hi ng, I actually want to program an application whose main window contains a menu strip and a tree view control. In the main menu there are items I want to use for a context menu strip in the tree view but if I add a menu item from the main menu strip to a context menu it disappears from t...more >>

I've just started climbing the steep learning curve from VC6/MFC to Windows forms and C++/CLI. But I just can't find the documentation that describes the philosophy of what's going on. A simple example: I want to create a popup menu class that can be reused on multiple forms, and star...more >>

Hello, Is there an easy way to save the application ? for example : - Application position on the screen - Imagine if I have an "option" form How save and restore these informations ? Thanks, ...more >>

I'm trying to find a way to programatically open a combo box's drop down window. Any ideas?...more >>

I'm working on a windows forms application that has a wrapper around the main execution code (in Main) to report any unhandled exception through a custom dialog. This works fine on my machine but when I give it to a client the dialog doesn't appear but rather they are presented with a "Ignore...more >>

How can I pass the initial mouse click through to the dropdown control on a DataGridView? Currently, the user needs to click on it - I guess first to select, then again on it to see the dropdown choices (sometimes this requires several clicks). The CheckBox doesn't seem to have this issue - ...more >>

Hi I have put an splitter container in my form and have set its orientation property to horizontal The in the upper panel i have put a listbox wit dock property to fill . The problem is that when i move the splitter up and down the distance between the lower border of the listbox and the spl...more >>

I inherited a C# Windows app (.net 2.0) . There is a main form with a panel and menu. When the user selects a menu item, a usercontrol form is added to the panel and displayed. The User control forms have things like datagridview and command buttons, as well as a panel that gets loaded with...more >>

Hi I have a simple UserControl hosting a couple of other controls, the BorderStyle = BorderStyle.FixedSingle. All I want to do is change the border color of the control. Anyhow got an example on the best approach to do this. I tried the following which didn't make any difference: pr...more >>

Hi, this question must have been answered many times before, but I just can't find the answer in the groups. How can I determine when a Windows Form is displayed on-screen? When my application starts up I want to immediately display a "wizard" to guide the user, but when I tell the wizard for...more >>

Hi, all I have a question when I use form as MDIContainer when I move a MDIChild out of edge of MDIContainer, the Container's Scroll bar appear(yet "AutoScroll" property is "False"), and the Container's background image look like error!! How can I disable auto scroll of the Container or Ho...more >>

I know this has to be simple and I am missing something, but, I have a windows forms application. The forms are bound to an object. I want to be able to have the form open as readonly until an "Edit" button is pressed. After all of the edits are done, they can then click an "End Edit" but...more >>

I'd like to declare a class that inherits from the fontDialog class and adds a "Color..." button to the bottom of the dialog. However, fontDialog doesn't seem to have a "Controls" property according to the documentation. In this case how do I host the button?...more >>

I have a ListBox control which is not bounded to any data source automatically. How can I intercept the event of adding/removing items to it? - Tal ...more >>

hey if anyone has any ebook for vb.net kindly send me a copy.. Im badly in need of it to refer to some concepts on data access, storage and retrieval pradeep.mani@gmail.com is my email id bye Pradeep ...more >>

Hi, How can i put image as button in DataGridView column?...more >>

What is the correct way to paint custom caption in .NET and XP? I like the new custom caption in Office 2007, how do I do that? Kennedy ...more >>

I'm writing a Windows Forms app (connecting to SQL Server db) that will need to enable/disable access to various UI controls based on the particular user that is currently logged in. My question: What are some of the building blocks that I should look to use? E.g., how do I know who the cu...more >>

I neet to create a "Colored glass" effect, so I can cover a couple of buttons on my form with an opaque (semi-transparent) shape and some text. I tried the following: 1. Create a control that will support a transparent background and use ARGB colors to set an opacity for the background (or ...more >>

Hello All, I’m having a issue with the TabControl.SelectedTab.Name in the SelectedIndexChanged method. All I want to do is keep track of what tab the control is currently on. I have tried the following. I get an Index error or Object is not an instance of a Object error. Is there a work ar...more >>

I have a combobox that lists 3 columns of data. When a row is selected, I need to show 2 of those colums to the user. I would like to show this in the combobox, but the default ability doesn't allow this, I'm wondering how others have handled this in the past and what suggestions others might h...more >>

Hello, the following "fontDialog1.Color = Color.LimeGreen;" fails. - the selected color displayed when fontDialog1 is shown is black. It will work if I set the color to red, blue, etc but not LimeGreen. I noticed that this particular color doesn't reside in the color drop-down picke...more >>

Ok, I have a DataGridView, and I want to fill it with data from a stored procedure (which is on a SQL server express database). This procedure requires a parameter called "Country." The user selects the country from a ComboBox elsewhere on the form. All seems to be working fine except one thin...more >>

Hi, I have the following code to set the DataSource of a ComboBox to a certain table in an untyped DataSet, and I also want to set the DisplayMamaber of the ComboBox to a certain column: cmbID.DataSource = Me.Ds.Tables("Groups") Dim str As String = Me.Ds.Tables("Groups").Columns("Cust...more >>

In doing some development and testing I have found a curious issue with the use of Mnemonics and Accelerators that I would like some input on. If you create a form that has 2 buttons on it, one with text "&Button1" and one with "B&utton2" and set up event handlers for both you will see a curious...more >>

In DataGridView control I want to set the width of the border column, i.e., that column that borders the grid on the left. At run time the user can adjust its width, but is it possible to do it at design time? thanks -- dchman...more >>

Hi, I made a local report (add New item -> report) bound to a oleDB data source. I order to preview it, I made a form and added a ReportViewer control. But now I need to batch-print it without showing print dialog. Is it possible? Is it necessary to use the ReportViewer even if the user ...more >>

Does anyone know of a way to prevent images/cookies etc from being pulled via the new web browser control. Essentially what I am looking for is html rendering like what is done via outlook (it blocks images, etc) until you tell it that its ok to download them. Does anyone know of anything (b...more >>

Hello, I'd like check all the control on my tabcontrol (all tabpages) I tried this : foreach (Control oControl in this.Controls) { if (oControl.GetType() == typeof(TextBox)) { oControl.DataBindings.Clear(); }...more >>

Hello folks. I'm writing a Roguelike game in C#. It contains a RichTextBox which displays a map. The map is made up of multicolored ASCII art. Since this control is displaying a map I do not want a blinking cursor on it, so I set the Enabled property to false. Unfortunately this forces the c...more >>

Hi all, A problem occurs when I show a form (using method Show or Visible set to true). The form, when displayed is also activated and I do not want to. The property Form.ShowWithoutActivation returns false. How can I display my Form so that it does not activate when it is displayed ? ...more >>

I have the following code that creates a new appDomain and loads an exe using reflection. The problem I have is the exe file I pass in is still locked by the application. I have showcopyfiles = "true" and specified the locations for the appDomain to use. The shadowfiles and the original file is...more >>

I'm using a background worker component to load a large amount of data in the background so that the UI stays responsive and repaints. I disable the form set the Cursor to Hourglass, then call the BGWorker.StartAsync() method to load the data. Everything works, except that for some reason th...more >>

If I build a windows forms application using .Net 2.0 and SQL Express 2005 as the backend database (mdf file). Will the machine that runs the windows app need to have SQL Express 2005 installed? -- -Demetri...more >>

I've been fighting this for a solid 30 minutes now. When I change the value of a property outside of the grid, I can't get the grid to change the display. If I obscure the window behind another window and then return it to the top, the grid displays the proper value. I call Refresh() on the ...more >>

Hi, I created a local .rdlc report and a simple Data Source by wizard. Ad design time I went on 'Report' -> 'Data Sources...' menu and added my Data Source in my report. So I added the report viewer control in a form, set ProcessingMode to local and ReportPath with my report.rdlc. No...more >>

Hello NG, I want to draw a rectangle on my panel: Graphics g = panel1.CreateGraphics(); g.FillRectangle( ....... no problem. But if I put Form-Elements, like a button, on this panel, my rectangle is behind this button. But I want to render it in the front. What can I do to solve thi...more >>

Hai, I am working with windows forms in vb.net. i want to adjust window(form) size based on screen resolution of the system(Resolution is small and large).Is it possible to change .tell me some possible answer Regards shilpa...more >>

hi, im using visual basic 2005 express edition to create my windows application..the look of the button is not good..in the sense that..the look of the button that i get in visual studio 2005 is not present in visual basic 2005 express edition...is there a way to change the way the button looks...more >>

Hi everyone, I would appreciate any help concerning this threading issue. I am using the comm port, and receiving data from the comm port fine. I am updating the system.form controls, text boxes, using "begininvoke" and the updates occur, no problem. However after the update,, the form is a...more >>

Hi, my application needs to display a table of data that is organized by categories. Additionally, I'd like to display small graphs in a column for each row. Ideally, I'd like the table to have treeview functionality. Can this be done with standard WinForms controls? >From the research that...more >>

Hello, I have a control which utilizes the PrintPreviewControl class to provide a more powerful print preview than the provided PrintPreviewDialog class. I am having troubles when the default printer on the computer is a network printer which is not currently accessible (for example, on a ...more >>

Hello, The question I have below was originally posted to microsoft.public.dotnet.framework, as I mistakenly considered this a question of more general nature. However, the discussion there quickly turned into one that was very windows forms specific, and it seems there is some confusion as ...more >>

Hi, I am a developer in a company which makes a large scale .net windows application. Recently, my users have been complaining that after a period of inactivity of about 15-20 minutes, the next action that they perform takes 30+ seconds to execute. The same action normally would be done i...more >>

This article http://support.microsoft.com/kb/813827 describes how to set a longer timeout for IE. In the app we are developing, we want to see if the user has created the value mentioned in that article. I created the key/value on my machine, but when I try to get the value using the RegistryKe...more >>

VS2005 and I have a DataTable displayed in a DataGridView that needs custom sorting, with the DataSource of the grid set to the DataTable and the SortCompare event just won't fire. Then I found this in the docs "This event occurs only when the DataSource property is not set and the Virtual...more >>

Find angle between 2 points using 2d coordinates. I am trying to write a tool to find angle between 2 coordinates in 2d space. I know the distance of adjacent side and hypotenuse. Cos(angle) = adjacent side / hypotenuse Angle = (adjacent side / hypotenuse) inverse of Cos I exactly do...more >>

Hi, I'm writing an application in vb.net 2005 to batch-print several .pdf file to the default printer, using Process.Start method, without multithreading. But the order of the documents queued in the printer is not correct and every time different. For example, if the application prints, i...more >>

Hi How can I determine which UserControl is loaded in the Panel control? (.NET 2.0) Thanks and Regards Dominik ----------------------------- http://blogs.ecreation.ch...more >>