如何将asp.net转发器控件动态绑定到数据源

I have a page with a simple dropdown and repeater control in page.on submit repeater control is bound to datasource1 which has 3 columns.

Now my requirement is if i select option2 , it should bind to datasource2 which contains 4 columns.

<asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="Repeater1_ItemDataBound">
<HeaderTemplate>
    <tr>
        <th align="left">Header1</th>
        <th align="left">Header3</th>
        <th align="left">Header2</th>
    </tr>
</HeaderTemplate>
<ItemTemplate>
    <tr>
        <td>
            <asp:Label ID="Header1" runat="server" /></td>
        <td>
            <asp:Label ID="Header3" runat="server" /></td>
        <td>
            <asp:Label ID="Header2" runat="server" /></td>
    </tr>
</ItemTemplate>

同一个转发器是否可以动态绑定到异构数据源？如何在运行时指定标题模板和项目模板？仅用一个中继器控件和多个异构数据源就可以实现这一场景吗？

感觉下面的代码会对你有所帮助。

<asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="Repeater1_ItemDataBound">
    <HeaderTemplate>
        <tr class="">
            <asp:Repeater ID="Header1" runat="server">
                <ItemTemplate>
                    <th align="left"><%# Container.DataItem %>
                    </th>
                </ItemTemplate>
            </asp:Repeater>
        </tr>
    </HeaderTemplate>
    <ItemTemplate>
        <tr class="">
            <asp:Repeater ID="Item1" runat="server">
                <ItemTemplate>
                    <td><%# Container.DataItem %>
                    </td>
                </ItemTemplate>
            </asp:Repeater>
        </tr>
    </ItemTemplate>
</asp:Repeater>


protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e) 
    {
        if (e.Item.ItemType == ListItemType.Header)
        {
            Repeater headerRepeater = e.Item.FindControl("Header1") as Repeater;
            headerRepeater.DataSource = dt.Columns;
            headerRepeater.DataBind();
        }

       if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
        {
            Repeater columnRepeater = e.Item.FindControl("Item1") as Repeater;
            var row = e.Item.DataItem as System.Data.DataRowView;
            columnRepeater.DataSource = row.Row.ItemArray;
            columnRepeater.DataBind();
        }
    }

或以其他方式使用 2 个不同的用户控件。第一个用户控件包含中继器 1，第二个包含中继器 2。然后在代码后面动态添加这些中继器到您的页面