Hi, I have a numeric up-down control. 1. How can I distinguish between programatic value change (like MyControl.Value=25) and user interface change (clicking the arrows)? 2. If the numeric up-down has some value in it (lets say 27), if we select the text and type 27 again, ValueChanged ...more >>

Hello, I have encountered a problem while trying to display images in the ListView control. I am using Visual Studio 2003/C# on windows 2000 professional SP4. My images are 32 bit PNG with alpha channel that has 256 levels. After adding them to an ImageList component, and attaching the ...more >>

Hello All! I need to seek your advice on databases. I was wondering if you guys have any suggestions on a databases that is lighter than SQL Server but much more efficient than MS Access. I am currently designing a C# program that would be deployed on computers that have no SQL Server nor...more >>

Is there any way to merge cells in a list view control? This control is very useful but unfortunately .NET Framework provides very limited functionality (e.g. owner- draw items are not available)....more >>

How do you allow an object to be stored on the clipboard such that it still pastes in text format, but also can be pasted within the application that is aware of how to deal with the object? For example, I have this object I've called CompositeTextObject. An instance of the object (cto) ca...more >>

I have a datagrid in my winform which doesn't want to show scrollbars. And when I try to change the ReadOnly properties it gives me an object reference not set error. Has anyone seen this before? ...more >>

My treeview is populated with different icons for various items in the structure. I would like to use cursors which look similar to these when dragging these nodes around. Also, I allow files from explorer to be dropped on the treeview for some nodes. I would like to use a cursor that looks li...more >>

i donno whether this is by design but i have a repainting problem.. i have placed magic docking controls inside the form..but somehow it is not painting properly.. but when i resize the form it paints itself properly.. so what i am doing is resizing the form this.Size = new Size (this.Si...more >>

Hi I have this sub in a main form; Sub OpenForm(ByVal x As String) Select Case x Case "1" form1 = New frmClients form1.TopLevel = False Me.FormsPanel.Controls.Add(form1) form1.Show() form1.BringToFront() Case "2" fo...more >>

I've never actually used SharePoint but someone asked about this. Does anyone know if this is possible or does it require WebForms? ...more >>

Hello, i want to fill all sqlDataAdapters in a form generically. I tried sth. with MemberInfo[] from system.reflection. But in the end i couldnt got the instance of my Variables. what is the normal way to get the instance of component- variable "CallByName" like ? thanks, Frank Dzaebel ...more >>

I am developing a windows application, it has a listview, when i double click in the listview i can't do anything (p.e. press an button) unless i click in any where Regards Rodrigo ...more >>

As an exercise in threading I wrote a winforms program that checks to see if links are good at a website. First it gets the web page then parses out all the URL's to an arrayList. It then displays the URL's in a dataGrid. Then it starts a new thread for each URL using WebRequest.GetResponse....more >>

Hi I have a panel to which I have added several forms as follows; form1 = New frmone form1.TopLevel = False Me.MyPanel.Controls.Add(form1) form1.BringToFront() form2 = New frmtwo form2.TopLevel = False Me.MyPanel.Controls.Add(form2) form2.BringToFront() Is there a way to know which...more >>

Hi, Is there in VS.NET IDE something like the form layout window in VB6? How cam I design a GUI independent of the client's resolution? Best, Ohad -- Ohad Young Medical Informatics Research Center Ben Gurion University Information System Eng Office Phone: 972-8-6477160 Cellular Ph...more >>

I can't figure out how to change the TabControl color. I am trying to match the tabs and background tabcontrol to that of the windows form color I have chosen. I can change the TabPages, but not the tab / tab header line. ...more >>

Hi all, I need to find if there is a way to programmatically place splitter controls. I am asking this, because I have been trying for several hours to do something like this: this.SuspendLayout(); TreeView trvTables = new TableSelector(); trvTables.Location = new Point(0,0); trvTab...more >>

I have a parent MDI form with a menu and a child form with a menu. Each menu has a item named 'View'. When the menus merge I end up with two 'View' menu items. Is there a way to prevent this and make the items under each 'View' combine into one. Any help would be appreciated. Thanks....more >>

I am using a hosted ActiveX control within a Windows Forms application. I can not properly activate the ActiveX control because the control's GUI can be initialized only when the form has completed the loading of it's GUI. How can I get the control to activate properly? I have tried to use ...more >>

I have an mdichild form whose minimum size I want to limit (can't be dragged below a certain size) Even though I am running .NET 1.1 where the minimum size property supposedly works, it's not working for my child forms. Herfried K. Wagner directed me to a code sample which he wrote as a work ...more >>

I have a form class public __gc class DualImageForm : public System::Windows::Forms::For It is a MDI child and it ihas this function protected: virtual void WndProc( Message *Msg // DualImageForm::DefWndProc(Msg) // this->DefWndProc(Msg) Form::DefWndProc(Msg) Once this func...more >>

is there an event that is raised right after the window is shown? i have been trying to create my main window and as soon as thats done, then show a login dialog box. i cant seem to figure out where to put the dialog display code. ive tried in the constructor, the onload, and the onenter, ...more >>

Hi, i have this weird problem with Inherited Forms. I have a Form with some standard functionality from which I inherit other forms. Whenever I modify the Base Form, the designer does not open the inherited Form in designmode anymore. It gives the following error message: An error ocurred...more >>

Hello, I'm using simple data bindings to wire windows forms controls to the properties of an object (the data source). I'd like to track which properties have been modified by the user. I'm looking for recommendations about how to do this in a generic fashion. I'd like to avoid incorp...more >>

In the process of monitoring my inbox with .NET code, I would like to check the body of the email message to determine if there is a code (GUID) stored in the body of the mail message formatted like the code below. The position of the code may or may not be the last thing in the body of th...more >>

Hello, Can anyone guide me to a site where I may get list of all controls that cause Memory Leakage in Windows Application build using Frmaework1.0 Through various forums, I have foud out that following controls have problem: 1. DateTimePicker - Gets associated with some SystemEvent...more >>

As the title! Thanks ...more >>

Hi, I have a standard TabControl on a form that has five tabs. The first tab has a list box from which "available" elements can be selected and moved into an Infragistics grid of "Selected" elements. This mimics a standard "pick list" form, and has buttons that will 1. Move All Availab...more >>

I'm building a virtual keyboard for a touch screen application. When I hit a key on the keyboard, I lose focus on my text box (or whatever I'm in at the time). If I have a range of text selected, when I restore focus, I lose the selected range. What I would like to do is avoid losing the f...more >>

Hi all, what is the best approach to create wizard for an application? Do i have to take as many forms as the wizards will have or take only one form and multiple panels on it. or is there any other good approach? plz provide me the answer Noor ...more >>

Hi all, I am trying to get my win forms application to start, but I'm hitting a problem which I am certain is really simple. The start for my application is ApplicationManager.cs. This class contains the Main() method and a very simple constructor. The class looks something like this: publ...more >>

I am displaying currency data in a DataGrid column. The data is right-aligned within the header and the entire column via the alignment property. However, all of the text both in the header row and the content rows is being slightly trimmed on the right-hand side of the column no matter how wi...more >>

Hi, I'm trying to implement "multiple selection" feature the way it's usually done in Windows - hold the "Ctrl" key and mouse-click on the items you want to select. The problem is that I don't receive KeyUp/Down event neither by the top-most form, not by the embedded into it controls. ...more >>

Hi, A very strange thing is going on in the TabPage class. In the documentation "Disabling Tab Pages Programmatically", the TabPage seems to have a very useful property "Enabled". However, this property doesn't appear in the TabPage members in the documentation nor in the Visual Studio IDE. ...more >>

Hi, I am wondering is there a way to have the WinForm ControlBox option set to true and disable the close button (x)? Also, is there a way to force the form to be maximized when activated? Thanks ...more >>

To edit labels in a GDI image I have placed a TextBox programmatically in a Panel. In the TextBox.Leave event I read the Text property, assing its value to my business object and close the TextBox. The problem is that when I click the mouse outside the TextBox the Leave event is not fired. The o...more >>

In vb.net, I am not able to trap the enter key neither in keypress nor in keydown event ...more >>

Hi, I have a custom user control that needs to be notified every time the BackColor of its parent is altered. Using OnBackColorChanged within my custom control only seems to work if my control's BackColor has not been set to anything. I suspect being an ambient property derived from its pa...more >>

I'm working on a utility program, and I need to have it do something every time a certain key is pressed (like Ctrl-F11, for instance), no matter what application is active at the time. The utility will be running in the system tray. I've got a screen capture program that does this, but I can'...more >>

Hi, I was wondering if I could specify a background image for the splitter control. On the Properties tab the property is not there, yet if I create the splitter entirely in code the IntelliSense window reveals that a BackgroundImage property exists. What is the proper way to set this prop...more >>

Hi All, Can anybody tell me how to create smart tags like what we see in MS word application? TIA, Jyothi ...more >>

I have been trying to create some semblance of transparency in my Controls (Panels, Buttons etc) by sublassing and adding the following lines in the Sub New() Me.SetStyle(ControlStyles.SupportsTransparentBackColor, True) Me.SetStyle(ControlStyles.UserPaint, True) Me.BackColor = Color.Tran...more >>

The RichTextBox has problems displaying characters=20 of a font, when they have a left sidebearing smaller=20 than 0. Some space is inserted, but it shouldn=B4t. To make it understandable: Say we want a '=F1' (n-tilde), but it wouldn=B4t=20 exist ... a common way to cope with this is to=20 c...more >>

I load a form from another form and get some parameters from the user. How should I pass these parameters back to the parent form? Many thanks ...more >>

Is it possible to capture the drop event onto a notify icon? I want to drop an url onto the notify icon? thx dave...more >>

Hi, I have a problem with NotifyIcon class. In my application I have used NotifyIcon to add my icon to system tray. I have set showintaskbar = false; The problem is when I do Alt+Tab I can see a ms-windows(the same icon as in Start button) Icon in the list. How can I remove from that ...more >>

hi, I am rajamanickam.. working as a software developer.... i tried to create a general class in vb.net to access an incoming parameter object's methods and properties.. by Object.GetType.InvokeMethod in System.Reflection.It is working and calling methods of the parameter object.But i c...more >>

Hi, Im trying to load a form from sub main in my module like this: Module MainModule Sub main() Dim StartForm As MainFrame StartForm = New MainFrame() StartForm.Show() End Sub End Module But the form just blinks for a second and then it dissapears?? Why?...more >>

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I have been trying to create some semblance of transparency in my Controls (Panels, Buttons etc) by sublassing and adding the following lines in the Sub New() Me.SetStyle(ControlStyles.SupportsTransparentBackColor, True) Me.SetStyle(ControlStyles.UserPaint, True) Me.BackColor = Color.Tran...more >>