DataWindow.NET 控件 实现点击列头排序

1.定义字段        
                Boolean ib_SetSort = true;
                string is_SortType = "D";
      2.
             /// <summary>dw排序
        ///
        /// </summary>
        /// <param name="sortDW">要排序的dw</param>
        private void DWSetSort(Sybase.DataWindow.DataWindowControl sortDW) //数据窗口排序
        {
            try
            {               
                string is_OrderCol = "";
                if (this.ib_SetSort == true)
                {
                    string ls_CurObj = "";// ls_CurCol = "";
                    int li_LinePos = 0;
                    int ll_CurRowNumber = 0;
                    ls_CurObj = sortDW.ObjectUnderMouse.Gob.Name; //得出objectName
                    ll_CurRowNumber = sortDW.ObjectUnderMouse.RowNumber; //得出当前Row

                    //li_LinePos = Convert.ToInt32(sortDW.Describe(ls_CurObj + ".X")) + (Convert.ToInt32(sortDW.Describe(ls_CurObj + ".Width")) - 20);
                    if (sortDW.Describe(ls_CurObj + ".Band") == "header")
                    {
                        if (ll_CurRowNumber == 0 & sortDW.Describe(ls_CurObj + ".Text") != "!")
                        {
                            is_OrderCol = ls_CurObj.Substring(0, ls_CurObj.Length - 2);

                            if (is_SortType == "A")
                            {
                                li_LinePos -= 20;
                                //DataWindowSort(sortDW, li_LinePos, is_OrderCol, is_SortType);
                                sortDW.SetSort(is_OrderCol + " " + is_SortType);
                                sortDW.Sort();
                                is_SortType = "D";
                            }
                            else
                            {
                                //DataWindowSort(sortDW, li_LinePos, is_OrderCol, is_SortType);
                                sortDW.SetSort(is_OrderCol + " " + is_SortType);
                                sortDW.Sort();
                                is_SortType = "A";
                            }
                        }

                    }

                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message,"排序错误!");
            }           
        }

        3.
             private void dw_2_Click(object sender, EventArgs e)
            {
                 DWSetSort(dw_2);
             }