使用LoadControl + UserControl时，Asp.net图表在Page_Load中不起作用

Question

I have a UserControl which contains an asp.net Chart. If I reference the user control statically in the page, the chart displays, ie:

<uc:UserControl1 id="UserControl1" runat="server" />

However, if I load the user control from the codebehind in the Page_Load event, the Chart does not display:

Panel1.Controls.Add(this.LoadControl("UserControl1.ascx"));

I have other controls in the user control such as a GridView, and both of the above methods work for those controls. The only control that isn't working is the asp.net Chart control.

Any ideas?

Answer 1

当您在后面的代码中实例化动态创建的用户控件时，仍然必须将引用设置为aspx页面。

<%@ Reference Control="UserControl.ascx" %>