DevExpress学习之DevExpress.XtraGrid.Views.Grid.GridView简单验证与下拉框编辑

    因为用DevExpress控件很不熟练，故下面实现一个自定义验证方法。思路为：在输入编号时，判断此列中是否已经有此编号，如果有则提示。

如果没有，则完成编辑，并在下拉框中去除掉此条目。

定义验证事件

_view.dataGridView.ValidateRow += new DevExpress.XtraGrid.Views.Base.ValidateRowEventHandler(dataGridView_ValidateRow);

事件中的验证代码：

//验证
        void dataGridView_ValidateRow(object sender, DevExpress.XtraGrid.Views.Base.ValidateRowEventArgs e)
        {
           string str = _view.dataGridView.GetRowCellValue(e.RowHandle, "PnId").ToString();
           int count = _view.dataGridView.RowCount;
           for (int i = 0; i < count-1; i++)
           {
               if (i!=e.RowHandle&&str.Equals(_view.dataGridView.GetRowCellValue(i, "PnId").ToString()))
               {
                   e.ErrorText = "编号已存在\n"; 
                   e.Valid = false;
                   return;
               }
           }
           //去除已填写的编号
           if (mesPnIdlst.Contains(str))
           {
               mesPnIdlst.Remove(str);
               DDataGrid.InitGridListBox(_view.dataGridView.Columns["PnId"], mesPnIdlst);
           }
        }

向编号列中添加下拉框及其数据： 

 List<string> mesPnIdlst = new List<string>();
        private void AddPnID()
        {
            mesPnIdlst.Clear();
            foreach (string pnid in SensorGroup.sensorHas.Keys)
            {
                if (!SensorGroup.SensorMapHas.ContainsKey(pnid) && !mesPnIdlst.Contains(pnid))
                {
                    mesPnIdlst.Add(pnid);
                }
            }
            DDataGrid.InitGridListBox(_view.dataGridView.Columns["PnId"], mesPnIdlst);
        }

绑定下拉框数据：

 /// <summary>
        /// 加入列表值
        /// </summary>
        /// <param name="colum">Grid列</param>
        /// <param name="dataSource">值列表</param>
        public static void InitGridListBox(DevExpress.XtraGrid.Columns.GridColumn colum, IList dataSource)
        {
             DevExpress.XtraEditors.Repository.RepositoryItemComboBox rpCmb
                    = new DevExpress.XtraEditors.Repository.RepositoryItemComboBox();
            foreach (var item in dataSource)
         {
                rpCmb.Items.Add(item);
         }
           
            colum.ColumnEdit = rpCmb;
        }