In a Windows Forms application I plan to have a collection of structs - each of which contains a bunch of properties describing a person (e.g., LastName, FirstName, EmployeeID, HomeAddress, ZipCode, etc). So each instance of the struct will describe a person - and about 900 instances (people) ...more >>

Hi, I wanted to find out what is the equivalent operator of ">>>" operator of java in C#. Thanks, K ...more >>

I created xml file using XmlTextWriter. When I opened the xml file using binary editor, the first 3 bytes of the xml file consist of EF, BB, BF respectively. Is there any way I can generate the XML without the mentioned 3 bytes (EF, BB, BF) ? Thanks in advance. ...more >>

Hello, I have a main program which is supposed to loop through a datareader and then spawn a thread each time it goes through the loop. Each thread will be generating a report. Once the thread completed the report it should notify the main progam that it's done. The main program should wait u...more >>

As there is no ReDim in C# , what is the preferred technique for dynmically increasing the size of any array ? Does the answer depend on whether the array holds primitives versus instances of classes ? ...more >>

Wouldn't it make sense if IndexOf just threw a character not found exception instead of -1? If -1 is what you were expecting there should be a function ContainsChar that returns bool. Thoughts? ...more >>

Hi People Could anyone suggest to me the best way to distinguish treenodes? By this I mean I'm in a situation where I have a TreeNode that displays a number of categories and within those nodes there are items of stock. There are a number of things I wish to do, such as use a ContextMenu to...more >>

I want to do something really simple. I have a form and a class which handles my network layer The form has an instance of the network class as a member and initialises the network layer. Inside the network class it then starts dealing with connections and listening (server). When a ...more >>

How to write a Regex that extracts whatever follows the final hyphen in a string ? ...more >>

Hi, I have a string like "bla<cut>blubb<cut>bla<cut>blubb" and want to replace the substring from the first occurrence of <cut> to the second with "TEST" in order to get "blaTESTbla<cut>blubb". So far I only managed to get blaTESTblubb: Regex iRegex = new Regex("<cut>.*<cut>"); return iR...more >>

Hello!! Is it possible to get the number of items in an enum. //Tony ...more >>

When I try to compile the following program on Visual Studio 2005 Pro, the namespace System.Runtime.Remoting.Channels.Tcp is not recongized by the compiler. (The "Tcp" part is highlighted.) And I get the error message: Error 1 The type or namespace name 'Tcp' does not exist in the namespace '...more >>

//create the mail message MailMessage mail =3D new MailMessage(); //set the addresses mail.From =3D new MailAddress("felipe@gmail.com"); mail.To.Add("felipe@gmail.com"); //set the content mail.Subject =3D "This is an e...more >>

I'm starting work on a new and non trivial Windows Forms application. What are some generally accepted recommendations for organizing the project folders and for breaking out different parts of the applicatoin into separate projects (i.e. multi project solution) and/or separate projects com...more >>

What is a good rationalle for creating namespaces? Please understand that I know what they are... I'm just wondering when it would make sense to group my types into multiple namespaces. I see that Visual Studio thinks that placing files into folders means that everything in a folder should be ...more >>

I'm migrating an applicationf from Delphi5 to C# .net Framework 2.0, but have some problems convertingt the Power function, because it is not implemented in the framework Math library. Does anyone have some code lines how to create an own Power function? regards Magnus ...more >>

I've always used Visual SourceSafe for checking in/out source code. We also used it for deliverables (e.g. functional specification document), but should we be using SharePoint for that instead? And what's happening to Visual SourceSafe.. is it going away? I'd like to understand if/how Vi...more >>

For a Hashtable that is expected to contain no more than 100 DictionaryEntry elements , what is the best load factor ? ( This Hashtable is a encapsulted in a class , an instance of which is cached and methods on which are called by n threads ( n is approx = 25 ) ) ...more >>

I need to be able to support multiple versions of c#. Does the compiler define any #defines so you can tell if you are compiling for.NET 1.1 or 2.0? ...more >>

I m trying to port a a Java app to C# and have two questions. i) In Java there is a java.util.Logging package that can be used to log at different levels. Is there an equivalent in C# ? 2) There is a Runtime.getRuntime.availableProcessors() method that returns the number of available proces...more >>

I create a System.IO.Ports.SerialPort object and start communicating with a device (a pocket pc in my case). Everything works perfectly if I don't call "Write" successively. For example the following code: //it doesn't matter if \r\n is used or not, //the problem is the same sp.Write("01...more >>

I want to make my windows form .exe file run on a machine lacking dotnet framework.How can I make a setup project out of it to run on all machines. ...more >>

According to the C# 2.0 draft spec, the following should not compile: class G1<U> { long F1(U u) {return 0;} // Invalid overload, G<int> would have two int F1(int i){return 1;} // members with the same signature } However, it compiles without error or warning for me. This also compil...more >>

Hi all I am getting a really bizzare error on when I convert a string into a datetime: The code is : DateTime dt1 = Convert.ToDateTime("10 Sep 2005"); Console.WriteLine(dt1.Year); I have installed .Net 2.0, on xp Pro SP2. When I do the following I get an error ...more >>

Hi, I was hoping someone could tell me how to declare/create a function so that when I call for it programatically one of the input parameters appears as a drop down list of possible options instead of typing in the value. I believe it has to due with declaring an enumeration but not sure. ...more >>

Hi, I am new to multitier app development. I am working on a windows app that will have business layer and data access layer components. When users log into the client app, it connects to the business layer to get a list of records that it then uses to populate a datagrid. The business la...more >>

Hi, I'm building a class library that uses the serial port to communicate with a custom serial bus. Two of the classes I've built ("Packet" and "SerialPort") uses an aggregated class "Log" to log their activity on a log file. Now that it is working, I'd like to refactor it so it implements...more >>

Hello all, I am trying to develop a Windows Forms application in Visual C#.NET 2005. I have created a FormMainMDI, which has the IsMDIContainer property set to true. I have created a second form, FormClients, which displays information about the clients in the system. This form has the foll...more >>

I'm trying to configure Visual Studio 2005 (C#) to produce a MEX DLL that will interface with MatLab. I found an online source that describes some files that I need to attach to the DLL. The source says: "...Next, you'll be setting properties of the project (right click on the project name ...more >>

I want to display a message to the user that appears to float in front of a window. I could do it with another window but there's no way to make the window itself completely transparent but still see the text. Is there any way to do this? To reiterate - I want to put text up that is over m...more >>

We have a project that contains a number of DLLs. One DLL is a library containing User Interface utilities that are used in most of our forms. As we plan to localize all our strings, we've added a project that contains only string resources. The structure in solution explorer looks like: ...more >>

I create a method that copy files from one folder to another (see the ex. code). A new thread will create every time when user click the button. The button is enable only when the copy process was finished( ThreadState = Stop ) My question is when ThreadState = Stop, the system will release...more >>

I am going to be doing lots of stuff to my window that is currently being displayed to the user. (Moving controls around, hiding some, making some visible, ....) Is there any way I can turn off the refresh while this is going on? I don't want the user to see the stuff moving around. TIA - ...more >>

Hi all! I'm working on an application that due to the nature of the application is heavily concurrent. Usually, there will be between 15 and 20 threads running at the same time. However, at some times it might be necessary to pause execution of these threads. Thread.Suspend() looks like an ex...more >>

I have a generic collection looking like this Set<T> : ICollection<T> { // Create set from existing collection. public Set(ICollection<T> objs) {/* */} // Add objects to set public void AddRange(ICollection<T> objs){ /* */ } } Now, say I want to create a set for a ge...more >>

Dear list, I have a smartphone Forms application built using C#. When I display the Form I would like the 'ok' button which resides at the top right of the screen to be disabled, so the user cant exit the application without setting some value first. Is there any way to disable the 'ok' ...more >>

Suppose you've got a small Win Forms project and on one of the forms, there's a panel. In this panel, you programmatically place maybe 40 controls, which will force the panel to scroll. You set the panel to AutoScroll. Compiling the project seems fine - everything scrolls as it should.....e...more >>

Hi all. I have a c# windows forms app that uses a unmanaged dll. I need to call a function in the dll that registers a callback function. When the dll generates an event it calls my callback function. The problem is that when my callback function is called a LPVARIANT value is returned. Dependin...more >>

I'm keeping both a variable, and its default value in a class: class X { public const string DefaultString = "Default Value"; ... public string VarString = DefaultString; } I'm probably not up on subtleties of how 'const' is treated in C#, cause the code compiles fine, but...more >>

.... the best way to ensure folders path have "\" char at the end of a patch? f.e. c:\program files\ not c:\program files ...more >>

Hi, Is it possible to allow updates in a dataset via a datagrid but no inserts? Can somebody explain how? Thanks in advance, Jo Segers....more >>

Hello, I am trying to reset the content of mainy gridviews when some line is selected. All these gridviews have viewstate enabled Using C# and asp.net, I try changing the datasource to null in the chnaged even and do a DataBind but it has no effect the content seems to stay in the viewst...more >>

hello, i compil my c# program into a DLL. next i install it into my framework directory : c:/windows/Microsoft.NET/myframework.../MyDll.dll but... when i want use it with "unsing MyDll.dll" i obtain this error : CS0246: The type or namespace name 'MyDll' could not be found (are you missing a...more >>

Hello! When I build an exe file that use 6 class library dll I get this error. Could not copy temporary files to the output directory. The file 'MeltPracStorage.dll' cannot be copied to the run directory. Det går inte att komma åt filen eftersom den används av en annan process. All six pr...more >>

If I have a table with say Id (key) and Desc, and a ComboBox box.DataSource = table; box.ValueMember = table.IDColumn.ColumnName; box.DisplayMember = table.DescColumn.ColumnName; and the box has Sorted = true (ie sort on Desc) then when an item is selected, how do I tie the selected item b...more >>

Hi, It comes to my mind last night that since I am using the MSN from time to time. Is it possible to write a small C# program so that the Messenger will respond some word or picture given that I don't respond within some time interval like 10 seconds? Thanks for help. Jason ...more >>

Hi All, I am trying the follow the following MSDN tutorial: Walkthrough: Authoring a Simple Multithreaded Component with Visual C# (ms-help://MS.MSDNQTR.v80.en/MS.MSDN.v80/MS.VisualStudio.v80.en/dv_fxmclicc/html/7bc03b7b-d680-499b-8179-5f414b2d650c.htm) The tutorial says: To create the...more >>