private void button6_Click(object sender, EventArgs e)
{
if (dataGridView1.SelectedCells[0].ColumnIndex == 0)
{
DbEngine.DeleteSelectedId(Convert.ToInt32(dataGridView1.SelectedCells[0].Value));
FillGrid(dataGridView1);
}
if (dataGridView1.SelectedCells[0].ColumnIndex == 1)
{
DbEngine.DeleteSelectedName((dataGridView1.SelectedCells[0].Value).ToString());
FillGrid(dataGridView1);
}
}