Schlagwort: RemoveAt

//
// Beachten: dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
//
private void btnDelRow_Click(object sender, EventArgs e)
{
    foreach (DataGridViewRow item in dataGridView1.SelectedRows)
    {
        dataGridView1.Rows.RemoveAt(item.Index);
    }
}