实现：GridControl中的列表包括三列：名称、目标栏位、源栏位

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    第一步
    在RunDesigner中设置
    1、三列的FieldName和绑定的DataTable必须一致
    2、且设置OptionsView—>ColumnAutoWidth=false;
    3、第三列的ColumnEdit添加repositoryComboBoxEdit

    第二步
    用代码给repositoryComboxEdit添加下拉选项，设置了CboItemEntity类

    1.  private void AddItems(string[] columnName)
    2.         {
    3.             int length = columnName.Length;
    4.             CboItemEntity itemnull = new CboItemEntity();
    5.             itemnull.Text = string.Empty;
    6.             itemnull.Value = 0;
    8.             for (int i = 0; i < length; i++)
    9.             {
    10.                 CboItemEntity item = new CboItemEntity();
    11.                 item.Text = columnName[i];
    12.                 item.Value = i+1;
    13.                 repositoryItemComboBox1.Items.Add(item);
    14.             }
    15.         }
    18. public class CboItemEntity
    19.     {
    20.         private object _text = 0;
    21.         private object _Value = "";
    22.         ///
    23.         /// 显示值
    24.         ///
    25.         public object Text
    26.         {
    27.             get { return this._text; }
    28.             set { this._text = value; }
    29.         }
    30.         ///
    31.         /// 对象值
    32.         ///
    33.         public object Value
    34.         {
    35.             get { return this._Value; }
    36.             set { this._Value = value; }
    37.         }
    39.         public override string ToString()
    40.         {
    41.             return this.Text.ToString();
    42.         }
    43.     }

    第三步：初始化DataTable绑定

    1.  dt.Columns.Add("Name", typeof(string));
    2.  dt.Columns.Add("AimColumn", typeof(string));
    3.  dt.Columns.Add("OriginColumn", typeof(string));
    5. dt.Rows.Add(new object[]{"name","aimcolumn","origincolumn"});
    6. //根据需求自行添加
    7. //dt.Rows.Add(new object[]{"name","aimcolumn","origincolumn"});
    9. //gridControl绑定
    10. this.gridControl2.DataSource = Table_Choose;
    11. this.gridView2.BestFitColumns();
    13. //绑定下拉框改变事件
    14. repositoryItemComboBox1.SelectedIndexChanged += new EventHandler(repositoryItemComboBox1_SelectedIndexChanged);
    15. repositoryItemComboBox1.ParseEditValue += new DevExpress.XtraEditors.Controls.ConvertEditValueEventHandler(repositoryItemComboBox1_ParseEditValue);

    第四步：下拉菜单的事件

    1. void repositoryItemComboBox1_ParseEditValue(object sender, DevExpress.XtraEditors.Controls.ConvertEditValueEventArgs e)
    2.         {
    3.             e.Value = e.Value.ToString();
    4.             e.Handled = true;
    5.         }
    7.         void repositoryItemComboBox1_SelectedIndexChanged(object sender, EventArgs e)
    8.         {
    9.             CboItemEntity item = new CboItemEntity();
    10.             try
    11.             {
    12.                 //1.获取下拉框选中值
    13.                 item = (CboItemEntity)(sender as ComboBoxEdit).SelectedItem;
    14.                 string text = item.Text.ToString();
    15.                 int value = (int)item.Value;
    16.                 //2.获取gridview选中的行
    17.                 GridView myView = (gridControl2.MainView as GridView);
    18.                 int dataIndex = myView.GetDataSourceRowIndex(myView.FocusedRowHandle);
    19.                 //3.保存选中值到datatable
    20.                 Table_Choose.Rows[dataIndex]["OriginColumn"] = text;
    21.                 gridControl2.DataSource = Table_Choose;
    22.                 gridControl2.RefreshDataSource();
    23.             }
    24.             catch (Exception ex)
    25.             {
    26.                 XtraMessageBox.Show(ex.Message, "提示");
    27.             }
    29.         }
    30.     }