private void dataGridView1_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
{
string xx = dataGridView1.Rows[e.RowIndex].Cells[0].Value.ToString();
materialedit fm = new materialedit(xx);
fm.ShowDialog();
}
private void button1_Click(object sender, EventArgs e)
{
string xx = dataGridView1.SelectedRows[0].Cells[0].Value.ToString();
materialedit fm = new materialedit(xx);
fm.ShowDialog();
}