I have to create a control panel applet for my project using C# . But i got to know that it is not possible using C# since dll has to export static entry points. And one of the ways is using MC++ to write a wrapper for the C# component. as we know that .NET languages all are based on a commo...more >>

I have the following situation: Process 1 creates Process 2 (using Process.Start(startInfo) Process 1 needs to wait until Process 2 is initialized before Process 1 can continue to execute Both processes are non-GUI processes. The problem that I am running into is that the Process.Start(start...more >>

I would like to have a panel control which has the ability to have different color borders, any idea how to accomplish this. Thanks ...more >>

Hi all, Could I use an external dll (that windows also use for it's themes) from which my application could load it's graphics at runtime? Basically I wan't to be able to select the styles for my application without changing the windows general appearance. Thanks, Peter. ...more >>

Here is an xml structure. i want to remove <a> nodes that do not have any child. How can i do that in csharp? <root> <a> <b/> </a> <a/> <a/> <a> <c/> </a> </root> i tried following but it does not work: xmlNodeList l = xr.getElementsB...more >>

Hi, I produce a text file using my windows application written with c#. -- System.Text.Encoding encOutput=null; encOutput=System.Text.Encoding.UTF8; StreamWriter sw=new StreamWriter(@"c:\a.txt",false, encOutput); -- this UTF-8 file will be used to transfer data to another databa...more >>

Hi I cannot figure why it isn't possible to cast a struct array to an object array. I written a structure like this: public struct Test { private int TestA; private int TestB; public int A { get {return this.TestA;} } public int B { get {return this.T...more >>

I have a DataTable in a DataGrid on a Windows form. I have comboboxes in the first column, and that seems to work just fine. The second column is for a money amount. The numeric dollar value doesn't get saved to the cell until I hit <Enter> or tab to the next cell. I'd really like to be ab...more >>

would greatly appreciate any advice on approaching this problem. i have a browser-like winform app with 4-5 forms, allowing foward and back navigation. the app will also allow for opening a new copy of any particular form and navigation from that form foward independent of the orignal form...more >>

Suppose I have a few Keys objects: Keys k1 = Keys.V; // V Keys k2 = Keys.Control | Keys.V; // Ctrl+V Keys k3 = Keys.Shift | Keys.J; // Shift+J I need to determine which of these include the Keys.V element, regardless of any other keys. I know it will be a bitwise comparison, but I can't wo...more >>

How can I use real SQL on a DataTable? i.e. not array of rows using a filter... as in DataTable.Select. I read at : microsoft.public.dotnet.framework.adonet "As others have posted: There is no SQL query processor for DataSets. You can use XPath with an XMLDataDocument built from the DataSet....more >>

I'm trying to convert system.string[] to a com method that wants a BSTR*, and array of BSTR. Can anyone help?...more >>

Can anyone please explain to me the process of form localisation? Are there any tools that will extract all strings from all forms in a project (so they can be sent for translation) and then import them into the project again (with the appropriate Locale setting on the form). I have string li...more >>

Hi everybody: I want to import the private key of my 1st certificate contained in my Certification store. I create the certificate with the private key exportable, but if I run the code below, I obtain "Export of private parameters is not supported" static void Main(string[] args) { ...more >>

Hi, this code does not compile in C#: class base_class {} class derived_class : base_class {} class A { public virtual base_class f() { return new base_class(); } } class B : A { public override derived_class f() // covariant return type { return new derived_class(); ...more >>

Hi, My application has 3 windows, each of them is separate form. One of them (called MainWindow) is visible in task bar, others are not. I'd like them to behave in the following: 1) when main window gets focus (or is "restored"), others should be brought to the front 2) when main window...more >>

Hi, I was trying to link a UI I made in C# to the backend which is coded as a DLL in VC++. I used the DllImport attribute to invoke the dll functions. Is there any similar mechanisms by which I can invoke member functions of classes defined in the dll? Is there any way I could instantiat...more >>

I need to know if the "X" in the upper right-hand corner of the form was pressed to close a form. Nothing else, just the "X" close button ...more >>

Hello, I write application which displays 3 windows at the startup. Is there any way (apart from hardcoding their location), to display them tiled (so that they do not overlap)? Thx Piotrek Stachowicz ...more >>

What event is fired when the user clicks on the "X" in the upper right-hand corner. I need to know how to differntiate between this and a close button I placed on the form. ...more >>

Hi, i am getting only vb.net code samples when parsing the mdsn library can someone tell me how to set with what language code samples are displayed ? Thanks & regards, Sven ...more >>

When I'm adding a reference to another project that is built as one of the Projects in the Solution, should I add the dll in Debug or the one in Release? I usually also do a batch build of everything (Release and Debug) so I don't know if that would be a factor. The reason I'm asking is that one...more >>

Hi I can use the TableRow and TableCell class in C# while using Web forms. The same are not available while programming with Windows Forms. I have the folloowing code that works fine with Web forms but returns error with Windows Forms. How can I make it run for Windows forms: TableRow r; Ta...more >>

Hello gurus, I'm building a small booking system and i have come accross quiet a tedious pitfall. "I need to make sure that people do not book for tomorrow when todays time is greater or equal to 11." Well some of you probably allready know the answer but this is not so obvious for ...more >>

public class A { public A () { // here I would like to call the second version of _ctor, how to accomplish this ? } public A (int a, int b, int c) { // some code } } Thanks for any advice, Paul ...more >>

Hi everyone, I'm using the System.Drawing.Imaging.Bitmap to retrieve and modify the metadata tags (user comments, keywords etc) of JPEGS. I was wondering if changing these tags in any way degrades the image quality of the JPEG. I am using SetPropertyItem to change the tag value and then call...more >>

Alright, so I've got a class library that others will be using. When you hover the mouse over most of the exiting .NET classes/methods, you will get a tooltip popup showing the full name/declaration of the class or method, along with a line of text description. I am attempting to add similar d...more >>

I get the following error when I run the XML Schema Definition Tool on a XML schema: Error: Error generating classes for schema 'codeGeoFeatureType'. - Specified cast is not valid. The XSD in question is: <?xml version="1.0" encoding="UTF-8"?> <xsd:schema xmlns:xsd="http://www.w3.org/...more >>

I have the following for an update function and I want to be able to pass in a session variable where it is within the update statement. Does anyone know how you can pass this session variable in here? As it is currently, it says that it does not exist in the class or namspace. I have been abl...more >>

Hi, How can I display to the user the "Connection String Dialog" (The = Dialog to build connection string) in my application ? =20 Thanks, Steph....more >>

I posted early about Hashtable use and the shallow/deep copy and storing a reference answered that question. I've got a larger implementation of this, but am not sure why I'm getting this error. Object reference not set to an instance of an object. I don't know what I'm missing. What needs t...more >>

Little question: I have a class A { public A() { //Whatever } public SomeStruct prop { get {return m_prop;} set {m_prop = value;} } } And structure SomeStruct { public string s1,s2; public SomeStruct(...more >>

Hi, I am trying to convert an integer into a string but when i do i loose some of the integer... e.g int i = 10.00 ; string s ; s = Convert.ToString(i) ; s = "10" not "10.00" how do i get the string to look like this "10.00"?? Thanks ...more >>

Hey, I have come into a bit of a problem. When Flatsyle is on system it will not show my images that i have set in image list or just in image. Also somethings i have found online do not work because i coded it to change the flatstyles(if needed) to whatever theme the user is using. This is th...more >>

Hi, I have a win C# app and I would like to write some scripts (VB/JScript) for instance in a textbox component and to validate the syntax of that script (not neccesserly to run it...) How can I do that ??? ...more >>

Hi, My application should have a audio recording control, which will record the audio input from a user, save the audio input as a Base64string and play it back. What objects should I be using ? Is there any sample application similar to my requirement ? Meena ...more >>

Anyone knows if there is any method similar to the C++ sscanf in C#? (parse a string that contains several values) -- Regards, Hin ...more >>

Hi, ListView doesn't seem to have the FindItem function anymore. What are you using instead of that method (other than foreach in the ListView.Items)? Thanks! PL ...more >>

Hi NG, I want to build two classes, Demo.Car (where Demo is the Namespace) and Demo.Car.Wheel Is the only solution a nested Class? Isn`t there anything more elegant? Thank you Rudi ...more >>

Hi there, I'm just starting to write my second ASP.NET webpage in C# and want some way of easily splitting out those files that are needed to be uploaded to the webserver - i.e. i create a project on my local machine in VS.NET and it creates the "AssemblyInfo.cs" file, "Global.asax" file, "Gl...more >>

Hello, how can i wait thread to close in C# - i need something like the Win32 API WaitForSingleObject. Thread t; // Start t // Somewhere else... // Order t to close // ... // Wait t to close 250 msec UnknownFunctionName( t, 250 ); // Thread was closed or time ended thx Ki...more >>

Please help me! How to show image in textbox ? Thanks ...more >>

Hello, I am trying to find the file location and file names of all the processes that I see in windows task manager. How can I list all the exes that are running currently? Thanks in advance, Alwin S....more >>

Just a brief note to say that I'm moving tomorrow and taking some time off work to sort the new house out. Unfortunately I won't have internet access at the new house for a short while, so I won't be able to read news. If any conversations I'm involved in seem to stop half way through, th...more >>

I'm wanting to use a Hashtable. I have 2 (keys, objectvalues) pairs of data to store. I'm using a static declartion for the Hashtable the instance of the class that is the object. If I try and retreive the first object after storing after the 2 (key, objectvalues) are stored I always get the ...more >>

Hi, How can I obtain the full path for a running process without using WMI? I've tried to use the Process.StartInfo.WorkingDirectory but it's not valid since the process is already running. Thanks, ...more >>

Hi there. Having a problem calling a win32 function from a dll. Here is the function header: DWORD thrdGetHcNum (DWORD nPort, DWORD nBaudrate, LPTSTR lpszHcNum) //Description of the 3rd parameter LpszHcNum: The head of the buffer area used to store the serial number of the terminal, 9 by...more >>

Hi , i am fairly new to c# and programming and here is my question! i have a dataset to store information in a windows form project. At the moment it is made and loaded in the MainForm method. Now i want to add a record via a button click event. How do i access the dataset in the click ...more >>

..NET Framework 1.1 Service Pack 1 -Tech Preview- http://www.microsoft.com/downloads/details.aspx?familyid=12721880-cb9f-4481-9610-987de96532e7 Download: http://download.microsoft.com/download/8/f/d/8fd0931f-23e9-4a56-b793-112a9db3bffa/NDP1.1sp1-KB840129-X86-Beta.exe Import...more >>

..NET Framework 2.0 SDK Beta 1 x86: http://www.microsoft.com/downloads/details.aspx?familyid=916ec067-8bdc-4737-9430-6cec9667655c Download [~230MB]: http://download.microsoft.com/download/a/a/1/aa1bb223-d4fa-4e1e-80c4-2dc31fbb09dc/setup.exe Runtime : http://www.micro...more >>

I have a form , I want to change form icon relate to some states, I all image list witch include some icons. How can I convert image to Icon or how to change the form icon ....in run time...more >>

Hi, Im fairly new to C# but have som experience in the C++/MFC world and I am a bit confused as I cant find some information that I am used to having. I am trying to use the RichTextBox control and specifically the Protected event. In C# I get no arguments to this event (well I do but the Ev...more >>

Hi all, I had created a database connection string in a *.udl file by the connection setting wizard. And I can easily get the udl file path in my program.And I don't know why when I set the udl file path as the ConnectionString of the OdbcConnection it throw an error means like this " unhandle ...more >>