DevExpress_GridLookUpEdit下拉網格數據顯示多選操作

1、效果圖：

 

2、界面拖一個gridLookUpEdit控件點擊designer views進入界面，如圖：

a、先創建下拉網格顯示的列數據：

 

 

復選框列設置：caption：列頭顯示、tag設置為chenkbox

 

b、上圖columnedit選擇的數據設置：

 

 

 c、網格顯示設置：

views→GridView1→OptionsCustomization→AllowFilter=false //關掉條件過濾

views→GridView1→OptionsCustomization→AllowSort=false  //關掉排序

views→GridView1→OptionsMenu→EnableColumnMenu = False  //關掉列菜單

《多選重點來了》

views→GridView1→OptionsSelection→EnableAppearanceFocusedCell = False  //關掉列焦點

 views→GridView1→OptionsSelection→MultiSelect = True  // 開啟多選

 views→GridView1→OptionsSelection→MultiSelectMode =RowSelect  //默認不變

 views→GridView1→OptionsView→ShowGroupPanel = False 

 views→GridView1→FocusRectStyle=RowFocus

this.gridLookUpEdit1.CustomDisplayText += new DevExpress.XtraEditors.Controls.CustomDisplayTextEventHandler(gridLookUpEdit1_CustomDisplayText);
this.gridLookUpEdit1.Properties.DataSource = list; //列表數據
this.gridLookUpEdit1.Properties.DisplayMember = "wo_no"; //綁定Text顯示的字段源名稱
this.gridLookUpEdit1.Properties.ValueMember = "wo_no"; //綁定Value字段源名稱    

 

可視化設置已經完成，想要實現多選還要代碼

 //工單下拉選項選中索引
   IList<int> rowsIndex = new List<int>();
 //定義修改進入驗證
   bool edit_flag = false;
 //定義修改進入的工單賦值
   string wo_text = "";

///gridLookUpEdit文本框顯示的內容
private void gridLookUpEdit1_CustomDisplayText(object sender, CustomDisplayTextEventArgs e)
        {
            if (edit_flag)
            {//驗證是否是修改進入的賦值
                e.DisplayText = wo_text;
            }
            else
            {
                if (rowsIndex.Count > 0)
                {
                    int[] rows = rowsIndex.ToArray();
                    if (rows != null)
                    {
                        List<string> listname = new List<string>();
                        foreach (int r in rows)
                        {
                            string name = gridView1.GetRowCellValue(r, "wo_no").ToString();
                            listname.Add(name);
                        }
                        string text = string.Join(",", listname);
                        e.DisplayText = text.ToString();
                    }
                }
                else
                {
                    e.DisplayText = "";
                }
            }
        }

　　　　　///列表選中事件
        private void gridView1_SelectionChanged(object sender, DevExpress.Data.SelectionChangedEventArgs e)
        {
            if (ActiveControl is GridLookUpEdit)
            {
                //(ActiveControl as GridLookUpEdit).Text = " ";
            }
        }

　　　　　///列表一行列單擊事件
        private void gridView1_RowCellClick(object sender, RowCellClickEventArgs e)
        {
            WorkOrder wo = new WorkOrder();
            int index = this.gridView1.FocusedRowHandle;
            wo = gridView1.GetRow(index) as WorkOrder;
            if (wo == null)
            {
                MessageDialog.ShowTips("請選中一行！");
                return;
            }
            if (e.Column.Tag != null && e.Column.Tag.ToString() == "chenkbox")
            {
                int selectIndex = this.gridView1.FocusedRowHandle;
                edit_flag = false;//修改進入標識變更

                WorkOrder row = this.gridView1.GetRow(selectIndex) as WorkOrder;
                if (row != null)
                {
                    DevExpress.Data.CustomSummaryEventArgs e1 = new DevExpress.Data.CustomSummaryEventArgs();
                    row.CheckboxSelectorColumn = !row.CheckboxSelectorColumn;

                    if (rowsIndex.Count <= 0)
                    {
                        if (row.CheckboxSelectorColumn)
                            rowsIndex.Add(selectIndex);
                    }
                    else
                    {
                        if (rowsIndex.Contains(selectIndex) && !row.CheckboxSelectorColumn)//包含並為false,移除
                            rowsIndex.Remove(selectIndex);
                        if (!rowsIndex.Contains(selectIndex) && row.CheckboxSelectorColumn)//不包含並為true,添加
                        {
                            bool select = false;
                            foreach (int r in rowsIndex)
                            {
                                WorkOrder woTemp = this.gridView1.GetRow(r) as WorkOrder;
                                if (woTemp.material_no == row.material_no)
                                {
                                    rowsIndex.Add(selectIndex);
                                    select = true;
                                    break;
                                }
                            }

                            gridView1.SetRowCellValue(selectIndex, "CheckboxSelectorColumn", select);
                        }
                    }

                     (ActiveControl as GridLookUpEdit).Text = " ";
                }
                this.gridView1.RefreshData();
            }
        }