I want to use a collection of controls in a usercontrol. It should work like the built-in toolbar, that means i want to add and remove buttons with the designer. my problem is that the designer does not save settings within my collection - the entries stay in the generated code but when i run th...more >>

Hi, I am recently started to work with the dot-net framework but has several years of exprience of Visual Basic (version 4-6). In my old VB 6 environment I have a FlexGrid control which is simply a plain grid you can do anything with, including connecting to a data source. However, what I f...more >>

I want to set the height of Column Headers in a DataGrid and I don't find such a method. Can anyone guide me? Cristi ...more >>

My code looks like this: private string[] _lines; public string[] Lines { get { return _lines; } set { _lines = value; this.Invalidate(); } } The above works great if you set the entire _lines array to a new value but I need to cat...more >>

Hey there; I am working on a C# .NET project where we are using the PropertyGrid control to display and update runtime properties to the user. One of the design constraints we ran into right away was that the user should be able to specify the order of items they add to the control. The trick...more >>

Hi... If you set the droppeddown property of the MS ComboBox control to true inside the Text_Changed event of a TextBox or a RichTextBox [May be what ever extends the textboxbase] the mousepointer dissapears and stays hidden till u give another click. Can someone please tell me a solution to t...more >>

Hi, I've a problem that I'm banging my head against the wall trying= to solve=2E Basically I need to create the style of a cell in a= datagrid based on the previous cells value=2E So if the user selected one value in the previous cell, I might= want a combo box to appear in the next=2E If th...more >>

in a list box i have seprate Display Member and Value Member and the list box is multiextended... now i want to get the value of all the items selected on the click event of an button.... can ANY ONE HELP........ Although GetSelected[int Index] give me wether an item is selected or not but ho...more >>

I want to instantiate a control at runtine from the code of a UserControl. This is similar to a ComboBox creating a popup list. How can I do this? Do I just call "New" and "Show"? Or do I also have to link the new control with the parent form? thanks...more >>

Hi all, i´m doing a user control, and one of my public properties is a collection, but in designtime, i´m adding a few objects of my type, but none of them are saved in the form, everytime i go to the properties of my object nothing is in there ? anyone have a sample or counld help me ?? th...more >>

I have a custom control A, that has two text fields and a datagrid object. the datagrid is populated within the control, quering the information from the database at the time of construction. Now I have a Form, with a tabbed control, let's name it B. On the object B we need to display N instances...more >>

Hi I am struggling with a simple problem here. I am applying styles to DataGrid, however, data is displayed without any styles. When in break mode, I check that DataGrid does have styles, and all the properties are there. However, styles don't render on a DataGrid. It displays data as it is. I...more >>

I get the following exception when I try to run a c# winform app that includes an imagelist: An unhandled exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.dll Additional information: Exception has been thrown by the target of an invocation. Unhandled...more >>

I'm trying to get an image from a button for use in a custom button datagrid column. I've gotten all the hard part figured out by grabbing different chunks off the web. It works perfectly, but what I'm running into is that whenever I set the button to be FlatStyle.System, InvokePaint doesn't d...more >>

The following code snippet produces an ArgumentOutOfRange exception when calling ListView.SelectedIndices.Contains. I'd consider this a bug; any comments? (Just click tthe 'Add' button to repro). Stu using System; using System.Windows.Forms; public class WindowsForm : System.Windows...more >>

hi, can any one help me ? how i can prevent user to do not change the width of column of list view in vb.net From: Subhash Bhartiya ----------------------- Posted by a user from .NET 247 (http://www.dotnet247.com/) <Id>dTXRryKOgk2v6uGqPKM+yg==</Id>...more >>

I'm using the following code to access a database, but it has trouble connecting. I got 'source' from creating a connection in the design view and I tested the connection and it was fine. Any ideas? string select = "SELECT Name FROM Customer"; string source = "data source=C:\\MyDB.mdb;passwo...more >>

Hello, Standard Tree.Sorted property doesn't sort nodes like I want to. It just place them in a specific place while adding new node. This is not suitable for me, because during insertion I don't know node's name so it is placed in the end of all nodes. To make things clear I will cover some s...more >>

We are programatically selecting a row in the datagrid and we need a way to make sure it is visible to the user. Is there a way to do this!? Thanks, - JV ...more >>

Hi, I'm trying on an FTP class which I don't know who's the original author. It has a method "GetFileList" to return a string array containing the remote directory's file list. I need to know the files/folders exist in the FTP site. Does anyone have any idea how to use this method? Any sample ...more >>

Is this possible at all? I would like to draw some column headers in the "dropdown" portion which are not "scrolled off" (as would be the case by simply picking up DrawItem event for index 0). I (think) this means I need to detect when I am drawing the topmost row to intercept that one instead. ...more >>

Hello Esteemed Developers and Esteemed Experts, I have a background-running-thread in my application that is designed and developed at Windows Forms (.NET) by using Visual C++ .NET Standard on Windows 2000 Professional O.S. Whenever the required job is done in that background-running-thread,...more >>

I am having trouble updating lines in a richtextbox. The rtb.lines.setvalue("text", linenumber) runs, but does not update the control in the form. The code follows... This apps automatically updates an output screen with changes in the file when the file length changes.. Private Sub LoadFi...more >>

Ok, I am designing a user management app with Windows Forms, has textboxes for firstname, middlename, lastname, userid, site, dept, etc... These appear on the mail usermgr form which starts with the Application I have a second form that does a lookup of users based on some information , Search...more >>

I'm trying to use the code found in this newsgroup post: http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&c2coff=1&threadm=%23JZYO4XRDHA.4024%40tk2msftngp13.phx.gbl&rnum=1&prev=/groups%3Fq%3DC%2523%2520find%2520appropriate%2520font%2520size%26hl%3Den%26lr%3D%26ie%3DUTF-8%26c2coff%3D1%26sa%3DN%2...more >>

Dear all, How can I create an ActiveX OCX using Visual Studio .NET? Thanks, Carlos ...more >>

What would be a good and secure licency policy to distribute my components? I manage to find some good examples using the registry, but i doesn`t seem to be the best choice. I know it depends on how i want to market my control, but what I really need is a strong licensing in a way the user could ...more >>

I created a windows user control and defined an icon to be shown in the toolbox using the appropriated attribute. But, the icon doesn`t appear, and Visual Studio uses the default icon. the same happens in MOC course 2555, with the practices solutions. thanks a lot. ...more >>

How do I determine if a mouse click is in the image or the text of a TreeView Node? Michael ...more >>

Dear All, I am using MS MonthCalender control...I would like to display some dates in a different color...to indicate that they are holidays...Is there a way to do this? Please help... TALIA Many Regards Jack...more >>

i can't believe i have to ask this since i've been developing Windows stuff with C/API and MFC for about 10 yrs now but it seems handling messages/events is a tad bit different in C#. here's the rundown.. have a custom control that is inherited from Control obviously need to paint it myself sinc...more >>

Hello, The NumericUpDown control doesn't adopt the Windows XP style. Is there something special to do to this control so that it adopts the XP style? Thanks in advance, Pascal ...more >>

I am trying to launch a form that shows a status update via a progress bar of tests running in the background. The form only has a cancel button if the user wishes to stop. My problem ... I can't seem to figure out where to call the routine that launches my test cases after the form is fully...more >>