///     text of the control is changed. However, SetWindowText cannot change the text of a control in another application.

///     If the target window is owned by the current process, <see cref="SetWindowText" /> causes a WM_SETTEXT message to

///     however, <see cref="SetWindowText" /> sets the text for the control, not for the list box entries.<br />To set the

///     <see cref="SetWindowText" />. The <see cref="SetWindowText" /> function does not expand tab characters (ASCII code

public static extern bool SetWindowText(IntPtr hwnd, String lpString);

Private Shared Function SetWindowText(ByVal hwnd As IntPtr, ByVal lpString As String) As Boolean

Declare Auto Function SetWindowText Lib "user32" (ByVal hWnd As IntPtr, ByVal lpstring As String) As Boolean

SetWindowText(Process.GetCurrentProcess().MainWindowHandle, "Amazing!");

static extern bool SetWindowText(IntPtr hWnd, string lpString);

   if (hWnd != IntPtr.Zero) SetWindowText(hWnd, "Window Found");