DataRowCollection.RemoveAt Method

When a row is removed, all data in that row is lost. You can also call the Delete method of the DataRow class to just mark a row for removal. Calling RemoveAt is the same as calling Delete and then calling AcceptChanges.

You can use the Clear method to remove all members of the collection at one time.

The following example removes the last row in a DataRowCollection by calling the RemoveAt method.

 Private Sub RemoveRowByIndex()
    Dim table As DataTable = CType(DataGrid1.DataSource, DataTable)
    Dim rowCollection As DataRowCollection = table.Rows
    If rowCollection.Count = 0 Then 
        Exit Sub
    End If
    rowCollection.RemoveAt(rowCollection.Count - 1)
End Sub

.NET Framework

.NET Framework Client Profile

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference