I've just created a fairly routine grid but I have a problem that seems to be caused by the query. The query is a Left outer join consisting of 5 fields and the last two are frequently Null. The configuration of the grid is fairly routine and I've done it like this dozens of times - create a...more >>

hi, in our project there are a lot of forms..and in each form we used keydown event for shortcuts..for example we uses F2 to call save function ,and f3 to call close form function..but each forms' save function perform different tasks... is there a way providing us not to write keydown event c...more >>

I have a main form with a panel in which loads other forms. How can I let the forms loaded into panels modify properties of the main form? If I use: FrmMain.Text = "Whatever" from my panel form, I get the error: "Reference to a non-shared member requires an object reference.". Do I need...more >>

This is my first shot at a Winforms application in dot net. This application is mainly going to run unattended but is using a form to display current activity of the background processing. In VB6, I could set the startup to be Sub Main and then call frmMain.Show and the program would continue pr...more >>

I have a user control (inheriting from System.Windows.Forms.UserControl) with a button on it. I've added the control to the toolbox and have dragged it onto a form from another project. How can I capture the click event of the button in the parent form? Currently nothing happens when I clic...more >>

I would like to know if there is any documentation on how you can create, what I am calling a "ToolBar Application". An application like the Google or Windows Media Player bars that can sit in the TaskBar as ToolBars. I want to be able to right click on the TaskBar and select ToolBars and se...more >>

I'm looking for a way to wrap a text in Winforms DataGrid header (see below). I know it can be done to the cells in the grid by overriding the paint method but i can't seem to find a similar way to handle the column headers. Any help would be much appreciated. ex: _______________________ ...more >>

Hi All, I have an event handler on the UI thread containing the following lines of code: statusBar1.Text = e.msg; System.Diagnostics.Debug.WriteLine(e.msg); This is then called repeatedly from the worker thread as it reads lines from an NNTP server. The first few thousand calls are wr...more >>

HI, I am have attached DataGrid to DataSets. When I try to hit delete key, and then closing form gives me following error message Cannot access a disposed object name "DataGridTextBox" Object name "DataGridTextBox" . Details ----------------------------------------------------------...more >>

Custom rendered controls in a DataGrid? Is it possible to have a custom control column i a datagrid that render html (richtext and images) without moving to that column.? Thanks in advance! ...more >>

Hi, I have a grid which I'm entering data into and I'm looking for a way to do the following: By default, the active cell is NOT in edit mode (the cell is marked but without curser inside). I want that once the user click on any key, we change the cell to be in edit mode and add the first k...more >>

Hello, I hope if anybody could help me in this situation: I have a Dataset that I fill using some sort of Business Objects Class from Oracle 8i (using OLEDB NOT ORACLE Client) and there is None English Characters (Varchar2) Esp. Arabic charset. so, when i fill the dataset in the datagrid (W...more >>

I'm trying to use a treeview for navigation in my windows forms app. How do I find the currently selected node? If I use Treeview.SelectedNode.Index it doesn't tell me where in the hierarchy the node is so I get the same number more than once. ...more >>

I've created a base form that I want other forms to visually inherit from. I've created the base project, added a form, thrown some buttons on it and recompiled it as a class library. I then added another project to the solution. I added and inherited form. In the designer it looks great. H...more >>

Hi All, I have these two lines of code in an event handler: statusBar1.Text = e.msg; System.Diagnostics.Debug.WriteLine(e.msg); For the first twothousand or so events both lines work, but after a while the status bar text is not updating, though I can see the e.msg text in the debug outp...more >>

MAIN FORM: In my main form I have a treeview control docked on the left and a panel control filling the rest of the form. USER CONTROLS: I am constructing separate user controls to be displayed within the content area of the form when a tree node is clicked. Each user control has a panel cont...more >>

Hi! I am new to Windows Forms, but battle-scarred in WIN32 API Windows. I am developing a forms application that needs to save the users settings (DB settings, profile selections, etc). I am looking for the best place/way to store these settings by user. The appconfig protocol prevents t...more >>

I have been trying to follow the Building an N-Tier Application in .NET Technical Article that Paul Sheriff wrote. I am having trouble, however, with one particular aspect and I was wondering if you could help me. The problem centers around bound controls on the Client application. If you ...more >>

Hello All, I have a windows application where I am running a bit of code in a module and updating a multi-lined textbox control on a form for each line of code executed. example: purged old records adding new records updating tables with new record information etc. This is working w...more >>

Dear All, I am creating my startup Form in a new thread the following way... Thread oFormThread = new Thread(new ThreadStart(AddFormInThread)); AddFormInThread { Application.ThreadException += new ThreadExceptionEventHandler(OnFormThreadException); oHiddenForm = new frmStartup(this); ...more >>

I use compress byte arrays for sending data from my client applications to my web service. It has always confused me when folks talk about converting byte arrays to base 64 since I have never found this necessary. Can someone please explain to me the difference between sending a regular byte...more >>

I am trying to create a grid-like control containg a header for column headings and a body for row data. To do this I inherit the header and body from ScrollableControl and have synchronised the scrolling between them such that scrolling the body horizontally will also scroll the header. ...more >>