C#

public void
PopulateGrid
(
)
{
    foreach
    (
        System.Data.DataRow src
    in
        this.TableDef.DataTable.Rows
    )
    {
        System.Windows.Forms.DataGridViewButtonCell action =
            (System.Windows.Forms.DataGridViewButtonCell) src [ this.dgvData.Columns.Count - 1 ] ;

        System.Windows.Forms.DataGridViewRow dst =
            new System.Windows.Forms.DataGridViewRow() ;

        for ( int c = 0 ; c < this.dgvData.Columns.Count - 1 ; c++ )
        {
            System.Windows.Forms.DataGridViewTextBoxCell cell =
                new System.Windows.Forms.DataGridViewTextBoxCell() ;

            cell.Value = src [ c ] ;

            cell.Style.BackColor = action.Style.BackColor ;

            dst.Cells.Add ( cell ) ;
        }

        dst.Cells.Add ( action ) ;

        this.AddGridRow ( dst ) ;
    }

    return ;
}

this.AddGridRow = delegate
(
    System.Windows.Forms.DataGridViewRow Row
)
{
    if ( this.InvokeRequired )
    {
        this.Invoke ( this.AddGridRow , Row ) ;
    }
    else
    {
        this.dgvData.Rows.Add ( Row ) ;
    }

    return ;
} ;

System.Diagnostics.Debugger.Break();

using System.Diagnostics;
...
if(Debugger.IsAttached)
   {
   Debugger.Break();
   }