see an example here for repeaters, but the idea is same:HOW TO: Display Hierarchical Data by Using Nested Repeater Controls and Visual C# .NET
http://support.microsoft.com/default.aspx?scid=kb;en-us;306154
http://support.microsoft.com/default.aspx?scid=kb;en-us;306154
一个非常傻的做法:<%@ Import namespace="System.Xml" %>
<%@ Import namespace="System.Web.UI.WebControls" %>
<%@ Import namespace="System.Web.UI" %>
<%@ Import namespace="System.Web" %>
<%@ Import namespace="System.Data.SqlClient" %>
<%@ Import namespace="System.Data" %>
<%@ Import namespace="System" %>
<%@ Page language="c#" Debug="false" AutoEventWireup="false" Inherits="System.Web.UI.Page" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>Test</title>
<script language="C#" runat="server">
protected override void OnLoad(EventArgs e)
{
if(!IsPostBack)
{
BindDataGrid();
}
}
protected void BindDataGrid()
{
DataSet ds=new DataSet();
using(SqlConnection conn=new SqlConnection("Server=(local);UID=sa;PWD=xxxx;Initial Catalog=xxxx"))
{
conn.Open();
using(SqlCommand cmd=new SqlCommand("SELECT * FROM Departments Inner Join Employees ON Employees.DepartmentID=Departments.DepartmentID FOR XML AUTO,XMLDATA",conn))
{
XmlReader xr=cmd.ExecuteXmlReader();
ds.ReadXml(xr,XmlReadMode.Fragment);
xr.Close();
DataGrid1.DataSource=ds.Tables["Departments"].DefaultView;
DataGrid1.DataBind();
}
}
}
protected DataView GetDataView(object DataItem)
{
DataView view=new DataView(((DataRowView)DataItem).DataView.Table.ChildRelations[0].ChildTable);
view.RowFilter="DepartmentID="+DataBinder.Eval(DataItem,"DepartmentID");
return view;
}
</script>
<meta name="GENERATOR" Content="Microsoft Visual Studio 7.0">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body>
<form id="Test" method="post" runat="server">
<P>
<asp:DataGrid id="DataGrid1" runat="server" Width="339px" BorderStyle="None" BorderWidth="1px" BorderColor="#CCCCCC" BackColor="White" CellPadding="3">
<FooterStyle ForeColor="#000066" BackColor="White"></FooterStyle>
<HeaderStyle Font-Bold="True" ForeColor="White" BackColor="#006699"></HeaderStyle>
<PagerStyle HorizontalAlign="Left" ForeColor="#000066" BackColor="White" Mode="NumericPages"></PagerStyle>
<SelectedItemStyle Font-Bold="True" ForeColor="White" BackColor="#669999"></SelectedItemStyle>
<ItemStyle ForeColor="#000066"></ItemStyle>
<Columns>
<asp:TemplateColumn HeaderText="DataGrid" FooterText="DataGrid">
<ItemTemplate>
<asp:DataGrid id=DataGrid2 runat="server" CellPadding="3" BackColor="White" BorderColor="White" BorderWidth="2px" BorderStyle="Ridge" Width="340px" CellSpacing="1" GridLines="None"
DataSource="<%# GetDataView(Container.DataItem) %>">
<FooterStyle ForeColor="Black" BackColor="#C6C3C6"></FooterStyle>
<HeaderStyle Font-Bold="True" ForeColor="#E7E7FF" BackColor="#4A3C8C"></HeaderStyle>
<PagerStyle HorizontalAlign="Right" ForeColor="Black" BackColor="#C6C3C6"></PagerStyle>
<SelectedItemStyle Font-Bold="True" ForeColor="White" BackColor="#9471DE"></SelectedItemStyle>
<ItemStyle ForeColor="Black" BackColor="#DEDFDE"></ItemStyle>
<Columns>
<asp:BoundColumn DataField="EmployeeName" HeaderText="EmployeeName" FooterText="EmployeeName"></asp:BoundColumn>
</Columns>
</asp:DataGrid>
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
</asp:DataGrid>
</P>
</form>
</body>
</HTML>
谢谢，可是不用DATASET
我用OleDbDataReader又该什么做呢？
那个例子我看了一下，关键在于使用这样的数据绑定表达式：
<%#((DataRowView)Container.DataItem).Row.GetChildRows("myrelation")%>该绑定会返回一个DataRowCollection集合，可是如果我并不想取出ChildRows中的所有行，而只是想取出其中某个column满足某个值的行，又该怎么办呢？DataTable有select,Dataview有RowFilter,可DataRowCollection只有个Find by id!
{
//get row's child rows and filter it
}//.....
<%# GetRows(((DataRowView)Container.DataItem).Row)%>