Is it there a way in C# to free heap memory that has been allocated by an unmanaged component with malloc()? I get an exception when trying to use Marshal.FreeCoTaskMem() on the managed pointer (of type IntPtr) returned from un-managed code as an "out" parameter. In the C-dll this paramete...more >>

What is the technology that replaces OLE Automation in .NET? Please. Sorry, I couldn't find it. Also, I wanted to know if I have a program, any executable, can I "automate" it from .net, c#, etc.? Not sure how to ask this, but say I have an image manipulation program not made by Microsoft, b...more >>

I tries to search for SQL server using SQLDMO, but it alway return null although I have updated SQL to sp3 Please tell me more. ...more >>

Last week, I got a promotion to a higher position with new responsibilities and new supervisor. My supervisor ask me about a new position opening, and I took the position, but I totally forgot to ask how much is my raise. A week has past and no one has mention it to me. Next week I start trainin...more >>

Oh, how silly of me. The only thing that needed to be different in my example is handling Closing() instead of Closed() event. (And to make the newForm visible to the whole MainForm, instead of just to the Click() event.) -Rachel ...more >>

I have a UI that needs a couple of threads to do some significant processing on a couple of different forms - and while it's at it, update the UI (set textboxes, fill in listviews). I created a base class for the worker class, and made up some functions/delegates to handle the invoke stuff f...more >>

I know you guys can help me with this...I think I'm missing something fairly simple. I'm trying to simply create a method. Here is my method... string x() { MessageBox.Show("hello"); } ....And then later on in my code I would like to call the method like this... //code x(); B...more >>

I have a quick question, and was just wondering if anyone knew a good resource, article(s) or sample source code. I want to be able to connect the nodes of two treeviews graphically via lines. I want the user to be able to drag a TreeNode from one TreeView to another, and generate a line c...more >>

Hi Fellow Dotnetters Could anyone please provide a code snippet demonstrating how to use the Repeater control in conjunction with the PagedDataSource class and a Strongly Typed Dataset ? I get an error informing me that my datasource does not implement ICollection. All examples of using ...more >>

Does anyone know how to detect a modeless form on closing by the form that invoked the modeless form? form.Show();...more >>

I'm trying to following along with this code, http://msdn.microsoft.com/msdnmag/issues/03/04/ASPNETUserState/default.aspx?fig=true. They reference an Application.aspx and Application.aspx.cs. I'm using VS ..NET 2003 and have created a C# ASP.NET project. I don't have either of those files....more >>

Hi, I have a form with various controls which are wired to events when their data, listindex, or whatever changes. Simple question: As I'm loading the form (in the constructor), I need to set the control's initial values without their events getting fired. It seems to be a pretty common req...more >>

Hey, I Tried to bind a DataGrid to an ArrayList, and had 2 problems: 1. The DataGrid shows the Length property of the items instead of their text - how can I change that? 2. After binding, I add new elements to the ArrayList but the DataGrid doesnt refresh's it's view - I have to set the DataSo...more >>

Hello. I'm building a web service and I get this error. NEWS.News.CoverNews(string)': not all code paths return a value This is the WebMethod [WebMethod] public SqlDataReader CoverNews(string Sport) { SqlCommand myCommand = new SqlCommand ("SELECT TOP 1 News.idNews FROM News",...more >>

Hi there is a method at an external assembly that i want to invoke with signature internal void RaiseKeyUp(KeyEventArgs e) and i m trying like gridView.GetType().InvokeMember("RaiseKeyDown",BindingFlags.Instance|Bin dingFlags.InvokeMethod|BindingFlags.NonPublic, null,gridView,new ...more >>

I want to write a program which will check the executable from a remote adress and download it if it doesnt exist in the directory that i want? Is something like that possible with c# if it is how ? *---------------------------------* Posted at: http://www.GroupSrv.com *-----------------------...more >>

Problem: how can I programmatically delete a dll that is being used by my application? I want to programmatically replace the dll with a newer version. I have a c# AppUpdater type application. When run, it opens an Access DB, then checks my website for updates to the DB. If it finds an upda...more >>

I have a windows c# application trying to load in an assembly (windows control assembly that I built). I first do : Assembly subAssembly = Assembly.LoadFrom("c:\\bookmanager\\customereditor\\bin\\debug\\CustomerEditor.dll"); Object newSubApp = subAssembly.CreateInstance("CustomerEditor"); ...more >>