NestedDataGrid

.aspx
 1<asp:datagrid id="grdCerSeted" Width="100%" Runat="server" CssClass="DataGrid" AutoGenerateColumns="False"
 2                            ShowHeader="False">
 3                            <Columns>
 4<asp:TemplateColumn>
 5                                    <HeaderStyle Width="0px"></HeaderStyle>
 6                                    <ItemTemplate>
 7                    </td>
 8                </tr>
 9                <tr>
10                    <td colspan="5">
11                        <TABLE cellSpacing="3" cellPadding="3" width="100%" border="0">
12                            <TR>
13                                <TD>
14                                    <DIV id="divCertSetted" style="DISPLAY: inline" runat="server"><asp:datagrid id="drgSetedIntel" runat="server" Width="100%" AutoGenerateColumns="False">
15                                            <Columns>
16</Columns>
17                                        </asp:datagrid></DIV>
18                                </TD>
19                            </TR>
20                        </TABLE>
21                        </ItemTemplate> </asp:TemplateColumn> </Columns> </asp:datagrid>

实现加减号合并展开效果
 1function Toggle( commId, imageId )
 2            {
 3                
 4                var div = document.getElementById(commId);
 5                var GetImg = document.getElementById(imageId);
 6                if (document.all[commId].style.display == 'none')
 7                {    
 8                    document.all[commId].style.display = 'block';
 9                    document.all[imageId].src = '../Images/expand.gif';
10                }
11                else
12                {    
13                    document.all[commId].style.display = 'none';
14                    document.all[imageId].src = '../Images/collapse.gif';
15                }
16            }    

外面DataGrid的ItemCreated注册里面DataGrid事件
 1private void grdCerSeted_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
 2        {
 3            ListItemType item = e.Item.ItemType;
 4            if(item == ListItemType.Item || item == ListItemType.AlternatingItem)
 5            {
 6                //为包里面的DataGrid注册事件，只能手工注册，要不事件不会响应。
 7                drgSetedIntel = (DataGrid)e.Item.FindControl("drgSetedIntel");
 8                if(drgSetedIntel != null)
 9                {
10                    drgSetedIntel.ItemDataBound +=new DataGridItemEventHandler(drgSetedIntel_ItemDataBound);    
11                    drgSetedIntel.ItemCommand +=new DataGridCommandEventHandler(drgSetedIntel_ItemCommand);
12                    drgSetedIntel.ItemCreated +=new DataGridItemEventHandler(drgSetedIntel_ItemCreated);
13                }
14            }
15        }

其它用法和正常DataGrid一样了。。。