Hi all, I am building a tool and one of the things that I want to do is allow users to select a directory to set a path. Do I have to use the gimpy .NET 1.1 FolderBrowserDialog or is there something more similar to the OpenFileDialog format. I would prefer that my dialog for selecting files...more >>

Hi, I'm having problems binding an array of objects to a listbox. The objects are from a webservices class running on our web server. The array is coming from the website fine, and the data is binding ok to the listbox, but when I run the program, the listbox just comes up with the name of the ...more >>

Hi again, in the designer, I set windowstate = minimized, but when I start the app - the form is the startup object - the form is first shown in restored state, then minimized immediatelly. How can I prevent it from being shown in restored state first? Another problem: In it's resize event,...more >>

Hi, The format of vdproj files looks like good old ini files. Where can I find any documentation that tells me what the line item options are ? And is there an editor that works on these files directly ? The SDK section on the msi seems pitched at ground up deployment software developmen...more >>

All - I am trying to name the column headers of a Component One Flex. What I want to do is to name it much like the column names you'd find in Excel: A,B, C.... AA, AB, AC and so on. I am trying this: For c = 1 To flex.Cols.Count - 1 Dim hdr As String = String.Format("{0}", CChar("A"c + c -...more >>

I'm experimenting with a WinForms peer-to-peer .NET Remoting project. Each of the forms exports an object that can put messages in a RichTextBox, using SelectionText. The remote "client" form calls its proxied version of this object, to put text in the "server's" RichTextBox. Now, the remote ...more >>

Hi All, Does anyone know of a reference for adding panels with there own binding contexts and keeping them synchronized with the form's bindingcontext? Thanks, Carl...more >>

In the following snippet if an error occurs after XmLTextWriter is instantiated I will lose the content of my Xml file! // validation ... // writing data into dataset dataSet.AcceptChanges(); XmlTextWriter xmlWriter = new XmlTextWriter("myFile.xml", Encoding.UTF8); throw new...more >>

Hello, When I click on a column header of a dataview, it sorts fine but the new view is not reflected in the dataview. For example: before sorting, ID of row[0] was 1 after sorting this row moves down the grid but I still get 1 for row[0]. Any c...more >>

Hello I have a listbox on a winform. Based on some event at run time I want to change the color of a row in the listbox. I will appreciate if anyone can give me any idea how to do that. Thanks...more >>

If I try to start my form on a new thread it doesn't stay up. You see it appear on the screen but then it disappears after just a second or so. How do you go about putting a form on another thread without that happening? Any help is greatly appreciated. Thanks, Brandon ...more >>

I have a form (that I open with ShowDialog) which I wish to close either with a button or through my program (after an event occurs in the main program). How do I do it? Close doesn't work and I'm fairly sure that simply calling the click event won't work. It must be easy .... Thanks ...more >>

How to see if the control is a "container" control ? Are there any other "container" controls except "GroupBox" and "Panel" ? Thanks! ...more >>

How do you pass parameters to the contructor using create instance Type t = Type.GetType("MyApp.Class1"); object obj = Activator.CreateInstance(t); now all contructors for Class1 take at least one parameter public class Class1 { public Class1(Employee emp) { } } s...more >>

Hello, I am creating an application using C# .NET. In the main form is has got a few labels, panels, buttons and treeView. While changing size of window (by handling right-bottom corner), everything is flickering in horrible way. Each component is flickering in its own way. Of course, I ...more >>

I want to draw a rounded rectangle on a windows form's surface. Since there don't seem to be any drawing shape controls provided, can I achieve the same effect by adding some dummy control on the form to look like a rounded rectangle? Or is my only option to get into custom controls and OnPain...more >>

I have a reference to an image via an http url. How do I save (cache) that image to a local file from a windows forms application ? ...more >>

How do I use the .Net 1.1 System.DateTime so that it will parse the string "Thu, 05 May 2005 14:50:52 EDT" Currently System.DateTime.Parse("Thu, 05 May 2005 14:50:52 EDT") Fails with a FormatException: The string was not recognized as a valid DateTime. There is a unknown word starting at...more >>

I have windows form with the few TextBox controls. Under certain conditions I disable or enable this controls by setting Enable property to true or false: For example: this.m_txtIP.Enabled = false ; The controller become disabled, and I can't enter any data. The problem is that the backgr...more >>

Does anyone know how to disable "Print progress" popup dialog when previewing w/ the PrintPreviewDialog, or better yet the PrintPreviewControl? I've tried setting the printDocument's printController to a standard and preview printController, but the status box still appears. Thanks, Davis ...more >>

Is it safe to create a form in a worker thread and then have the UI thread display and take control of it? I would think that this would not be safe. However, .net 2.0 does not give me a cross threading error and it works consistently with all of my forms except for one....more >>

Hi, I have a windows forms application, developed under .Net 2003. This application mainly accesses a remote Oracle database to generate reports. To be able to run my application, I have to install it on every PC that needs to use it, along with the .Net framework 1.1 and all the libraries it...more >>

Hi, I want to fill a datagrid from a separate thread. How i use the invoke method? thanks ...more >>

Hello I am Using Following Code to Open Ex cel File From my C# Windows based Application. myProcess = new System.Diagnostics.Process(); myProcess.StartInfo.FileName = strFilePath; myProcess.StartInfo.UseShellExecute = true; myProcess.Start(); This Works Fine when I Open the File FirstTim...more >>

I posted this a while back, but thought I would give this another go: Have a look at the code below. It's a really simple example where I have added two controls to a form, a textbox and a combo box. Both add owner drawn context menus to the controls, but the the custom drawn context menu item...more >>

Hi, I have a DataGrid. I can select multiple rows and want to know which rows are selected. How do I do this? Thanks in advance!!! Cindy...more >>

Hey all - thanks in advance for the help. I am messing around with layout management and have a naming issue I cannot seem to track down. I am handling the layout event (Layout()) for my controls and, when checking the Name property for any of the children passed in (via e.AffectedControl.C...more >>

I am trying to hide >> JUST << the Maximize button. I want the Minimize and Close to still show up and work. This is what I tried. The call to GetWindowLong() always returns Zero as the value. Thanks, Dave // ------------------------------------------ [DllImport("user32.dll")] s...more >>

I have a windows form that display's telephone numbers and dates. I am using C#. I cannot find a way to format a phone number "(xxx) yyy-zzzz". Can someone point me in the right direction!! -- Norm Bohana...more >>

Can transparency support be added to a WinForms control that does not natively support it? I'd like to add a TrackBar control to my Windows form. But the form uses a gradient background, so I can't simply set the BackColor property of the TrackBar to match the form. I have tried inheriting ...more >>

Hi, There seems to be a problem with mouse event handling in controls located on MDI child forms in .net v1.1. When the control is first made visible it receives the OnMouse Enter and OnMouseLeave events. If the child form is then hidden and re-shown only the OnMouseEnter event fires - thereaf...more >>

Hi, I had written a TextBox Column by extending the DataGridTextBoxColumn. I need to enable a feature in the TextBoxColumn. The feature is to allow the multiline in the textbox column. So i kept the multiline , wordwrap,scrollbars properties of the textbox to true. It's working fine. I handle...more >>

Hello I read many security articles and most of them are targeted at webbased apps. To what I learnt, .net supports 2 types of security, Role Based & Code Based. What I wanna do is, I want to retreive the username of the current user. Also as to which groups they belong to. Is the...more >>

Hello, I am working on a big project with multiple work threads and one UI thread, In the UI thread i have some forms that use timers. After a time of working on the application it hangs in 100% cpu. the timer is used as a switch when an operation is needed meaning when a button is clicked the...more >>

Hi All!! I'm troubled with Combo Box.(WinForm) I'am Coding Public p_frm As Form9 p_frm.ComboBox2.Items.Add(MonthCalendar1.SelectionStart.ToShortDateString().Replace("-", "")) I want to select a last-Added-Item!! In VB6.0,I guess existing NewIndex Property.. How can I solve a prob...more >>

Hi I have a datgrid and when I click the toolbar or menu which has a save action, the last change is ignored. Is there anyway to force the datagrid to save the current record? thanks jonathyan -- =============== Jonathan Crawford 01273 440018 07799 068570 fax 01273 380221 jc@...more >>

I'm writing a windows forms application which receives events from an external application, and then responds to those events by modifying things on the form. It's capturing the event but on trying to modify the controls on the form I'm getting the error: [System.InvalidOperationException] ...more >>

We have a situation where one windows form application needs to invoke forms in another windows form application. Is it possible for the output of a windows forms application to be a DLL ? ...more >>

I have a editable DataGrid which is bound to a datatable.I use functionkeys to handle save and other functionality. IssueDescription: When i change a cell and with out moving away from that cell if hit any function key. the datatable doesn't have any modifed rows, it think no data has changed...more >>

I have created several UserControls with transparent backgrounds. To enable transparency, I've added the following statement to the constructor for each control: this.SetStyle(ControlStyles.SupportsTransparentBackColor, true); On most of the controls, transpanency works fine. But on a ...more >>

Hi there, I made a custom drawn ComboBox. The DrawItem event handler is (explanation follows) <code> private void OnDrawItem ( object sender, System.Windows.Forms.DrawItemEventArgs e ) { ComboBox theCombo = (ComboBox) sender; DataRowView drv = (DataRowView) theCombo.Items[...more >>

How do you show only the top n rows of a datable in a datagrid without actually removing the rows from the datatable. Is there the equivalent of the SQL TOP command for filtering the rows? Thanks, Oldman...more >>

I have a simple problem I have a user control that I added to a main form. When I click a button in the user control I want to change the text of a label that is in the main form. This is the code in the user control: private void button1_Click(object sender, System.EventArgs e) { Fo...more >>

We are building a distributed vb.net winform application. We don't want to add the user to a NT group that has sql permissions as the user will be able to open query analayzer and view/execute sps. Looking into impersonating a user that does have SQL permissions when the application is runnin...more >>

Hi, I have developed an application vb.net. I have a tab control placed on a form(Base form). On click of each tab different forms are dispalayed in front of base form. I want to set the location of base form and display form such as it should look like a single form. For this I...more >>

Hi I'm trying to localize my App. My problem is, I have a Button which switch the text (Start/Stop) How can i Localize this? Because if I want to add an string to Formxxx.resx file I get the Error that this file belongs to another (to the Formxxx.cs ) and added strings probably get lost. ...more >>

I'm receiving some text from a web service which contains HTML tags, but I want to display this in a Rich Client Windows Form. Is there any easy way to do this ? The only way I can see currently is some complex processing which will convert the html tags to the appropriate RichTextBox selectio...more >>

All, New to the Data grid control. i have to display the data in reverse. Column headers as row headers and row data as column data. Is there any flag besed setting i can use ? Appreciate any suggestions/help. Thanks VR ...more >>

Hi, I have an app developed using Windows Forms. I need to save the size that the user resizes the app to, so as to open the app window to that size when the user restarts the app. I also need to save the desktop location of the app, so as to display the app window at that location when the...more >>

hi: is there a way to have the helpButton appear on the form title bar and yet still keep the min and max buttons? the documentation states that both min & max properties should be set to false inotder for the helpButton to appear. thanks......more >>

Hi everyone! I have a WindowsForms application which has a form that loads the Web Browser control using interop. Is there any way to prevent the program from crashing when the shdocvw.dll (installed by IE) is corruputed? Where could I place a try catch statement to handle this? Th...more >>

Hi, How can I autoHide a Toolbar in vb.net? Thanks in advance, -RbanBph...more >>

How i do with vb.net?? I find some code in visual basic 6.0... but not in vb.bet thanks Luca...more >>

Hello Sir, This is Chandra and Working as Software Engineer. I got a really weird problem with ComboBoxes. I have set the ComboBox DroppedDown Property to true. Now the actual problem is When the ComboBox DroppedDown is Shown I have to actually click twice to get out of the form or need t...more >>

Hi, I would like to achieve automatic logout after a certain period time with no activity. I made an public variable (e.g IsAcccessGranted ) and set it from a database. I want to make a logged-in user log-out when He does not do any action with the application. Is there anyway good way t...more >>

Hi All I Have a windows from with a toolbar with ImageList set and ImageIndex is set for every button, IN normal state everything is displayed as it should be. But when I add the line Application.EnableVisualStyles(); The images on the toolbar are not displayed. Any help would be ...more >>

Hi I have a button in a data grid that opens a frm and puts some data into it. I wanted to stop the user clicking the row below and opening another copy of the form. Dialogue won't work as it won't allow me to put the data in the rich text box of the newe form I tried declaring the new ...more >>

Hi I have a data grid with a fdata button which has three event handlers I set the event handlers in code when I reset the table style. This works perfectly the first time. Unfortunately I have to reset the tablestyles regularly. Each time this happens something goes wrong and and HandleCell...more >>

Hello, I have an error message when trying to call a child form from a Mdi child form. I am trying to keep all forms within the same mdiParent form. I get the error: An unhandled exception of type 'System.ArgumentException' occurred in system.windows.forms.dll Additional informatio...more >>

Hi, We're developing for touchscreen, and created a homegrown keyboard that receives events based on what's clicked on the screen. Now we want to pass on this keycode to another form/field Can we raise our own keydown events(having trouble trying to arrange this) that the other form/field c...more >>

Im am using the timer control in a C# application and seem to be getting some strange results relating to the timer event fire. So whats the minimum practicle time for the fire? Is 20 milliseconds practicle? Failing that is there any way to measure when the event fires compared to when it...more >>

Hi. I'm having trouble with my ListBox. This is what I want to do. I have two listboxes. When I click on an item in the first one I want the second one to fill up with values depending on which item was clicked in the first listbox. The problem is that ListBox1_SelectedIndexChanged fires whe...more >>