Question

HELP！一直在努力手动添加DataGridViewRow行与预先填充的组合框...准确的DataGridViewComboBoxColumn。我只是想让它自动填充字符串，运输选项“地面”，“空气”等。我已经看到下拉框中的第一个值，但系统说

System.ArguementException：DataGridViewComboBoxCell值无效

......而我从来没有能够“降低”组合框控制（打开它）我想制作专栏，并自动填充组合框及其字符串值，但我最近一直在搞乱“DataGridViewComboBoxCell”，我希望我最终不需要...谢谢你我真的！！

   DataGridViewComboBoxCell myCbox = new DataGridViewComboBoxCell(); //TEST TBD    
   //
   if ((dgvMasterPrinting.Columns == null) || (dgvMasterPrinting.Columns.Count < 1)) 
   {
   DataGridViewComboBoxColumn dgcShipType = new DataGridViewComboBoxColumn();

   //Column SHIP-TO COMBOBOX                    
   dgcShipType.Name = "colComboShip"; //???
   //dgcShipType.DataPropertyName = "colComboShip"; //TEST TBD
   dgcShipType.HeaderText = "colComboShip";
   dgcShipType.DropDownWidth = 90;
   dgcShipType.Width = 90;
   dgcShipType.MaxDropDownItems = 5;
   dgcShipType.DisplayIndex = 5;
   dgcShipType.FlatStyle = FlatStyle.Flat;
   myCbox.Items.AddRange("A", "N", "P", "S", "Z");
   //   dgcShipType.Items.AddRange("A", "N", "P", "S", "Z");

   //add the other columns (works fine, only the combo box column has problems)
   this.dgvMasterPrinting.Columns.Add(dgcShipType);
   }
   this.dgvMasterPrinting.Rows.Add(...

我做了一个简单的测试：使用设计器制作一个DatagridviewComboBoxColumn并添加项目。有趣的是，这会导致错误：'theDataGridViewComboBoxCell值无效'...我在www上看到有一个固有的MS错误潜伏在...内...

Answer 1

NM我明白了......

                    DataGridViewComboBoxColumn dgcShipType = new DataGridViewComboBoxColumn();
...
 //Column SHIP-TO COMBOBOX                    
                    dgcShipType.ReadOnly = false;
                    dgcShipType.AutoComplete = false;
                    dgcShipType.DisplayStyleForCurrentCellOnly = true;
                    dgcShipType.DropDownWidth = 100;
                    dgcShipType.Width = 110;
                    dgcShipType.HeaderText = "ShipType";
                    dgcShipType.Items.AddRange(new object[] { "GROUND", "LOCAL PATIENT", "3-DAY UPS", "2-DAY SERVICE", "PRIORITY OVERNT", "EARLY AM", "WILL CALL" });
                    dgcShipType.Name = "colComboShip";
                    dgcShipType.MaxDropDownItems = 7;
                    dgcShipType.Resizable = System.Windows.Forms.DataGridViewTriState.True;
                    dgcShipType.SortMode = System.Windows.Forms.DataGridViewColumnSortMode.Automatic;
                    dgcShipType.DefaultCellStyle.NullValue = "GROUND"; //sets the default display value
                    dgcShipType.DisplayIndex = 5;
                    //
...
this.dgvMasterPrinting.Rows.Add(...

使用预先填充的组合框手动添加DataGridViewRow：DataGridViewComboBoxColumn

1 个答案: