Add user control after page is loaded

Question

I am trying to add dynamically a user control I created to an aspx page after it is loaded. I tried sending an ajax request to a handler that used RenderControl function and sent back the control's html. I appended it to the DOM using javascript.

The problem is that some of the controls must go through their Page_Load function and that doesn't happen when using RenderControl function.

Does anyone have any idea how can I do that?

Answer 1

Why dont you load and add the user control dynamically to the page?

Answer 2

I don't think you can do this that way.

Your controls don't go through their Page_Load, because they are not added to any control. All you are doing is rendering their html (using RenderControl) and loading it using javascript. There's no place for Page_Load event.

I would use UpdatePanel instead in that way:

<asp:UpdatePanel>
    <ContentTemplate>
        <asp:Panel ID="pnlDynamic" />
    </ContentTemplate>
</asp:UpdatePanel>

and then in code behind add your dynamic controls to panel

pnlDynamic.Controls.Add(new YourControl());

Answer 3

try this:

System.Web.UI.Page page = new System.Web.UI.Page();
CustomUserControl userControl = page.LoadControl("~/control.ascx") as CustomUserControl;
if (userControl == null)
{
//error
}

userControl.ArticleId = id;
//call any other properties or methods you need

page.Controls.Add(userControl);
System.IO.StringWriter sw = new System.IO.StringWriter();
HttpContext.Current.Server.Execute(page, sw, false);
responseString = sw.ToString();

hope this will help!