private void Load_Table()
 {
     MySqlOperations.Select_DataGridView(MySqlQueries.Select_Materialy, dataGridView1);
     dataGridView1.Columns[0].Visible = false;
     comboBox1.SelectedItem = comboBox1.Items[0];
 }
 private void Load_Table()
 {
     MySqlOperations.Select_DataGridView(MySqlQueries.Select_Izdeliya, dataGridView1);
     dataGridView1.Columns[0].Visible = false;
 }