The property IsSelected determines whether a row is selected. For example, to select a row programmatically use the following code snippet:  

Copy[C#] Selecting a row

rowToSelect.IsSelected = true;

Copy[VB.NET] Selecting a row

rowToSelect.IsSelected = True

All currently selected rows are included in the SelectedRows collection. If you clear this collection and send an update message to RadGridView, this will essentially unselect all rows:

Copy[C#] Clearing the selected rows

radGridView1.ClearSelection();

Copy[VB.NET] Clearing the selected rows

Me.RadGridView1.ClearSelection()

The property IsCurrent determines which row is the current one. There can be only one current row or no current row if IsCurrent is set to null.

Most themes visualizes it in a similar way to the way selected rows are visualized although technically IsCurrent and IsSelected are independent of one another. IsCurrent functionality is related to the keyboard support.

Use the following code snippet to remove the current row:

Copy[C#] Clearing the current row

this.radGridView1.CurrentRow = null;

Copy[VB.NET] Clearing the current row

Me.RadGridView1.CurrentRow = Nothing