WPF: How to merge multiple columns in grid ?

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Auto Scroll in Common Controls

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This example shows, how to programatically autoscroll WinForm controls TextBox, ListBox, ListView, TreeView and DataGridView. Autoscroll to the end of box or view is useful. For example, in situations when you use one of these components as the output log window. Usually you add the items to the box or view and you want to be sure that the recently added item is visible without the necessary to do it manually. Though it is not difficult to solve this problem, .NET doesn't provide any unified way how to do it. TextBox autoscroll Code: textBox1.SelectionStart = textBox1.Text.Length; textBox1.ScrollToCaret(); ListBox autoscroll Code: listBox1.SelectedIndex = listBox1.Items.Count - 1; listBox1.SelectedIndex = -1; ListView autoscroll Code: listView1.EnsureVisible(listView1.Items.Count - 1); TreeView autoscroll Code: treeView1.Nodes[treeView1.Nodes.Count - 1].EnsureVisible(); DataGridView autoscroll Code: dataGridView1.FirstDisplayedCell = ...
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How to lock workstation/desktop programmatically in C#?

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Here, we have to use the external windows API to perform operations on workstation/desktop . For this it is required to include the following directive first, using System.Runtime.InteropServices; Now add the declaration of the API function to a class. If you are using the API function from a single class, you can declare it in the same class. If it is required to be shared across multiple classes, you should create a separate class to contain API methods and change the declaration to make the method public or internal . Here is the API declaration, [ DllImport ( "user32.dll" , SetLastError = true )] [ return : MarshalAs ( UnmanagedType .Bool)] static extern bool LockWorkStation(); Now let's check, how to use this function to lock desktop/workstation. if (!LockWorkStation()) {     MessageBox.Show("Unable to lock desktop/workstation!"); }   Here, LockWorkStation method is called and its return value is verif...
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Disable close button on form - C#

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In one of my projects, I had to implement a form with Close[X] button Hide, so that the user cannot leave the form until it finishes the data processing. From the form designer window in VS.Net 2005, it is possible to hide the Minimize box and Maximize box. But there is no property called Close or CloseBox. Then I had tried with by setting form property ControlBox = false . With this i am able to achieve hiding the Close/Minimize/Maximize buttons. But at the same time there is a side effect.i.e., Form icon(which is generally displayed on form title bar)  also hidden.  So after little bit investigation came up with the following hack to get,  i)  disable the close button  ii) displaying the form icon To achieve this, we have to override CreateParams property of Form base class as follows, Code: private const int CP_DISABLE_CLOSE_BUTTON = 0x200; protected override CreateParams CreateParams { get ...
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