How to move the current cell to edit mode with selecting all text in cell while clicking on second time in WinForms GridControl?

this.gridGroupingControl1.TableControlMouseDown+=gridGroupingControl1_TableControlMouseDown;
void gridGroupingControl1_TableControlMouseDown(object sender, Syncfusion.Windows.Forms.Grid.Grouping.GridTableControlMouseEventArgs e)
{
   GridCurrentCell currentCell= e.TableControl.CurrentCell;
   int row, col;
   if(e.TableControl.PointToRowCol(e.Inner.Location,out row,out col))
   {
      if(currentCell.RowIndex.Equals(row)&& currentCell.ColIndex.Equals(col))
      {
         currentCell.BeginEdit();
         GridTextBoxCellRenderer textRenderer= currentCell.Renderer as GridTextBoxCellRenderer;
         textRenderer.TextBox.SelectAll();
      }
   }
}

AddHandler gridGroupingControl1.TableControlMouseDown, AddressOf gridGroupingControl1_TableControlMouseDown
Private Sub gridGroupingControl1_TableControlMouseDown(ByVal sender As Object, ByVal e As Syncfusion.Windows.Forms.Grid.Grouping.GridTableControlMouseEventArgs)
   Dim currentCell As GridCurrentCell = e.TableControl.CurrentCell
   Dim row, col As Integer
   If e.TableControl.PointToRowCol(e.Inner.Location,row,col) Then
      If currentCell.RowIndex.Equals(row) AndAlso currentCell.ColIndex.Equals(col) Then
         currentCell.BeginEdit()
         Dim textRenderer As GridTextBoxCellRenderer=TryCast(currentCell.Renderer, GridTextBoxCellRenderer)
         textRenderer.TextBox.SelectAll()
    End If
  End If
End Sub