How can one "lock" radio buttons to not allow the user to change the value? With textboxes, one can use the Readonly property to prevent the user from making changes to data. However, no such property exists for radio buttons, and disabling the groupbox that contains the radio buttons makes a...more >>

In the following example, click the "Real-Time Binary Streaming Using Flash, SmartClient or Image" link http://www.dundas.com/products/gauge/demos/index.aspx?Section=GaugeDemos&Body=Demos.aspx They claim the middle one to be a smart client....But I don't see how this is a smart client when ...more >>

Hi group! please, help me with the following problem: When I open a non-modal form from a VB6 written MMC snap-in the form works fine. But I can't use ob TAB key to navigate through its fields. The form just ignores it. I found some discussion about such case and they proposed a solution ...more >>

Hi everyone!! I have such weird situation/bug I don't know how to solve 2 weeks ago I've done user control that is hosted in Internet Explorer. This control in Load event starts backgroundworker (http://weblogs.asp.net/rosherove/articles/BackgroundWorker.aspx) to load some data from web...more >>

Hello, I have a special case where I must lock a form's location (i.e. can't be moved by user). I'm guessing that setting some form property or overriding some event(s) should accomplish this. However, I'm not sure of a good way to do it. Any ideas? Thanks, Jeff ...more >>

The following code is intended to display a winform (DateTimePicker Control) in a browser. But, when the aspx page that contains the reference to the winform in the object tag is run, all that is displayed is a blank placeholder and not the control. Any ideas or help is appreciated! DateT...more >>

Hey, created a custom control that includes a panel. I want to use the panel as a container for other controls I drag into the custom control in designer. I can't seem to find any information on how to do this. I've extended UserControl and SetStyle containercontrol to true, but this doesn'...more >>

I have a user control and I have several textboxes on it. I build the user control and dropped it on a window's application. I have a typed dataset in the window's application. I'm trying to bind the controls within the user control to this dataset. I have the following code in the user contro...more >>

Hi all, I need to develop multilingual WinForms application and one of the demands - RightToLeft support. When the user choose one of the RTL languages (hebrew or arabic), the form will looks mirrored. The implementation of RightToLeft property of the form and all it's controls gets partly r...more >>

Hello, for some reasons like - create a font (without a real form) - dimension of desktop I need access to a default Form / Desktop form. In which way, it is possible with windows::forms. In MFC I use 'GetDesktopWindow()'. Is 'Win32-API GetDesktopWindow()' is only way ? So long ...more >>

Hi, if i set the windows fonts up 120dpi, my applications begins to act = stange: - Splitter an not visible, Pictureboxen are getting bigger and title an = image etc. Is it possible to use .NET Winforms Application with 120dpi? Thanks in advance!...more >>

Hi, i use aan application to download an aspx file, and check ik for some values. But there had been a change, there is a login script that checks if you have a cookie, if not it show a "username/password" screen (url remains the same) i know the username password, and if i fill it once my br...more >>

My friend who sits next to me has a single cpu pc. He can edit the code in the .net ide text editor with no problem. When I edit the exact same file (after he cancels the check-out) my pc goes to 50% and just hangs for 3 minutes or so. I have tried everything to figure this out but the only...more >>

Hi All, i was wondering , how is posible to open a Form inside a Panel (for example) not through MDI property, is a container the right tool for this? How am MDIParent form is doing it? thx in advance ...more >>

Hello, We're doing our own datagrid based on the System.windows.forms.datagrid control, and are having some problems with horizontal scrolling. In general, we construct our datagrid adding a tablestyle and gridcolumnstyles to that tablestyle. If we have invisible columns, we add the gridcol...more >>

Hi, I want to override the MyBase.OnPaint(ByVal pe As System.Windows.Forms.PaintEventArgs) of the DataGrid, to have some custom property's designed (other column headers etc). The problem is that I don't know the content of the original MyBase.OnPaint, so I don't know what I need to put in ...more >>

Hi, I'm creating a windows forms application. Users will normally launch this app from a Windows shortcut, but I need to give them an option of starting with command line arguments for integration with another program. I was able to do this by using Sub Main as a startup object, but the p...more >>

Hi, we have a Windows Forms control which uses the standard .NET licensing mechanism (registry holds license key at design time, and key is embedded in executable for run-time). This works fine enough when building regular forms, and does even work with IE hosting. The problem is, we have ...more >>

I just fired up VS05 and attempted to write a simple WinForms app in C#. I not new to programming, but I am new to VS.NET. Can anyone point me to a tutorial that will succinctly explain all this stuff I see in Solution Explorer, and the relationship between the various files (Form1.Designer....more >>

I have a MDI app and I want to have a image in the client area. I can't use the Picture control because it hides the MDIchild Forms. I tried to send the Picture control to the back after I display the child form, but it disappears. Even when I use just the image background the image dose no...more >>

Hi, Development is done under XP SP2, C# .NET, Visual Studio .NET 2003, .NET v1.1 I have a System.Windows.Form that displays a dialog when a button is pressed. The dialog has a list box, a text box used as a typing helper, and two buttons in it. The list box has approximately 50,00...more >>

Hi, I have a tab control (actually 3 levels of them) on a form. If I allow the form to be resized, do I have to handle the resize of the tab controls, etc. in code or am I missing some design setting that automatically handles this? Thanks, NJ...more >>

I have a form with two comboboxes. I populate the first one from a database. When it's selected index changes, the second one is populated. In the first combobox, the first item shows before anything is selected. In the second its just blank, and you have to click on the drop down ...more >>

Hi I have a method to catch the event private void calendar_DateSelected(object sender, System.Windows.Forms.DateRangeEventArgs e) { } Does anyone knows how can I get the selected date from MonthCalendar? and rturn it as a string ? Thanks a lot Lam ...more >>

Some of us on the .net framework were working on an issue that I've encountered. It seems that in this code, the catch will not catch the exception outside of Visual Studio. If run straight from the exe, it'll generate an unhandled exception. With some more testing, I've noticed this also h...more >>

Writing a C# .net windows app to compare 2 code files (written in VB6). Can anyone point me in the right direction as to how I can best determine the differences between 2 vb code files. (much like windiff, but would like to include a merge capability). This would essentially be done prog...more >>

I added a treeview to my winform, based on an xml file. I want that the treeview will act as a menu, so each time a user click\select a node, a file will be opened. the pairs of node item - file is defined in the xml file in the following example structure: <?xml version="1.0" encoding="utf-...more >>

I have a form with listview control. The listview control is populated and sorted in the begining. I want to select and highlight the very first row in lietview control. Unfortunately the following doesn't work: m_FileList->Items->Item[0]->Selected = true ; because Item[0] is not always d...more >>

How can I detect if a form has a dialog showing? For example, in form1, I have code to show a dialog: private void FormProduct_Closing(object sender, CancelEventArgs e) { // ... MessageBox.Show(...); // ... } which is not closed yet. And in another thread, I would like to know whe...more >>

I just opened VS2005 beta 2 for the very first time and started out with a good old Hello World windows forms application. As was my custom in VS2002/2003, I added a call at the bottom of InitializeComponent() to call my own initialization routine which I placed over in Form1.vb, finding the I...more >>

hi, all I have a textbox control. I do not want to display its border. how to set the flag? thanks...more >>

Hi, In my application I need to list some files (a little bit like in windows explorer), and I wan't to show next to each file the right Icon, as used in windows explorer. how can i find which Icon is used for each file-type, and use that icon to be shown in my application? Thanks a lot in ...more >>

hi, all I want to make my DataGrid rows with different Color? for example: the first line is Blue, the second line is Green, and the header is Red How to do it? thanks...more >>

Hi I have (two) tree view controls that can work in either "read-only" or "normal" mode. In "normal mode", items can be moved between the trees using drag & drop. When a tree is in "read only" mode, items can only be copied from it, not moved. However, to get the copy operation to work, the...more >>

How does one bring images in menu bars in .NET 2003 like Office has. Similarly how to have toolbars that can be moved and can turn into palette windows...more >>

I want to access a control (say a textbox) in a window (a form) from another class (MyClass). Both my form class and MyClass are in the same project. Now, since the controls are declared as internal (Friend in VB.NET), I shud be able to acess them. Even though I'm able to get all the controls ...more >>

Hi, I have a form with a button, treeview and listbox. If I click the button, some data is retreived from the database and treeview is filled with nodes. I also have AfterSelect eventhandler on the treeview that displays some additional list of data in the listbox when particular node is sele...more >>

Regardless which Version of a Winform.EXE is on the webserver. On the user side always the old version is executed. I tries several IE settings - without success. Seems to be running always from the download assembly cache even if the server version is newer. It's working well on my computer(a...more >>

Hello, I want to detect when my control's parent redraws itself. I know that this will cause a repaint in my control but I want to detect this before a paint event occurs in my control... Does anybody know if any event is fired in my control (before paint event) for this purpose? Maybe O...more >>

when I use the cm.addnew method to add datarow, I know the editing can be completed with bindingcontrol, such as textbox, if i have some columns which I have not bind it on winform, how to edit them with coding? I cannot find it in datatable, it looks like "unsave record". Thanks in advance. ...more >>

Hi, How Can I have in my VB.NET-application XP-like Controls, when it is deployed on Windows 2000? I don't think a manifest file will work than? Or I didn't manage to get it work? Any help would be really appreciated. Thanks a lot in advance, Pieter ...more >>

I've included a picture below to show what I am trying to accomplish. It is best to copy/paste into notepad to get the spacing correct. I have a dataset that contains 3 tables. Two of the tables contain data and the third links them together. The dataset has a constraint setup as well. T...more >>

I'm trying to write a simple Windows Forms based clock. Right now if flickers pretty badly when updated both from the timer and resizing. I thought the way I buffered the image before blitting would eliminate it but it does not. What am I doing wrong? import System import System.Drawing ...more >>

I have a MDI Children and want to access, lets say a label. I have seen in other posts: DirectCast(????, ????).MyLabel = "Label Text" If MDIMain is the MDI and FormA is the MDI Child, how can I make it work? Thanks, Brian ...more >>

Hi all. Spent 4 years in asp.net, have never used System.Windows.Forms.Form class before. Now I need to create a simple winform that will use some web service to get/send user info. Sorry if the question looks dummy :) In winforms, what's the best way to locally store user info (for instan...more >>

I am trying to come up with a way to read a barcode using a wedge scanner, drop the value into a text field and then fire an enter event for the textbox. There is very little information to be found about doing any of this expecially for c# programmers. Thanks...more >>

Is there a way to check if a specified control have focus beside handling LostFocus/GotFocus events ? I'm pretty sure there was in prev version of VB something like control.HaveFocus() ......more >>

Hi All. Reading the help file for FileBrowserDialog class, It says in red letters at the top of the page Note: This namespace, class, or member is supported only in version 1.1 of the .NET Framework. Does this mean it is not supported in versions prior to V1.1, or does it mean that it wil...more >>

I have an application that executes SQL queries against a database. When the user presses "Execute", I change the cursor to "Wait" while the query executes and back to "Default" when it is complete. Occasionally, a user will realize the query was mistaken and wants to Cancel the query mid-reques...more >>

What I'd like to do is create my own custom task bar, very similar to the one that holds the Start button, quick launch bar, and the system tray. Basically i need a window that i can put whatever i want in, but other windows will size themselves to it when they are maximized. They should doc...more >>

I've got a form with OK/Cancel buttons and a control box "X" button. Cancel is fully wired with DialogResult and all that jazz. There is a textbox on the form with a Validating event. The Cancel button has CausesValidation = false. If I click the Cancel button, validation is skipped and ev...more >>

Hi, I'm writing a graphical program in which I let shapes (rectangles, regions, ...) move around. how can I detect if two shapes 'collide' ? thanks Chris ********************************************************************** Sent via Fuzzy Software @ http://www.fuzzysoftware.com/ Comp...more >>

We are adding clipboard support for an exception handler we use, so users can paste the information about the exception into an email or document. I am using the following method: Clipboard.SetDataObject(sb.ToString()); (after building the stringbuilder of course) The problem is, once t...more >>

Hello, I have a custom DataGridColumn that displays an editable ComboBox instead of a TextBox when the control is edited. Everything id working great except for one thing: when the focus is in the column to the left of my custom column and the Tab key is pressed, my control gains focus...more >>

Hi there, I have an application which creates several top-level forms (single threaded application). When creating a dialog (with ShowDialog()) on one of them, all other forms get freezed, which is not the wanted behaviour. Only the form creating the dialog should get freezed. Is ther...more >>

I have a scrolable control I set its scrollable position to this.AutoScrollPosition = new Point(20, 20); if I get the position after that, it's inverted! Console.WriteLine(this.AutoScrollPosition); => {X=-20, y=-20} and if I try to set negative value, they are zeroed.... this.AutoScrollPo...more >>