private void UsunBT_Click(object sender, EventArgs e)
{
DataGridViewCheckBoxCell cell = null;
BazaDanych baza = new BazaDanych();
foreach (DataGridViewRow row in dataGridView1.Rows)
{
cell = row.Cells[0] as DataGridViewCheckBoxCell;
if (cell.Value != cell.TrueValue)
{
string numer = row.Cells[1].Value.ToString();
if (MessageBox.Show("Jesteś pewien, że chcesz usunąć klienta "+row.Cells[2].Value.ToString()+" "+row.Cells[3].Value.ToString()+"?", "Potwierdź", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
baza.UsunKlienta(Convert.ToInt32(numer));
}
}
}
DataTable dt = baza.wykonajSelect("SELECT * FROM Klienci");
this.dataGridView1.DataSource = dt;
}
