi There, First off, I apologise if this is the wrong place to post this - I couldn't find a forum related to audio except for Vista (and I'm trying to do this under XP). Though I am programming in c#. Is there a way to determine if a given wave output device in the system is currently playing audio I've spent a day wading through documentation for various APIs and I can't find any way of doing this. But it seems like an obvious thing to want to do - all I want to do is determine if the device is active (i.e. currently playing a sound) - I don't otherwise want to interfere with it. I appreciate any suggestions. I'm totally stuck on this one! Thanks. Luke Tag: Visual C# IDE Intellisense Visual C#
  - 16
    - Multiple exe files in a single project. In VS.NET 2005 how do I set it up so that each of my classes would create a different executable file I want to do this so that I can use one common settings file throughout all of the classes, but they can be executed seperately. ie. Class1 = class1.exe - Would insert new records into the database when clicked. Class2 = class2.exe - Check all records in the database to see if they would match any saved queries. Class3 = class3.exe - Purge old records from the database. Thanks in advance for any help, Russ Tag: Visual C# IDE Intellisense Visual C#
- Next
  - 1
    - Enterprise Library, Is it possible to mix Caching Application Block 2.0 and 1.1 in a single .NET 2.0 application? I have a .NET 2.0 C# application (.exe) which references two class libraries LibOne.dll is NET 2.0 code which uses Enterprise Library Caching Application Block 2.0 LibTwo.dll is.NET 1.1 code which uses Enterprise Library Caching Application Block 1.1 (this .NET 1.1 code has too many other dependency, and cannot migrate to .NET 2.0 at this time) These two class libraries cache different things without overlap. My questions are: Is it possible Any potential problems it may cause I was told that if I put Enterprise Library Caching Application Block 2.0 in GAC, and Enterprise Library Caching Application Block 1.1 in my application��s runtime folder, it should work with application configuration like following ...... <configSections> <section name="cachingConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Caching.Configuration.CacheManagerSettings,Microsoft.Practices.EnterpriseLibrary.Caching, Version=2.0.0.0, Culture=neutral, PublicKeyToken=af1e670cc00fe088"> <section name="loggingConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.LoggingSettings, Microsoft.Practices.EnterpriseLibrary.Logging, Version=2.0.0.0, Culture=neutral, PublicKeyToken=af1e670cc00fe088"> <section name="enterpriselibrary.configurationSettings" type="System.Configuration.IgnoreSectionHandler, System, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> </section> </configSections> ...... Any comments and feedback are truly appreciated. Tag: Visual C# IDE Intellisense Visual C#
  - 2
    - DLL error at startup when using old DLL Hello all, for one my project I have to use old-fashioned DLL. I don't know why but my C# code does not work: class Program { #region Dll Imports [DllImport("FuncModuleCpp.dll", EntryPoint = "fnFuncModule_GetVersion", CharSet = CharSet.Auto)] static extern Boolean fnFuncModule_GetVersion( StringBuilder sVersionOut, StringBuilder sErrorOut); #endregion static void Main(string[] args) { StringBuilder stri1 = new StringBuilder(128); StringBuilder stri2 = new StringBuilder(128); Boolean resFuncModule = fnFuncModule_GetVersion(stri1, stri2); if (resFuncModule) { Console.WriteLine("Result OK"); } else { Console.WriteLine("Result error"); } string FuncModuleString = stri1.ToString() + "; err: " + stri2.ToString(); Console.WriteLine(FuncModuleString); } } I always get "fnFuncModule_GetVersion(): Error at Startup!" message. In C code everything goes well: #include "FuncModuleCpp.h" int _tmain(int argc, _TCHAR* argv[]) { _TCHAR m_sVersion [kLEN_MAX_STRING + 1]; _TCHAR m_sError [kLEN_MAX_STRING + 1]; if (!fnFuncModule_GetVersion(m_sVersion, m_sError)) // error at service GetVersion { // show error _tprintf(_TEXT("\n")); _tprintf(_TEXT("########## %s\n"), m_sError); } else { _tprintf(_TEXT("\n")); _tprintf(_TEXT("Version of FuncModule = %s\n"), m_sVersion); _tprintf(_TEXT("\n")); } return 0; } If I have a look into the exports, I see following: C:\Program Files\Microsoft Visual Studio 8\vc\bin>dumpbin/exports d:\FuncModuleCpp.dll Microsoft (R) COFF/PE Dumper Version 8.00.50727.762 Copyright (C) Microsoft Corporation. All rights reserved. Dump of file d:\FuncModuleCpp.dll File Type: DLL Section contains the following exports for FuncModuleCpp.dll 00000000 characteristics 441AA65E time date stamp Fri Mar 17 13:06:54 2006 0.00 version 1 ordinal base 9 number of functions 9 number of names ordinal hint RVA name 1 0 00001710 fnFuncModule_AllocDevice 2 1 00001110 fnFuncModule_GetInfoAllDevices 3 2 000023F0 fnFuncModule_GetInfoCapture 4 3 000013F0 fnFuncModule_GetInfoDevice 5 4 00002730 fnFuncModule_GetVersion 6 5 00001A60 fnFuncModule_ReleaseDevice 7 6 00001D70 fnFuncModule_StartCapture 8 7 000020F0 fnFuncModule_StopCapture 9 8 000029D0 fnFuncModule_Test2 Summary 3000 .data 2000 .rdata 2000 .reloc 1000 .rsrc A000 .text But if I dump other DLLs, I see some addresses as well - for example: C:\Program Files\Microsoft Visual Studio 8\vc\bin>dumpbin/exports d:\ClassicC_DLL.dll Microsoft (R) COFF/PE Dumper Version 8.00.50727.762 Copyright (C) Microsoft Corporation. All rights reserved. Dump of file d:\ClassicC_DLL.dll File Type: DLL Section contains the following exports for ClassicC_DLL.dll 00000000 characteristics 47205FF1 time date stamp Thu Oct 25 11:20:49 2007 0.00 version 1 ordinal base 2 number of functions 2 number of names ordinal hint RVA name 1 0 000110F0 ExportedFunction = @ILT+235(_ExportedFunction) 2 1 0001117C ExportedSum = @ILT+375(_ExportedSum) What should I do to get the first DLL to work Maybe this is not the right forum s please can you point me somewhere else as well Thank you in advance, Vaclav Tag: Visual C# IDE Intellisense Visual C#
  - 3
    - Static Extension Methods Hi all, I think the new extension methods are extremely powerful and elegant IMO. I know there are also lots of people arguing about it. What I wonder is, will there be any plans to allow programmers to extend static methods It might look like this is unacceptable, but it would have the same cons and pros as instance extension methods, so I think that would be a very useful addition. IMO this would eliminate having random function libraries for generic tasks. But I am not saying putting all kinds of specific, generic methods into extensions. Just the generic ones. Obviously this could be abused, but same thing can happen with instance extension methods. Thanks alot, Aw Tag: Visual C# IDE Intellisense Visual C#
  - 4
    - why is this statement not working? What I am trying to do in this code is if the user clicks the checkbox (default is to be unchecked), then it will stay checked when the user goes back to this window. My code is below: private void frmPreferences_Load(object sender, EventArgs e) { // Attempt to open the key RegistryKey key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\\Franklin's Stock Project\\Preferences"); // If the return value is null, the key doesn't exist if (key == null) { chkAutoStart.Checked = false; } else { key = Registry.LocalMachine.CreateSubKey(@"SOFTWARE\\Franklin's Stock Project\\Preferences"); key.SetValue("AutoStart", chkAutoStart.Checked); chkAutoStart.Checked = Convert.ToBoolean(key.GetValue("AutoStart").ToString()); chkAutoStart.Checked = true; } } Tag: Visual C# IDE Intellisense Visual C#
  - 5
    - Tab Controls Can someone let me know how i can add a TAB CONTROL to an existing windows form application Tag: Visual C# IDE Intellisense Visual C#
  - 6
    - Extract an icon Hi, how can I extract an icon from a file (C#) For example: if I'll choose the EXE file which runs the "MS Office Word", I'll get the icon with the blue "W". Thanks, Idan. Tag: Visual C# IDE Intellisense Visual C#
  - 7
    - Why is this not valid!!!??? I have a question that nobody in my department is able to answer. It came to me while using the Class Designer to stub out our data access layer of our application. The question is: If I create an abstract worker class as such: public abstract class MyClass { public abstract void MyMethod( DataEntityAbstract Entity); } Then try the following in its derived class: public class ThisClass : MyClass { // ThieDataEntity is derived from DataEntityAbstract class public override void MyMethod( ThisDataEntity Entity) { // Do Something } } Visual Studio 2005 will throw a compilation error. Why I mean, polymorphism and inheritance allows us to declare a method using an abstract as a parameter. This allows the method to accept not only the abstract parameter which was declared, but any object derived from that abstract. It��s the cornerstone of OOP. So why can we not use these principles when declaring an abstract method I��m sure you��re probably asking yourself ��Why would you need to �� Maybe this will answer: I need to create an abstract worker class, having helper methods as well as abstract methods. These abstract methods will expect a specific entity to be passed when they are called on the derived class, however the abstract class does not have foreknowledge as to WHICH specific entity will be required. Only that it will be derived from a known abstract class: public abstract void ProcessData( EntityBase Entity); It will be the responsibility of the derived class to specify WHICH specific entity: public override void ProcessData( SQLEntity Entity) { //Do Something } The method on the derived worker class will only accept the SQLEntity, and will not allow use of any other entity which is derived from EntityBase (i.e. OracleEntity, AccessEntity, etc). The constraint exists because the derived worker class is to be used for SQL Server only, and thus only wants the SQLEntity entity! Granted, I could always check the type and do a cast (or throw an exception), but why The principles of OOP should allow this.. right DotNetTex Tag: Visual C# IDE Intellisense Visual C#
  - 8
    - an array of inherited classes I have a question about how to create an array of a number of different inherited classes from the same base class. Let's say I have the following classes: //base class Class A { public void foo { } } //inherited classes Class B : A { public void bar { } } Class C : A { public void foo { } } Now I want to create an array which contains elements that can be either B or C. However, when I call the function foo(), I want it to call the C::foo() when it is a C element, and A::foo() when it is a B element. I tried instantiating it in the following way: Class D { public D { m_X = new A[5]; } public A [] m_X; } But now I have an array of A elements that do not have memory allocated for being B or C, so I can't treat an element of m_X as a B or C. Furthermore I have to instantiate an element of m_X as a C element in order for the C::foo() to be called when I call m_X.foo(). I have the feeling I'm overlooking something very simple, but I can't find what. Could anyone help me with this Tag: Visual C# IDE Intellisense Visual C#
  - 9
    - new keyword in property declaration Hi all, I was just browsing msdn to get to know .net (especially c#) a little bit better, when I came accross a code construction I had never seen: new private string Id { get { return id; } set { id = value; } } I usually declare properties without the "new" keyword. I didn't find any explanation so I'd hoped maybe someone here can help me a bit further Always interested in learning .net . Thanks in advance. Sacha. Tag: Visual C# IDE Intellisense Visual C#
  - 10
    - Enumerating objects by type To start off, I would like to make a request to the C# language folks: Can we please have a where clause in the foreach statement Examples: foreach (Ship ship in Objects where ship is Ship) ... foreach (Ship ship in Ships where ship.IsVisible) ... foreach (Ship ship in DockedShips where ship.QueueIndex < queueThreshold) ... I've heard about Linq, but have not yet had the chance to check it out. I would be interested to know where it would benchmark in the code here (below). The code below creates a Sector object which contains a list of GameObjects. Ship and Station derive from GameObject. It addes 50,000,000 objects to the list, randomly created as a Ship or a Station. It then runs four tests: T1 Enumerates the Ship objects by enumerating the Object list directly, testing for Ship type, and casting. T2 Enumerates the Ship objects through the ShipEnumerable class. T3 Enumerates the Ship objects through the use of a yield iterator. T4 Enumerates the Ship objects through the TypedEnumerable class which is a generic version of the ShipEnumerable class. The tests are each timed and the results displayed. These are the results I get: T1 baseline T2 baseline * 1.52 T3 baseline * 1.70 T4 baseline * 2.14 I would like to have my Sector class provide enumerators for various types of objects as I have done here in the code below (there are more then just Ships and Stations). I need to keep them in a single container as an object can implement many interfaces (Ship, Dockable, Commodity, Mountable, etc.). That is to say, there are no separate lists that make sense unless I maintain a whole bunch of lists, in which case an object would appear in multiple lists. Is there another way to return an enumerator that fetches only a specific type of object without suffering the added processing cost That is, can I provide an enumerator without the test and cast, but get the performance results of the test and cast The source code should clear up any confusion about what my question is: Source Code using System; using System.Collections; using System.Collections.Generic; using System.Windows.Forms; static class Program { [STAThread] static void Main() { Random rand = new Random(); Sector sector = new Sector(); for (int n = 0; n < 50000000; n++) { if (rand.NextDouble() > 0.5) sector.Objects.Add(new Ship()); else sector.Objects.Add(new Station()); } QueryPerfCounter qpf = new QueryPerfCounter(); // T1 qpf.Start(); foreach (GameObject obj in sector.Objects) { if (obj is Ship) Test(((Ship)obj).Engine); } qpf.Stop(); double t1 = qpf.DurationMilliSeconds; double baseline = t1; // T2 qpf.Start(); foreach (Ship ship in sector.ShipsCustom) { Test(ship.Engine); } qpf.Stop(); double t2 = qpf.DurationMilliSeconds; string t2per = (t2 / baseline).ToString("F4"); // T3 qpf.Start(); foreach (Ship ship in sector.ShipsYield) { Test(ship.Engine); } qpf.Stop(); double t3 = qpf.DurationMilliSeconds; string t3per = (t3 / baseline).ToString("F4"); // T4 qpf.Start(); foreach (Ship ship in sector.ShipsGenericCustom) { Test(ship.Engine); } qpf.Stop(); double t4 = qpf.DurationMilliSeconds; string t4per = (t4 / baseline).ToString("F4"); Console.WriteLine(string.Format("T1 = {0}ms, T2 = {1}ms ({2}), T3 = {3}ms ({4}), T4 = {5}ms ({6})", t1, t2, t2per, t3, t3per, t4, t4per)); } static void Test(string s) { } } public class Sector { List<GameObject> objects = new List<GameObject>(); public List<GameObject> Objects { get { return objects; } } public IEnumerable<Ship> ShipsYield { get { foreach (GameObject obj in objects) if (obj is Ship) yield return (Ship)obj; } } public IEnumerable<Ship> ShipsCustom { get { return new ShipEnumerable(objects); } } public IEnumerable<Ship> ShipsGenericCustom { get { return new TypedEnumerable<Ship>(objects); } } } public class ShipEnumerable : IEnumerable<Ship>, IEnumerator<Ship> { IEnumerator list; public ShipEnumerable(IEnumerable list) { this.list = list.GetEnumerator(); } public IEnumerator<Ship> GetEnumerator() { return this; } IEnumerator IEnumerable.GetEnumerator() { return this; } public void Dispose() { } public bool MoveNext() { bool retval = list.MoveNext(); while (retval && !(list.Current is Ship)) retval = list.MoveNext(); return retval; } public void Reset() { list.Reset(); } public Ship Current { get { return (Ship)list.Current; } } object IEnumerator.Current { get { return Current; } } } public class TypedEnumerable<T> : IEnumerable<T>, IEnumerator<T> { IEnumerator list; public TypedEnumerable(IEnumerable list) { this.list = list.GetEnumerator(); } public IEnumerator<T> GetEnumerator() { return this; } IEnumerator IEnumerable.GetEnumerator() { return this; } public void Dispose() { } public bool MoveNext() { bool retval = list.MoveNext(); while (retval && !(list.Current is T)) retval = list.MoveNext(); return retval; } public void Reset() { list.Reset(); } public T Current { get { return (T)list.Current; } } object IEnumerator.Current { get { return Current; } } } public class GameObject { } public class Station : GameObject { public string Dock { get { return "dock"; } } } public class Ship : GameObject { public string Engine { get { return "engine"; } } } QueryPerfCounter is a wrapper for the API using System; using System.ComponentModel; using System.Runtime.InteropServices; public class QueryPerfCounter { [DllImport("KERNEL32")] private static extern bool QueryPerformanceCounter(out long lpPerformanceCount); [DllImport("Kernel32.dll")] private static extern bool QueryPerformanceFrequency(out long lpFrequency); private long start; private long stop; private long frequency; Decimal multiplier = new Decimal(1.0e9); public QueryPerfCounter() { if (QueryPerformanceFrequency(out frequency) == false) { // Frequency not supported throw new Win32Exception(); } } public void Start() { QueryPerformanceCounter(out start); } public void Stop() { QueryPerformanceCounter(out stop); } public double AvgDuration(int iterations) { return ((((double)(stop - start) * (double)multiplier) / (double)frequency) / iterations); } public double DurationNanoSeconds { get { return (((double)(stop - start) * (double)multiplier) / (double)frequency); } } public double DurationMicroSeconds { get { return (((double)(stop - start) * (double)multiplier) / (double)frequency) / 1000; } } public double DurationMilliSeconds { get { return (((double)(stop - start) * (double)multiplier) / (double)frequency) / 1000000; } } public double DurationSeconds { get { return (((double)(stop - start) * (double)multiplier) / (double)frequency) / 1000000000; } } } Tag: Visual C# IDE Intellisense Visual C#
  - 11
    - How do I add FormClosing event? I don't have a File --> Exit menu or anything, just the 'x' in the top right corner. When I try to manually add a FormClosing event, it gets removed whenever I modify the GUI. Where can I add it so that it won't go away Tag: Visual C# IDE Intellisense Visual C#
  - 12
    - How can i handle Exception If error occured in Thread? Hello, I don't know how can i handle if any error occured in my open thread. And i also used delegate method in my thread. I already tried Application.ThreadException And AppDomain.CurrentDomain.UnhandledException but there is no luck. Tag: Visual C# IDE Intellisense Visual C#
  - 13
    - ConsoleApplication2.exe' does not contain a static 'Main' method suitable for an entry point I have two class Code Block class TestUrl { public static void Main() { string strOut; CSDownloadURL web = new CSDownloadURL(); web.setURL1( "http://www.google.com" ); web.DownloadURL( out strOut); Console.WriteLine(strOut); } } Code Block namespace Project5 { using System; using System.Text; using System.IO; using System.Net; /// <summary> /// Summary description for Class1. /// </summary> public class CSDownloadURL { private string m_strURL; public void setURL1( string strURL ) { m_strURL = strURL; } public void DownloadURL(out string strContents) { WebRequest req = WebRequest.Create(m_strURL); WebResponse res = req.GetResponse(); int iTotalBuff = 0; Byte[] Buffer = new Byte[128]; Stream stream = res.GetResponseStream(); iTotalBuff = stream.Read(Buffer, 0, 128); StringBuilder strRes = new StringBuilder(""); while(iTotalBuff != 0) { strRes.Append(Encoding.ASCII.GetString(Buffer, 0, iTotalBuff)); iTotalBuff = stream.Read(Buffer, 0, 128); } strContents = strRes.ToString(); } } why Thanks Tag: Visual C# IDE Intellisense Visual C#
  - 14
    - Obivous oversite? This problem has to do with updating a control/dataset based on the DataRecevied event of the serial port. Now I know you are thinking cross threading (which it might be) but let me explain. I have a dataset in the main UI form that is databound to a number of controls. When I change the values of the dataset the bound controls update. This is fine, but when I update the values of the dataset via the DataReceived event the values DON'T update To illlustrate the problem simply I have stripped down the code to it's most basic form. I hope someone can shed some light on the problem. public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { // create a dataset and populate it with data UnitDataSet uds = new UnitDataSet(); uds.DIns.ReadXml("Data.xml"); // create a new comms instance and pass a ref to the dataset _comms = new Comms(uds); // create a label to bind too Label lblInputState = new Label(); panel1.Controls.Add(lblInputState); // databind the control to the state column lblInputState.DataBindings.Add("Text", uds.Tables["DIns"], "state"); } // used to test if the binding works and value changes as expected public void button1_Click(object sender, EventArgs e) { _comms.ChangeValue(); } } ============================================================ class Comms { SerialPort _sp; UnitDataSet _uds; public Comms(UnitDataSet uds) { _uds = uds; _sp = new SerialPort("COM7", 9600, Parity.None, 8, StopBits.One); _sp.DataReceived += new SerialDataReceivedEventHandler(_sp_DataReceived); _sp.Open(); } private void _sp_DataReceived(object sender, SerialDataReceivedEventArgs e) { // run this method when the event fires ChangeValue(); } // if i call this from the main form button (see above ) the value changes but if it's called // by the above DataReceived event the value doesn't change! ! public void ChangeValue() { // simple toggle to change the value bool tmp = (bool)_uds.Tables["DIns"].Rows[0]["state"]; _uds.Tables["DIns"].Rows[0]["state"] = !tmp; } } Tag: Visual C# IDE Intellisense Visual C#
  - 15
    - can I write xml file in window service Hi all, I am writing a window service to watch a folder. When there is a new file created , I will take the information and write an xml file to another folder. But when I run the window service, the following error is shown EventType clr20r3, P1 directorywatcher.exe, P2 1.0.0.0, P3 472a843d, P4 mscorlib, P5 2.0.0.0, P6 461eee3d, P7 2c63, P8 2e, P9 system.notsupportedexception, P10 NIL. Does it mean that I cannot write xml file in window service If yes, may I know what is the best way Please help. Thanks Tag: Visual C# IDE Intellisense Visual C#
  - 16
    - return statements I just learned about returned statements. When you have value-returning pgrogrammer defined functions I know that you can return a method like this: return intNum1 * intNum2; But what if you need to define a variable and store a calculation in that variable How would you return to that method For example: decimal CalcGross( double dblHours, decimal decRate, int intHOUR_LIMIT) { //declare variables decimal decGross = 0; if (dblHours <= intHOUR_LIMIT) { //CALCULATE regular wages decGross = ( decimal ) dblHours * decRate; } else { //CALCULATE regular wages and then CALCULATE overtime decGross = intHOUR_LIMIT * decRate; decGross += ( decimal )(dblHours - intHOUR_LIMIT) * (1.5M * decRate); This is my method - CalcGross. What is the line of code I need to return my method Thanks for the help. I tried return CalcGross; which obviosuly doesn't work. Thanks Tag: Visual C# IDE Intellisense Visual C#

atarikg

Hi,

On developin,i need to write some javascript code using .js file . But on coding in this type of file ,i am talking about javascript include files, there is no intellinsense appears and i need to see. How to show or active intellisense for this type of files in Visual Studio 2005 and i've installed service pack 1 for visual studio and the last thing is i am using Windows Vista Ultimate Edition.I need ur helps.

Thanks in advance.

(In Visual Studio Orcas it is enabled to show Intellisense in .js Include Files. But it is still beta 2 version. and i am waitin a stable edition to buy and use.so it may be far away to use it for now.It means i am expecting from u people to be suggested someway else to solve this problem )

Have a nice day.

Re: Visual C# IDE Intellisense

Chris Brandsma

If you really need intellesence for Javascript, you'll have to download Visual Studio.Net 2008 Beta 2.

There is no Javascript intellesence in Visual Studio 2003 or 2005.

I understand you are trying to sell the program your working on. The key is to create two projects and solutions. One for 2005 and the other for 2008. All of the other files stay the same.

There are other advantages to doing this, the other is the ability to debug Javascript (set breakpoints, check values, etc).

It is a pain, but if you are doing a significant amount of Javascript it is well worth the effort.

Re: Visual C# IDE Intellisense

atarikg

Well are u sure there is no service pack or something else microsoft has published to activate intellisense for JavaScript in Visual Studio yeah i know the files gonna be same whether i am using Vs2005 or 2008 but i encountered some unexpected errors on working with VS2008 and i take it ok due to fact that it is Beta 2.

Re: Visual C# IDE Intellisense

Chris Brandsma

I dont know of any service packs that do that for 2005.

But, I have been working with both 2005 and 2008 (beta 2) on my main work machine for several weeks now without any problems -- as have 2 other people in my office. I wouldn't have done it but I really wanted to try the javascript support, and that is amazing.

Re: Visual C# IDE Intellisense

atarikg

Well then i am downloading Visual Web Developer Express Edition 2008. At least it doesnt contain stuffs i dont need.
thanks and have a nice day.