Hi, I got a challenge with the ListView. When using the Virtual Mode and OwnerDrawn the images flicker very strongly. When using the normal mode and OwnerDrawn there is no flicker. I would need to use the Virtual Mode though :). Could anybody help (please use the code below as an example)...more >>

Hello, I have a form, on this form 2 panels (on the left for a treeview, on the right for the content). Is it possible to resize automatically the panels to adjust them to the main form' size if I resize this one ? In Delphi, it was possible to align right (or left) the panels. Not possi...more >>

Hi All! This question has been posted before, but unfortunatly I was unable to get an answer. I use a special ListViewItemComparer-class to sort items in a listview for any column, and I have also allowed column-reordering. So far so good, but if I click the columnheader of any column, a...more >>

Does anyone have any recommendations on magazines having articles/code related to NET development? Thanks in advance....more >>

Hi All, I have a TreeView setup with 2 Items on it. Node1, Node2. I would Like to be able to open a form called Form1, when I double click on Node1, Form 2 when I double click on Node 2. I`ve done a google search but can`t find to much info on it. Could somebody possible point me in the ri...more >>

Hello, I have been working with Visual Studio.net for a few years now and just recently come to a problem. Up until now I have created all my programs to be resolution specific. Most of them are written to run at 800 X 600, others were predeterminted as to what resolution they would be wr...more >>

I just discovered the hard way that the Visual Studio designer for forms and controls does not support generics. I created the following controls: Base Class: public partial class CtlDataGrid<CollectionClass, InfoClass> : CtlBase where CollectionClass : BaseCollection<InfoClass...more >>

I have an application which would create an email, however, I would ideally like to attach a remote assistance file from the user. Can this be done through code, where the email is created and the remote assistance file is added as an attachment. Basically exactly what happens when the user Re...more >>

Greetings... I have created a set of forms for an Office Add-In that use, among other things, CheckedListBox controls. The software has been installed by about 15 users so far, and two of the 15 are having trouble with it. Everything else in the application works fine, but for the CheckedLi...more >>

Hi, I've got a problem with a .NET 2.0 application: When I try to cancel the FormClosing event of the main form of the program (e.Cancel = true), this same event is performed a second time (now it can be cancelled successfully). The first time the FormClosing-method is called with CloseReason...more >>

How do I disable a PropertyGrid item at runtime. i am using this on windows form.and want only few items to be editable to the user.other items should be disabled ...more >>

Hi, I have lots of trival databound forms that maintain simple tables that I want to port to winforms and edit with a datagridview or similar. I would like to achieve the following: Deriving from a baseclass 'DataBoundForm' or similar I want to be able to set a design-time sql select state...more >>

How do I get started with the Composite UI Application Block? There's a lot to the framework, enough that it will take me a long time to figure it out just by looking at the code. I've looked at the Walkthrough and QuickStart projects, but there doesn't seem to be any documentation, other t...more >>

SQL Server will be used as the back-end database to a non trivial client application. In question is the choice of client application: I need to be able to speak intelligently about when one client (MS Access vs ..NET Windows Forms) would be preferred over the other. While I have some go...more >>

I have a windows application that accepts command line parms at startup. It works fine. However, if (while the app is running) the user tries to run it again with another command line start, I would like the existing instance of the app to take the new command line parms and act appropriately....more >>

Hello, when I change the cell of a (data bound) DataGridView directly by setting the 'Value' property of the cell, the cell is updated not before I change the focus by clicking into another cell. I tried to call methods like 'Update', 'UpdateCellValue', 'Invalidate' and 'InvalidateCell' just ...more >>

hi all, i am having trouble updating a datset because i get the follwing error in the Data Adapter configuration Wizard: Generated UPDATE statement. could not determine which columns uniquely identify the rows for "Customers" 'Customers' is the only table from the database that im using f...more >>

Hi yall! Has anyone expirienced the same? I align some controls on a form (set the anchors, right align some so everything resizes/moves nicely when the form is resized. I store the forms size and position into the applications settings. When I restart and reload these settings, the applica...more >>

Is there any function return the short date format on the regional and Language Options under control panel? ...more >>

how do i place a button control on a certain part(using coordinates) in an image... in short, i want the functions of a button in a certain part of a image that in going to be placed in a form in C#.. Thanks in advance!...more >>

I am using .NET 2.0 Framework, and Visual Studio 2005. Is it possible to code a program such that when the user clicks a button, it shutdown windows, irregardless of Windows XP or 98? If so, how to do that? ...more >>

Hi, I'm working on a RichTextBox with some "in-program" style-features (e.g. *no way* becomes bold : like MS Word does). Got everything working fine, flickerfree and reasonable fast, but in order to set the style of some part of the text I use the "Selection" method (in the case of *text* the...more >>

Hi, If users change the value of NumericUpDown by clicking the arrows, this change can be trapped with the .ValueCHanged event. But .ValueCHanged will not work if users change from keyboard? How do I trap all changes in NumericUpDown no matter if instigated from arrow keys or from keyboard...more >>

Hi all Flash does not respond with the webbrowser control for .net 2.0. Is there a work around to get flash working? thanks Sean ...more >>

Hello, I am creating a MDI child window from a MDI parent window. I have tried setting the Left and Top members before calling Show() and it seems to have no effect. If I set Left and Top after calling Show() the form flashes in the default location and moves into the position I set with...more >>

I am having a layout issue I can't seem to work out in Visual Studio 2005. I have a Windows form with a Split Container. In the second panel (right side) I have a tab control. The tab control has anchor properties of left, right, top, and bottom. It also has its dock property set to "Fill". ...more >>

Hi, is it possible to create a DLL including some functions which will create a Windows Forms Dialog? If this is possible i'd like to know if i can use this DLL in native ( normal win32 ) applications? If this is also possible please tell me how this has to be done. Thanks a lot Michael ...more >>

Does anyone have a sample code for this? I want to draw an image in memory into another image using C# and win32 gdi.. if its confusing i'll rephrase it. I want to draw many images into one image in memory using win32 gdi (sample using bitblt or any suggested win32 that works the fastest) sin...more >>

I have a windows form (a). On the form there is a search button that causes another windows form (b) with a datagrid used to display the retrived data from the SQL database. I would like to close form (a & b) when I select the requested record. And reopen form (a) and display the selected rec...more >>

My app needs to load a plaintext file (1 to 15MBs), edit & convert it to rtf, and finally output it to a RichTextBox (RTB). Simple enough... Loading a 5MB file (average case for this app) and editing/converting it to an rtf string takes about 1 second to accomplish...no big deal. However, ...more >>

I am trying to monitor incoming messages by overriding the System.windows.form WndProc method. I have a radar device that sends messages via the Message parameter for the WndProc method. The program i am developing should be a console application but the radar only sends messages via the wnd...more >>

I apologize that I am new to windows forms programming. I'm looking for the correct control or components to use to create standard browse-for-a-file capability. I'd like to have a textbox and a button next to it that says "Browse". When you click the browse button you would get the standar...more >>

Hi gurus, I need some advises/suggestion. We are using the following command to send email from the client. Its pretty simple Dim MailMessage As New System.Net.Mail.MailMessage(strFrom, strTo) MailMessage.. MailMessage.. Dim client As New System.Net.Mail.SmtpClient("host") client.Send...more >>

I wish to have a window whose width can be resized but not its height. I tried this: this.MaximumSize = new System.Drawing.Size(0, 300); this.MinimumSize = new System.Drawing.Size(0, 300); which according to the documentation on MaximumSize and MinimumSize should accomplish what I want. Th...more >>

I have a windows app which is distributed using click once deployment. This works great but I now face a dilemma. I have just developed a plugin for my application which I would like the parent application to consume/invoke using reflection. Is there any way I can force these plugins to downl...more >>

Hi Everybody I want to add to my "File" menu the "Recent Files" list in Visual C# 2003. Hope you can help me. thanks ...more >>

Hi, I have combo Box clearing when form overlaps...Can't seem to catch the event. Why is it doing this? ...more >>

Trying to draw a dashed line within a User Control I get error: Changes cannot be made to Pen because permissions are not valid Why is this ?? Pen dashed = Pens.DarkGray; dashed.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash; g.DrawLine(dashed, 0, 100, 200, 100); ...more >>

I have some fonts installed on my machine which I think are postscript format (they are .pfm files), but I can't use these in my windows application. Any reason why not ? ...more >>

Hi all, I'm mimicking the AutoScroll functionality from a ScrollableContainer on my user control (for reasons of having more control and flexibility), but I seem to have hit a bit of a wall. In the case of having a horizontal scroll bar, I set his .Maximum property to say 167, but when I...more >>

I wish to replace the tile bar with my own code which will have its own max min buttons etc, but wish to still keep the Border style, if I set the FormBorderStyle property ot none I loose the border of the window, and all the oterh option always provide some sort of title bar. Any Ideas. T...more >>

I have a UserControl that I have a SplitContainer in. I have placed several Controls in the panel1 and 2 of the split container and I want to be able to do a "GetChildAtPoint" when clicking on the UserControl. However, all I get is the SplitContainer as result. How can I disregard the spli...more >>

Hi, i have a multithreaded application which uses forms and i have a worker thread that has to create a modeless dialog to monitor some of the operation which it has to do. The problem is that if you create the dialog and call show() from the thread this dialog wont't have a message queue and ...more >>

Is there any best methods to deloyment a win-form solutions to over 200 pcs? ...more >>

How to decide the best choice between web-form and win-form for the next solution? In my case, the new projects will have over 200 users to use and we will apply part-by-part function components add to production environment when we developed a part and parts. The projects will have a very...more >>