Hi, I am using DataGridview in my application. In that i am able to display images. when i click the any cell of the datagrid i wanted to open a new Frameless window(which contains some checkboxes and lables) on top of that cell. but i am not able to display that form on top of that cell. i...more >>

Hi, I am using DataGridview in my application. In that i am able to display images. when i click the any cell of the datagrid i wanted to open a new Frameless window(which contains some checkboxes and lables) on top of that cell. but i am not able to display that form on top o...more >>

I have an app I'm writing in .net 2.0. Basically all I want visible in the app is a system tray icon, that then launches a Windows form for configuration. I want to trap Window messages and, when I see a particular message, do some work. It works fine if a Windows form is up and visible but ...more >>

I have not been able to find a way to get the actual Location coordinates (Left and Top), only the X and Y index. The only thing I've found so far is to use the paint event to map the values to variables, but I always seem to be one click behind. Any suggestions? Lennart ...more >>

Hello. We have a Form with multiple controls (textboxes, Comboboxes, etc). I have these controls binding to an user Binding Data Source. PROBLEM. The last control edited is not getting updated UNLESS we click somewhere else (that forces the control to lose focus). If we click on the sa...more >>

I am putting together a control which will work like a combo box - except its drop down will be a Tree View. When I use the control in a panel on a form I can't resize it to allow for the drop down part - it is constrained by the size of its parent panel - yet a combo Box can open up and wi...more >>

I'm using VB.net 2005 - - I have 2 questions, actually - - - 1. I remember, in VB6, there was a way, to set command line parameters or something, so that, if you use the 'Open With' option, or dragged a file onto the MDI interface, it would open inside the interface. 2. How can I make it so t...more >>

Hi all, (I'm reposting this, original title was misleading) I'm new to .NET, and I have a silly little problem. My application's layout is simple: a window with one splitter with a treeview control in the left pane and a Panel for rendering a DirectX scene in the right pane. My problem is...more >>

Hi. I have created custom control from TextBox. This control has lookup capability, users can press F4 and a dialog form is shown to provide help with input. This works fine however I would like to open dialog form just below my control. At this moment windows is deciding where to place the d...more >>

I struggled with a problem I had with a combobox bound to a bindingsource which has as its datasource a collection of custom objects. The comobobx was bound to a nullable integer property of the custom object. When I tried to change the value of the dropdown and tabbed off the control, the dr...more >>

Anybody that have good references to books that covers programming WPF with guidelines for design. -- Harald SMS...more >>

Hi, I've got a problem with the PropertyGrid and the INotifyPropertyChanged interface. I have a class that implements the INotifyPropertyChanged and raises the PropertyChanged when a property of this class is changed. My PropertyGrid is connected to this object through the SelectedObject prop...more >>

I have 2 listboxes side by side where the user can move an item from left to right or vice versa by double clicking the item or clicking on a button(s) between the two listboxes. I want to enable to disable the move left or move right buttons as determined by the number of items in the listbo...more >>

I have a DatagridView bound to a bindingsource. I programmatically add a ComboboxColumn and bind it to another BindingSource like this: Dim colActType As New DataGridViewComboBoxColumn colActType.DataSource = ActivityTypesBindingSource colActType.HeaderText...more >>

When programming in access I can make this call dialogResult = Application.OpenFileDialog.Show() ' May not be the exactly correct syntax The user can manipulate the column sizes the sorting,etc. When I call that that code again, the OpenFileDialog remembers the listing type and the sor...more >>

Hello I have a managed class library (written in C#) that is used both in ASP.NET and Windows applications. How can I determine which platform has been called a class method in this library. Thanks in advance. Hamed ...more >>

I tried to show an pdf on the WebBrowser. I use this code: this.webBrowser1.Navigate(@"C:\Path\PDFName.pdf"); I get all the time this Error message as an pop-up: An error has occurred in the script on this page Line 2 Char 1 Invalid character Code: 0 URL: file://C:\Path\PDFName.pdf ...more >>

Hi, I have a listbox with 3000 entries, all of 4 chars, and the user needs to be able easily select dozens of them... When the user is selecting items, they type for example ABB, and the listbox first goes to A, then B, rather than searching for ABB. Is there any way to setup the listbo...more >>

I have a WinForms class (A) that contains a DataGridView and a class B inherited from A. The DataGridView of class A contains a RowValidating event, in class B no such event exists. But when I leave a row in class B this validating event is not fired, in contrast to an inherited RowLeave event...more >>

Hello, I set the propery "DataSource" to a dataset returned by a method, this dataset is not empty but the grid look empty. Any idea why ? Regards, ...more >>

When using the datetimepicker with the checkbox visible, before receiving the focus, the checkbox is colored as if it already has the focus (even though it does not). The consequent user experience is that when the user tabs to the datetimepicker control it appears as if no control on the form ...more >>

I am trying to unit test a control that uses a background worker component and have discovered that the RunWorkerCompleted event does not fire in this scenario. The documentation doesn't say anything about this behavior, and I was wondering if anyone here could tell me why the RunWorkerComplet...more >>

Is there any textbox control can display tree-based XML document under Win-Form Application? ...more >>

Hi, Im using VS 2005 and winforms I need to select a row in the datagridview, but clicking the enter key, because our customer says that for him is more simple to use the enter key instead the mouse The problem is to find the event that I need, is an event to fire this? Regards Julio...more >>

Hi ALL, I have created a App to select color. but when I want to create ColorDialog instance, It says: The type or namespace name'ColorDialog' could not be found (are you missing a using directive or an assembly reference) I have checked the DLL reference directory.It is correct. what is...more >>

Hi all, My situation is a bit more complex then my example here, but if I can figure this out then the rest should fall into place. Thanks in advance! Example: MyUserControl contains a textbox. MyForm contains MyUserControl and a Label. When the user navigates to the textbox I w...more >>

Is there an easy way to detect when someone has pasted text into a textbox? ...more >>

Hi, I have created a grid which is totally table driven. All the required information(column info, control info etc) are obtained from the database tables. Is it possible to handle the events for the dynamically generated controls within the grid? Thanks, Vishal *** Sent via Develop...more >>

This is a repost of a question I posted to the codeproject.com forums, but got no responses: http://www.codeproject.com/script/comments/forums.asp?msg=1872655&forumid=1650#xx1872655xx I forgot to mention in the above post that I am using Managed C++ (Visual Studio .NET 2003 SP1) / .NET Framewo...more >>

Hi all, right I'm busy on an enterprise project where we are moving to a .net smart client and first o the joy or so i thought...finding a tutorial on smart clients or going through msdn is a nightmare, i wrote an application 2 years back in c# that used the updater application block and what a...more >>

Hi - I am communicating with my UI thread using the following technique. This has appalled one of my co-workers ;) - any comments about it's brilliantness or lack thereof welcome..... two threads: 1) UI thread 2) Worker thread - something happens in the worker thread - I need to upda...more >>

Hello There. I've written an mdi app that lays-out the windows forms on any western language without a problem. However when I run the app an a Chinese OS (with exactly the same screen settings 1024x786) the form appears to have less pixels and does not resize correct. Infact the number ...more >>

HI, there, I am developing the desktop application using VB 6 as well as VB.Net. I have noticed one significant difference. A created an empty windows app in VB contsing of a single form and there is no coding and any control on it. When I executed the EXE, it consumed 983KB of memory...more >>

I am trying to create a label designer where I display a list of fields from a table and have the user drag them to the workarea will look like a label and then have the ability to move the fields around and resize them etc. I just want to get an idea on how to start. Bill ...more >>

I'm building a UserControl that contains a number of other controls that it creates and lays out at runtime. I've been messing about quite a bit with containers and docking and anchoring, and I can't get it to do exactly what I want it to do. What I want it to do seems like it would be a prett...more >>

Hi I have a vs2003 database app that use non-bound infragistics controls and all the plumbing is done in code. This works fine in vs2005. After importing to vs2005 via the built-in conversion wizard the application doe snot show any data instead all fields display the test 'System.Data....more >>

Hello, I'm trying to do a 3 tiers application (data access layer and business layer) with a winforms application. I start from Microsoft sample for ASP.NET I added a dataset to my project, the name of this is "Adventure" When I try to add : using AventureTableAdapters I receive an error...more >>

Is it possible to do away with the "selected" appearance of an item in a CheckedListBox (v1.1)? When I click an item, its background turns blue and its text turns white. I want the checkbox to toggle (which it currently does), but I don't want the list item to appear "selected". TIA Jared ...more >>

Having come from a VB6 background I liked to prefix all my control names with txt, cmd, btn etc. What is the accepted standard for Windows forms controls. I have been looking and looking for MS standards and can't find any. Bill ...more >>

Hi folks, I need to hide the prompt characters not only "OnLeave" but also "OnFocus"! i.e., if the control has got the focus, I need to hide the "Prompt Characters" too. Any help would be highly appreciated, Cheers, Mehdi ...more >>

This may be a stupid question, but I have VS2005 Pro, on Windows XP SP2, IE7, and in my toolbox in VS2005 there is no WebBrowser control, but there is a WebControl that is disabled. In my references I have System.Web, System.Windows.Forms, SHDocVw. Why is it not possible for me to add a webbro...more >>

Hi, everyone. I ran into an UI freeze issue with threading and simplied the problem down to the following sample code. The logic is as follows: 1. The main UI thread creates a non-UI STA thread(m_MainThread). 2. Then the non-UI thread runs and creates derived winform and holds a reference...more >>

Hi There, I have 2 forms and I need to execute a subroutine on formA from FormB passing specific parameters. Can this be done using VB.NET? I would prefer not to use a global function. Just something local to 2 forms. Thanks, Kevin. ...more >>

Dear, As following sample, if the Clickonce application launched within HTTP onload event , it seems not work. But if it called from onclick event, everything is just fine. I have already turned off IE Popup-blocker in IE7. Thanks a lot ex: <html> <head> <script language="javascript...more >>

Hi All, I am new to .Net and Compact Framework. So I have a really basic question for you all. I am building an application in C# for Windows Mobile 5.0 in VS2005 CF2.0 I would like this application to have some customizable features with out having to recompile. ...more >>

try to remove unwanted items but each time error 0x8050800f have all updates for windows defender...more >>

Hi, I'm having weird problems with Valadating Events. I have a number of countrols that handle their own Valadating events in to perform data validation. I also have a Custom control that contains Add, Edit, Delete, Save and Cancel buttons. The Causes validation property for this control...more >>

In the 'good old days' of vb6, labels had a 'BackStyle' property - you could set them Opaque or Transparent. I have a need for the Transparent attribute - - in VB.Net (2005), how can this be accomplished? ...more >>

I'm trying to cache a user object and gain access to it from a mutlipe forms. I have created a base class that all forms will inherit from. In this base class, I have a propery to a User class which I want to cache and reuse on all other forms so that I don't need to retrieve the user data...more >>

Hi: Once your in an error state (icon is blinking) form won't respond to any events until error is corrected. I would like to allow user to press a cancel button to override error and close form. How do you do that? Thanks, Charlie ...more >>

I have a user control with a datagrid in it. Here is what I would like to do * As the width of the datagrid grows or shrinks, have the user control adjust so that it always looks full in the user control with no scrolls. The datagrid's columns can be hidden or shown at run time, so I canno...more >>

This is a very basic question here. I must be missing something here. At run time, I am trying to set the text of the label control bold. lblMyLabel.Font.Bold = true; does not work since it's read only (why why why why why). Thank you. ...more >>

I have a question regarding versioning with a Smart Client and a Web Service. If we deploy an updated web service for some reason (say we rearrange the parameters on a function call, or added a new one) before we deploy the updated smart client, when the smart client attempts to call th...more >>

Hi, I am looking at a problem where i need to create a menu in which the child-items (the items in the dropdown) do not have the area for icons/ images. If you look at an xp-style menu(in a word document) or the default working of the class System.Windows.Forms.Menustrip, the menu dropdown ...more >>

Hi, is there no MS Flexgrid control in Windows Forms? I tried using the MS Flexgrid version 6 and got a license error... How do I use such a flexible grid in Windows Forms please? thanks Philip...more >>