Assembly: System.Windows.Forms (in system.windows.forms.dll)
When the DataGridView is in column-selection mode and this method is called, each column's Selected property is set to true, and each row's Selected property is set to false.
Conversely, when the DataGridView is in row-selection mode and this method is called, each row's Selected property is set to true, and each column's Selected property is set to false.
The following code example demonstrates the use of the SelectAll method. To run this example, paste the code into a form that contains a DataGridView named dataGridView1 and a Button named selectAllButton, and ensure all events are associated with their event handlers.
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.