Llamar al evento DataGridView_CellClick desde un botón

e = New DataGridViewCellEventArgs(col, row)
                    dgvtotales_CellClick(Nothing, e)

private void kryptonbtnEdit_Click(object sender, EventArgs e)
{
    //set parameters of your event args
    var eventArgs = new DataGridViewCellEventArgs(yourColumnIndex, yourRowIndex);

    // or setting the selected cells manually before executing the function
    kryptonDataGridView1.Rows[yourRowIndex].Cells[yourColumnIndex].Selected = true;

    kryptonDataGridView1_CellDoubleClick(sender, eventArgs);
}

fuente: https://stackoverflow.com/questions/27838861/how-to-call-a-datagridview-event-with-a-click-of-a-button