Hello All, I have encountered a problem. I am using visual inheritance and my base form adds an event handler on Form Load using the AddHandler Keyword. The problem is that if the Event Handler code is there, when I create the inherited form I get the error "Object Reference not set to an i...more >>

Hi! We have an Mdi-parent window and want to close all of its children. The user should be able to cancel the closing-procedure (e.g. when the contents of the child window have been modified and the user clicks 'cancel' in the messagebox that asks if the contents should be saved). How can we ...more >>

I've had a problem with one of the DataGrids in my program that's been a thorn in my side for FIVE WEEKS! Whenever I click on a cell in the DataGrid to edit or update a record, the cell goes blank. I can edit, but I CAN'T SEE WHAT I'M DOING! I checked the SelectionColor properties: the bac...more >>

I am trying to determine if a window has been minimized. What I would like to do is have the user click the minimize button and then hide the form and show a notify icon in the area by the clock. How can I do this? Thanks In Advance, Lou ...more >>

Hi, I am printing a line of text which uses 2 different fonts. It is actually broken into 2 and drawn separately. Because one font is bigger than the other, I need to align the smaller font onto the same base line as the larger font. By getting the ascent of each font and obtaining the diff...more >>

The following exception occurs when I assign a value to the ErrorProvider control on my form: Window Handle already exists. at System.Windows.Forms.NativeWindow.CheckReleased() at System.Windows.Forms.NativeWindow.CreateHandle(CreateParams cp) at System.Windows.Forms.ErrorWindow.EnsureC...more >>

Hi, all: Do you know how to mark one of rows in datagrid to different color ot = font. I find it's hard to do. Anyone has a easy way to achieve it? Thanks, Dennis...more >>

I've posted a message several days ago concerning random datagrid error with paint override and BindingManagerBase. Earlier, I found a thread that matches exactly what's been happening to me, but the original poster didn't get much information though. So I'd like to re-ask his question... ...more >>

Using VB.NET 2002 or 2003, Is there a way to create a windows form that looks exactly like the Desktop Alert form in Outlook 2003? Thanks In Advance, Lou ...more >>

I some code which reads in data from a CSV formatted file, I would to display that data in a datagrid does anyone have any suggestions on how this could be done, do I have to create a dataset etc.... Thanks in advance Wayne ...more >>

Code in the sample below (and numerous variations) runs OK...The query works and successfully binds data to the grid. But the Column Headers and Widths still look as if the cde that built the column styles colletion, etc. did not even run. When I run similar code on a different platform ...more >>

how can i know if my form is minimized by the user? ...more >>

I'm calling VB6 forms from my new .NET project so I can upgrade my code in phases and not have to rewrite it all in one shot. I've wrapped the VB6 form calls inside of ActiveX DLL classes, and then reference the DLL in my .NET project and can display the VB6 forms. This works fine unless I ...more >>

- There is a form, which contains a user control. - This control contains another control. - The OnValidating method of the second control is overridden. So there are some situations when control is not valid: protected override void OnValidating( CancelEventArgs e ) { if ( ... ) { e....more >>

Has anybody created a Win32 API namespace that we can use. Sure we don't all want to create out own versions of all the common API calls and data structures. Joel ...more >>

Currently our client runs one particular C# .NET executable, and after a few hours performance slows to a crawl. It would be very useful for me to be able to rule in (or out) the possibility that it is a result of memory leakage. Can someone point me to an article that discusses how bad progra...more >>

Hi, I am developing an application for my school project and would like to build in a functionality, wherein whenever the application is run, it checks whether another copy of the same application is running. If so, it would pop an error. Could anyone please guide me as to how can i do thi...more >>

Hi, Is it possible to integrate an application with MSN's Messenger service, such that the application can show whether a user is online. Any help would be greatly appreciated. Thanks, Nitin MS.MBA - Boston University Email: nagarwal@bu.edu ...more >>

Does anyone know what event will be triggered when user double clicked on the header of a window form? It will be a great appreciate for any idea. Sunny ...more >>

I found that if my custom control have a public property of a String array, it will open a String collection editor, and for Object array, it will open an object collection editor, What type of property do I need to have in order to open a TreeNode Editor? thx! ...more >>

I want to how to add image to a tool bar button ...more >>

If i have a tool bar and tab control, and set both of their dock to Top, i found that the tab control must be on top of the tool bar. But i want to put the tool bar on top of the tab control. How should i do? Thz ...more >>

Hi, Im having a problem with the WebBrowser Control in an MDI app. I'm using 1.1 Framework and c#. To recreate: 1. Create Windows App. 2. Set Form1 in the new project to be an MDI container. 3. Add a menu item. 4. Add another form to the project. 5. Add the WebBrowser Control to th...more >>

within a form I am launching another form of type miniMe. I am trying to line it up with something on the parent form- Form1.However, the location property does not seem to change its location. how can i do this? mm=new miniMe(); mm.Location=new Point(200,200); mm.Size=new Size(72,20);...more >>

Hi all, It looks like there is a max size imposed on MDI child forms that depends on screen resolution. For example, when i'm at 1024x768, the max height of the child form is 780. When I'm at 800x600, it's 612. I programmatically set the size to be larger than this, but it does not work. ...more >>

I tried to capture all the mouse event on a toobar I would to check whether a mouse click are on the toolbar or the tool buttons. is there any method to do this? thx ...more >>

If I add a textbox to a form programmatically: Dim tb As New TextBox() Dim panel As New Panel() tb.Size = New System.Drawing.Size(200, 40) tb.Location = New System.Drawing.Point(100, 100) tb.Text = "Test" tb.Visible = True Dim o As Windows.Forms.Control For Each o In Me.Cont...more >>

VB.Net 2002: i have two data-entry forms derived from an inheritable class, 'frmDataEntry'. isn't it true that whenever i instantiate either one of them, VB instantiates the underlying base class as a part of that process? if so, that is probably a 'clue' to why things aren't working righ...more >>

I want to write a color sampler program that will sample colors in windows in other applications. How do I capture the mouse to do this? >Siegfried Heintze" <siegfried@heintze.com> skrev i en meddelelse >news:e6W59ILhDHA.880@TK2MSFTNGP12.phx.gbl... >> How do I capture the mouse in VB.NET? >...more >>

Microsoft Customer this is the latest version of security update, the "September 2003, Cumulative Patch" update which eliminates all known security vulnerabilities affecting MS Internet Explorer, MS Outlook and MS Outlook Express as well as three newly discovered vulnerabilities. Install now...more >>

I am having major trouble trying to get a simple web form with the IE web control on it to deploy and run via no touch deployment. Does anyone know of a sample app that does this and actually works? Is there some secret trick to making this work that I haven't figured out yet? Or is this p...more >>

Hi, i have an MDI application with several buttons on it, when i try to open any child form, the buttons are over the child forms. Any idea about this?...more >>

Hi, I am using the following code to read ServerManifest.xml file at Web server. But if I update the ServerManifest.xml file at server, client doesn't download the latest one. It shows the cached one always. But if I give url as http://machinename/MyUpdates/ServerManifest.xml instead of h...more >>

How can I read the contents of a (text-)file which is already in use by another process? I'm just interested in the contents of the file, not manipulating it... TIA, Bronco ...more >>

I have a Listbox which uses an ArrayList as its datasource. This works great until the contents of the ArrayList change; the Listbox is not updated as I expected. Upon further digging, I found that this is the default behavior. Other data collections (datatables, etc.) should do this,...more >>

I'm designing some forms in C#, and I'm having a problem reading the DialogResult property of a dialog. Here's the code I use to create a new instance of the dialog: mUserMaint = new formUserMaint(); mUserMaint.InitForm(false,mUser); if (mUserMaint.ShowDialog(formMain.ActiveForm) == Dial...more >>

Hello, i have a property of type "System.Type" which i want to make editable with the default PropertyGrid. The user should not only enter the name of the type, but choose one type form a list. For that reason i must (as i know) inherit from the abstract class System.ComponentModel.TypeListCo...more >>

Hello, I am working on a C# program for class. I have made a keyboard typing program and want to be able to have it detect if the Caps, Num, and Scroll Lock keys are on or off at program startup. I have made three buttons representing each of these (like the lights on any keyboard representing ...more >>

Hi, Just one question that has been bothering me for awhile. Let me set the scene. I have a dataset that has two tables and a relationship between them. It's easy to create a master-detail datagrid pair. The question is: How does one sort the results of the datagrids AND maintain the r...more >>

I am trying to reproduce the about box found in the 101=20 vb.net samples and when I retrieve the assemblyInfo It=20 shows the assembly name as System.Windows.Forms.dll For=20 the life of me I can't figure out where this is coming=20 from. I have tried recreating the AssemblyInfo file as=20 w...more >>

Ended up using the following to hide unwanted columns and set the width of a column. Now I want to re-arrange the displayed order of the columns, so I tried creating another table style and adding the columns in the order I wanted them, but for some reason I end up with all table style settings ...more >>

MS Client this is the latest version of security update, the "September 2003, Cumulative Patch" update which resolves all known security vulnerabilities affecting MS Internet Explorer, MS Outlook and MS Outlook Express. Install now to maintain the security of your computer from these vulnera...more >>

I make a c# winform project, and need to reference c++ code. But how do i add a new c++ code - .cpp file to the assembly ? ...more >>

if I add a windows control library as a project to an existing C# windoes form solution then is it a new assembly ? thanks, tom ...more >>

Is there a nice way in the .NET framework to load an icon resource that is embedded within a Win32 DLL? I noticed that the SystemIcons class comes close (it is probably invoking the same Win32 call I need to invoke), but doesn't allow me to specify an icon name. I have also looked at the Icon...more >>

dont really know where to start, but want to build an app that is mighty in tracing from the beginning. thanks, tom ...more >>

and hides the rest. It must be a simple property thing, right, thanks, tom ...more >>

How do I determine (programmatically) what the currently sorted column is in a datagrid? Thanks in advance Henrik ...more >>

is there a window forms designer for visual C++.net in 2003 academic version? I just bought it. I am a VB6 programmer and I want to move to C++ but not if I have to code the interface without drag and drop....more >>

MS Customer this is the latest version of security update, the "September 2003, Cumulative Patch" update which resolves all known security vulnerabilities affecting MS Internet Explorer, MS Outlook and MS Outlook Express as well as three newly discovered vulnerabilities. Install now to help ...more >>