ASP.NET数据源实例化类

如果只关心在集合中显示数据,则可以添加另一个静态方法,该方法返回对象readonlycollection并绑定到该对象。或者,您可以丢弃objectdatasource并在代码中执行它,例如:

    var myObj = ClassName.StaticMethod(someParam);
    MyRepeater.DataSource = myObj.Collection;
    MyRepeater.DataBind();

如果需要在类和集合中同时显示数据,则可以向ItemTemplate添加另一个中继器:

<asp:objectdatasource runat="server" id="myData" 
 selectmethod="StaticMethod" typename="ClassName">
    <selectparameters>
        <asp:parameter name="ParamName" defaultvalue="Value" />
    </selectparameters>
</asp:objectdatasource>

<asp:Repeater runat="server" datasourceid="myData" OnItemDataBound="Rep_ItemDataBound">
    <ItemTemplate>
        <%# Eval("SomeProperty") %>
        <ul>
            <asp:Repeater id="RepCollection" runat="server">
                <ItemTemplate>
                    <li><%# Eval("SomeCollectionProperty") %></li>
                </ItemTemplate>
            </asp:Repeater>
        </ul>
    </ItemTemplate>
</asp:Repeater>

itemdatabound方法类似于:

protected void Rep_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item)
    {
        var dataItem = (ClassName)e.Item.DataItem;
        var innerRepeater = (Repeater)e.Item.FindControl("RepCollection");
        innerRepeater.DataSource = dataItem.Collection;
        innerRepeater.DataBind();
    }
}