将用户控件动态添加到页面

Question

我有一个面板，我正在尝试从后面的代码添加用户控件。问题是代码运行后加载的控件不会出现在面板中。我错过了什么吗？

    <div id="ShippingDetails" runat="server" visible="true">
        <asp:Panel ID="Panel1" runat="server"></asp:Panel>
    </div>
</form>
</asp:Content>

代码背后：

protected void Page_PreRender(object sender, EventArgs e)
{
    if (OrderSearch1.SelectedValues != null)
    {
        InitializeShippingDetailControls();
    }
}

public void InitializeShippingDetailControls()
{
     admin_InputControl control = new admin_InputControl();
     control.InitializeInputControl(ShippingDetailInputControls, new DataModels.EDIOrderShipmentInfo(), 1, "Shipment Details");
     Panel1.Controls.Add(control);
}

Answer 1

如果您正在处理真正的用户控件，显然您需要使用LoadControl。将我的代码更改为..

    admin_InputControl control = (admin_InputControl)LoadControl("../controls/InputControl.ascx");
    control.InitializeInputControl(ShippingDetailInputControls, new DataModels.EDIOrderShipmentInfo(), 1, "Shipment Details");
    Panel1.Controls.Add(control);