grid中header置頂不動
        設定displaylayout中的stationarymargins

grid中設定資料篩選
        // The Browser, LoadOnDemand, and ViewType settings to enable XmlHttp support were done at design time.                   // Many of these setting can be done at design time but are done here to show them being set explictly.

        // Turn on Filtering
        Layout.FilterOptionsDefault.AllowRowFiltering = Infragistics.WebUI.UltraWebGrid.RowFiltering.OnServer;

        // Limit the size of the dropdown
        Layout.FilterOptionsDefault.DropDownRowCount = 10;
        Layout.FilterOptionsDefault.FilterDropDownStyle.Width = Unit.Pixel(190)

            // Turn on RowIsland Filtering
            // RowIsland filtering only filters the siblings rows of a group.  For Band Zero, all Band Zero rows are                         siblings so there
            // is little difference in the modes, however in child bands, this behavior is more evident.
        Layout.FilterOptionsDefault.RowFilterMode = Infragistics.WebUI.UltraWebGrid.RowFilterMode.SiblingRowsOnly;

        在grid的FilterPopulating中
        // Get the unique country names
        e.WorkingList.AddRange( ArrayList );
            // Tell the WebGrid not to go looking for the data.  By setting this
            // flag to true, the WebGrid uses the provided list for it's data.
            e.Handled = true;

            grid的資料來源需要在InitializeDataSource中設定
            grid需要繫結在一個固定的datatable中，不可動態new的
            每一個row需要設定為isbound ＝ true

        grid使用ajax自動讀取資料
                設定browser 未xml ， LoadOnDemand為 xml ，並設定ViewType為Hierarchical即可，但是需要在InitializeDataSource中繫結資料

        grid中獲得置頂的column
                Layout.Bands[0].Columns.FromKey("Key")

        grid中分頁
                設定Pager中允許分頁，分頁大小
                在InitializeDataSource繫結資料

                自定義分頁需要設定
                Layout.Pager.StyleMode = Infragistics.WebUI.UltraWebGrid.PagerStyleMode.CustomLabels;
                pattern設定為：<table width=100%><tr><td align=left>頁碼：[currentpageindex]/[pagecount] 每頁:[pagesize]</td><td align=right>[default]<td></tr></table>

                Layout.Pager.CustomLabels = letters;               
                Page中AllowCustomPaging並在PageIndexChanged設定要顯示的資料
                比如        設定資料來源為customerTable2在PageIndexChanged中設定：
                customerTable2.DefaultView.RowFilter = "CustomerID LIKE '" + letters[e.NewPageIndex-1] + "%'";

                letters為：
                        letters = new string[letterCount];
                        for (int i = 0 ; i < letterCount ; i++)
                                letters[i] = ((char)((int)'A'+i)).ToString();