private void FormUserChange_Load(object sender, EventArgs e) { DataTable dt = bll.GetDataTableLeader( ); comboBox1.DataSource = dt.Copy( ); comboBox1.DisplayMember = "DBA002"; comboBox1.ValueMember = "DBA001"; comboBox2.DataSource = dt.Copy( ); comboBox2.DisplayMember = "DBA002"; comboBox2.ValueMember = "DBA001"; tableOrder = bll.getTableOfPQW( ); comboBox3.DataSource = tableOrder.DefaultView.ToTable(true, new string [] { "GZ16", "GZ32" }); comboBox3.DisplayMember = "GZ16"; comboBox3.ValueMember = "GZ32"; comboBox5.DataSource = tableOrder.Copy( ).DefaultView.ToTable(true, new string [] { "GZ16", "GZ32" }); comboBox5.DisplayMember = "GZ16"; comboBox5.ValueMember = "GZ32"; comboBox6.DataSource = tableOrder.DefaultView.ToTable(true, new string [] { "GZ37", "GZ38" }); comboBox6.DisplayMember = "GZ37"; comboBox6.ValueMember = "GZ38"; comboBox4.DataSource = tableOrder.Copy( ).DefaultView.ToTable(true, new string [] { "GZ37", "GZ38" }); comboBox4.DisplayMember = "GZ37"; comboBox4.ValueMember = "GZ38"; DataTable tableC = bll.getTableOfPQWC( ); comboBox7.DataSource = tableC; comboBox7.DisplayMember = "GZ30"; comboBox7.ValueMember = "GZ31"; comboBox8.DataSource = tableC.Copy( ); comboBox8.DisplayMember = "GZ30"; comboBox8.ValueMember = "GZ31"; }