Hello, I have a combo box that shows a list of items from a SQL Database. I don't want the users to edit the entries, I have set the CombBoxStyle to DrowpDownList, but when I do this everytime I open up the Windows Form where the combo box resides in no item is selected. How can I set up ...more >>

I'm using an .xsd file in my windows application using VS2005 Beta2. Can I change the table name at runtime to another table name with the same schema in the same database? ...more >>

Hello all, I'm trying to use a TreeView control for the first time and am having a problem getting it to work. I have, essentially, the following: TreeView MyTreeControl = new TreeView(); MyTreeControl.Nodes.Add("test"); The "test" node never shows up, even when I minimize and resize to ...more >>

Hi, I'm building a Windows Forms application that parses a variety of web pages. The web page structure generally includes a search page with form fields and a "submit" button, and clicking submit loads the results page we're interested in parsing. Thanks to some help from here and the M...more >>

Hi, I'm trying to bind a custom collection class to a data grid, following the guidelines from the article http://msdn.microsoft.com/msdnmag/issues/05/08/CollectionsandDataBinding/default.aspx. The problem is the article is in VisualBasic. I already get the collection to be recognized as ...more >>

Can any one tell me if it is possible for a windows forms VB program to detect if any Internet Explorer windows are open? I wish to provide a message informing the user that they must close all Browser windows before they can continue NOTE: These windows will not have been spawned by my progra...more >>

I have the following code: sendToAgent.DataSource = someDataSet.Tables[0]; someListBox.DisplayMember = "AGENTNAME"; someListBox.ValueMember = "AGENTID"; someListBox.Tag = "USERNAME"; What I want to do is iterate through the selected values and retrieve the displaymember, valuemembe...more >>

This is the code to navigate object flags = (object)0; object targetFrameName = (object)""; object postData = (object)""; object headers = (object)""; string url = "http://000.000.000.000/RemoteAPI.dll/Get?ID=100"; webControl.Navigate(url, ref flags, ref targetFrameName, ref postData, r...more >>

hi all, In my windows form, form_keyup event is firing if there is no controls in form. If i place any control like textbox,then its not getting fired. How can i fire keyup event of a form with more than 10 textboxes. Gomathi ...more >>

I would like to know the state of the keyboard. more precisely I would like to know if the 'SPACE' key is pressed or not. how od I do that? -- Regards, Lloyd Dupont NovaMind development team NovaMind Software Mind Mapping Software <www.nova-mind.com> ...more >>

I have a tab control to get a data about public appeals. One tabpage get a complainer data and the other tabpage get a complain data. By default (English language) the visual studio create the tabpage in the left side on the tab control I want to know if I can change the side of the tabpage in...more >>

I'm somewhat of a noob when it comes to WinForm development (all of my work is within ASP.NET, serivces, and libraries). Currently in the design/scope stage of a pet project, I'm looking for a bit of advice or direction as to the best approach. The app is essentially a research & analysis to...more >>

I want to create two executable applications, AppA and AppB. AppA uses an instance of the Process class to launch AppB, via the Process.Start() method. AppB has a WndProc but does not display a window. Later, AppA sends a message to AppB telling it to shut down. AppB includes an event hand...more >>

Hi guys! I've an event that belongs to a ToolBar: Private Sub ToolBar1_ButtonClick(ByVal sender As Object, ByVal e As System.Windows.Forms.ToolBarButtonClickEventArgs) Handles ToolBar1.ButtonClick ... End Sub I'd like to know how can I raise that event manually, throught a ...more >>

I'm getting an intermittant null reference expception in ListView.InsertItem. Since the top of the call stack is in winforms code, I am not able to tell what is actually null. Here's the top of the stack: System.NullReferenceException: Object reference not set to an instance of an object. ...more >>

Hi, I'm having the following situation: - A class clsFournisseur with public property's which raise a MyPropertyChanged-event in the Set-method for each Property. Public Event NomChanged As EventHandler Public Property Nom() As String Get Re...more >>

I have an email that has a file attached to it. If I save the file and drag the file from Windows Explorer to my form, I get a DragDrop event with data type of FileDrop. If I drag the file directly from the opened email, I get a DragDrop event with the data type of TEXT. What is worse, it app...more >>

Hi, Is there actually a way to get ALL the Controls on a Form? While using the ControlCollection, it only returns the Controls that are directly on the Form, not the controls that are on a (TableLayout)Panel etc. I never found something like that, but it just would be nice in my opinion :-)...more >>

Hi, Is it always a good idea to have a Interface. Does it have any performance issues. I am referring to Framework 2.0 Beta, Visual Basic 2005. John. ...more >>

Hi all, I have quite some design experience on other platforms and especially with web applications. Now I'm about to design a .NET application and am a little stuck as I am trying to apply my "habits" of separating model, view and controller. Either that is the totally wrong approach or I am...more >>

Is there a way to automatically fill the last column width of a listview control? ...more >>

Hi, I want to display help files in my windows application. Please tell me how to display .chm files through my C# code. Thx in advance. Prasad....more >>

Hi, I have two list boxes of the same size and the same number of items in them. The number of items is big, so to accommodate them the list boxes display vertical scroll bars. I want to synchronize the vertical scrolling of these two list boxes, so when one of them is scrolled by the user...more >>

Hello, Why don't forms and panels respond to help requests? I have a basic form showing the Help button in the title bar, a HelpProvider, a panel and a button; and the panel and button are identically configured to show help on the HelpProvider. When I use the Help button and click on the...more >>

I am having exactly the same problem, made worse by the fact that = MeasureString introduces a very significant slowdown. Can anyone help? Best wishes, Alex. markusszil (anonymous@discussions.microsoft.com) wrote in = microsoft.public.dotnet.general: > Hello all, >=20 > I have a fairly ...more >>

I currently have an aspx page that contains a datagrid object and every time the page goes through its lifecycle the Page_Load event gets called twice. I've checked my code and I'm not manually calling it anywhere so the server must be doing it. Can anybody tell me why? and is it possible to sto...more >>

I have 2 ComboBoxes on a form bound to the same DataSet using a New BindingContext for the second one. Both ComboBoxes need to have their SelectedValue bound to a different DataSet . The first one works properly, but the second one will not select any value. I am pretty sure that this has ...more >>

Hi all, I have some custom collections (ArrayList of custom Objects) and I want to display them using typical Windows form controls (DataGrid, Combo). What should I do to expose them as valid datasources to these controls? What if I want that these collections work with Visual Studio on des...more >>

I need to edit the local security policy of Windows 2000 machines to disable access for the local Administrator account. How can I programmaticly edit the local security policy using vb.Net? I have looked at using Group Policy, but I must specify each machine name before the account name to ...more >>

Hi, I have couple of listboxes and a couple of combo box on a form. The listboxes are databound. I am trying to clear the selection of the listboxes if they are not selected by using ListBox.ClearSelected() but in vain. The following lines are in the constructor of the form. Listbox...more >>

I'm new to .NET and somewhat disappointed in the amount of manual work required to get a simple Win Forms database application built. I'm used to working with a development environment called "Clarion" (that I'm guessing you've never heard of), which can take you from data dictionary to fully ...more >>

I have a combobox that displays dates. They display in a long form, but I would like mm/dd/yyyy. If this were a TextBox, then I would use the Format() method of the Binding. The ComboBox is getting bound like this... cbDate.DataSource = theTable cbDate.DisplayMember = "theDate" cbDate.Va...more >>

Hi all, I cannot remember where I read the article, however I read one that showed me how to overide the paint function of a datagrid so that I could highlight certain cells in different colours. This works great however if I sort the datagrid by a particular column the rows do not get upda...more >>

Dear all, Can i add row in datagrid after i bind a dataset to the datagrid...more >>

Can vb.net export data to excel file and any license requirement?...more >>

Hello, The error tells me; --------------------------- Procedure 'usp_sequ_sel' expects parameter '@sqfkJob', which was not supplied. --------------------------- But I do supply it!! What am I missing?? Here is my Stored Procdure [usp_sequ_sel] \\ CREATE PROCEDURE dbo.usp_sequ_sel...more >>

Hi everybody: I am adding several forms into a panel to give MDI appearance to my panel.. Though the forms inside my panel looks fine, I have three problems: 1. The focused form does have the title bar activated (it is gray, like the inactive forms) 2. The only way to bring to front a form...more >>

The SplitContainer divides the space in two, either horizontally or vertically. I'd like to divide the space in four. By adding more splitters, the problem is that they don't keep in synch automatically. It'd be nice if when the mouse hovers in the center of the four regions a cross movement ic...more >>

If I have a second form that is a mdichild, let's say frm2 and I want to update a textbox control pragmatically... In my MDI parent, I open 5 instances Dim f as new frm2 private sub OpenForm() for i = 0 to 4 f = new frm2 f.mdiparent = me f.show end sub Now, from my parent, I want ...more >>

Hi, I have an application which shows forms on two different independant screens. The Windows desktop is spread across these screens. The forms are all set to manual positioning, and so to show a form on the second screen, I simply set the coordinates to be on the second screen and that is...more >>

Hi! I created a FindDialog for RichTextBox. I have 2 problem with it: - when I ShowDialog() my FindDialog, it got the focus and the RichTextBox stop displaying its current selection (it apparently need the focus to draw it), so when the user click "Find Next" I select the next match, but ...more >>

Hi- I have two combobox controls (among other controls) that are all bound to dataset0 from the "Main" table. Combobox2 is bound to a column that contains a FK (system_id) which corresponds to the PK from the "Systems" table. These combobox's also function as picklists and as such are fille...more >>

In a windows forms app how do you know a window is closing? There seems to be no event for this. I have timer object that appears to be firing after the window is closed (maybe) and I want to shut down and dispose the timer when the window closes....more >>

This code resets a form with two cbo's (comboBoxes) and one datagrid. The first cbo (cboSelection) selects a main table and filters the second cbo. The second cbo (cboView) selects the secondary table which determine the dataAdapter used to fill the dataGrid. Both cbo's are populated by filling ...more >>

I have a color in a bitmap from a screen capture. the color is defined in paintbrush with 6 numeric values. how to I convert this to rgb so I can assign it to some controls on a vb.net form? Thanks. -- moondaddy@nospam.nospam ...more >>

How do I evaluate, in c#, the amount of memory taken up by any given object ? ...more >>

I want to open a word document and display all the text in a windows forms. Like the Ms Word Viewer. Only for read it, no modify. I do not have problems opening and reading the document. The problem is display de text. I do it of the following form: Private Sub Form1_Load(ByVal sender As Obj...more >>

Hi I have two forms, Form1 and FormInfo. In FormInfo I override Close(), cancels and hides the form. However now Windows isn't able to close my app automatically when the user tries to close Windows while my app also is running. Can this be solved without abandoning overriding the form? ...more >>

what's the difference between the 2 following events: Form.Closed Form.FormClosed ?? -- NovaMind development team NovaMind Software Mind Mapping Software <www.nova-mind.com> ...more >>

Hi, I'm writing a C# application that uses Application.ThreadException to handle uncaught exceptions gracefully. However, I'm having a problem where it is failing to catch some exceptions, and I've determined this is because the event handler is becoming unwired: if I reinstall the handle...more >>

Hi, In my windows application i am creating a word document. Word document has some pictures in it. I want to convert document file to .chm file. Is there any class available in .Net to do this? Thx in advance. Prasad....more >>

Dear all, If i develop a windows based application VB.NET , it need to export some excel and word document from the VB.NET application. such as excel report or word report and it need to import the reference of office component to do that, is it ok to deploy the windows application together w...more >>

Hi, I have an MDI container form (Form1) that has a MenuStrip and a ToolStrip embedded in a ToolStripContainer. Form1.MainMenuStrip is set to MenuStrip1. The "Content" part has a ToolStripPanel docked to Fill the entire space. I guess this is a pretty normal setup. The problem is that all...more >>

For the first run of my application, the configuration dialog needs to be displayed. I have tried loading the config dialog in the form load, but the form is not loaded yet. What is the easiest way to display the config dialog? Sam...more >>

I have a C# DLL that loads a bitmap object from a PNG file. Thanks to Bob Powell's advice i managed to access the Bitmap data using the lockbits method and then call the Windows API function CreateBitmap successfully. Then the DLL provides a COM interface which returns the handle to the bitmap...more >>

Hello, In my app I have a UI control that responds to MouseUp events and opens a FileDialog. If an item in the dialog is double-clicked (instead of clicking on it then clicking OK) AND that item is over my UI control, the final MouseUp of the double-click is registered by my control and it...more >>

Hi all. What's the best way to detect if the machine running my app is connected to the Net? I don't need any network/dns info, just "connected? true/false". Thanks!!...more >>

Hi all. How do I cutt, say, first 25 bytes from the stream? Any help would be greatly appreciated!!...more >>

Hi, I have an application which has browser control in it, i open this form and it does some automated steps and closes it self every thing wrok so far. Now wanted to open multiple instances of this form each of them running in its own thread. But when i try to create this form within newl...more >>

Hi , Is it possible to have Windows Forms in a Windows Service , I have tried to do it but the application always locked . Actually I am calling de .show method of the Form in the Onstart Event of the service . In the Microsoft documentation I can see that a windows service is a process ...more >>

Hello, Where can I find articles and/or an online tutorial on using NUnitForms for Windows forms? dbuchanan ...more >>

Hi all, I got a problem with binding an array of object with a combobox. Here is my code: public class Toto { public string Idr; public string Name; public Toto(string id, string name) { Idr = id; Name = name; } } .... and the ui part: Toto[] totoList = new ...more >>

I am writing some winform application in C#. I want my TextBox control have following properties: 1. accecpt inputing digits '0','1','2','3','4','5','6','7','8','9', and display those digits in TextBox.Text as expect 2. If the user input something other than digits such as 'n', TextBox.Text ...more >>

Hi, Could anybody provide good reason for me to load my windows forms exe into GAC and then use it as primary application location? Thanks, Leonid ...more >>

Does anybody know why some components like Microsoft.DirectX.AudioVideoPlayback.Audio rely on the Application.Run messaging system while other events in other classes dont? Anyone got a reasonable way of testing that using NUnit as well? Thanks in advance for any help offered. Jax ...more >>

Hi, I'm having some weird behaviour, and I can't find any solution to this. I made a UserControl (uclCommands) which contains a Toolbar (ToolBar1) with Modifiers = Public. I put this usercontrol on my form and call it Ucl1. In the Property Window in the Windows Forms Designer I change Ucl1....more >>