为什么不能在Repeater中访问UserControl自定义属性？

Question

I'm doing a Data Binding for a Repeater:

<asp:Repeater ID="rptAlumni" runat="server" OnItemDataBound="rptAlumni_DataBinding">
    <ItemTemplate>
        <uc1:AlumnoBox runat="server" ID="AlumnoBox" />
    </ItemTemplate>
</asp:Repeater>

protected void rptAlumni_DataBinding(object sender, RepeaterItemEventArgs e)
{
    var item = (UserControl)e.Item.FindControl("AlumnoBox");
}

but I can't do item.MyCustomID for example, I can't see that property. Instead, if I move the UserControl outside the Repeater and I do AlumnoBox.MyCustomID inside the Page Load it works as well.

Where am I wrong?

Answer 1

Your UserControl inherits from UserControl but you have added addtional properties like MyCustomID . Of course you can't access those properties if you cast to UserControl since the base class does not know them. Instead cast to the right type AlumnoBox :

var item = (context_box_AlumnoBox) e.Item.FindControl("AlumnoBox"); 
int id = item.MyCustomID;