Question

I can’t find a good article that solves my following issue, so if anyone has the answer or just a link to the answer I would be happy.

Let’s say I have created a UserControl called MyUserControl.ascx

I reg it in ascx with prefix uc

<uc:MyUserControl runat='server' id='uc_test' SomeProperty='true'> <InnerContent>   ...   Controls added in here....   <asp:Button runat='server' id='btn_test' Text='Test'>   ... <InnerContent> </uc:MyUserControl> 

I know how to create a usercontrol and how to add properties and events to it.

BUT how do I make the ‘InnerContent’ field in my usercontrol?

I have no clue so please be a little specific 🙂

Cheers

Answer 1

You usually don’t do that with user controls (.ascx). It’s completely possible though. This is mostly done in custom controls you build using code files. To accomplish it, you declare your control class like:

[ParseChildren(true), PersistChildren(false)] public class MyControl : Control, INamingContainer {     [PersistenceMode(PersistenceMode.InnerProperty),     TemplateContainer(InnerContentTemplate)]    public ITemplate InnerContent { get; set; }     void CreateChildControls() {         InnerContentTemplate temp = new InnerContentTemplate();        InnerContent.InstantiateIn(temp);        Controls.Add(temp);    } }  public class InnerContentTemplate : Control, INamingContainer {  } 

For .ascx files you could inherit it from UserControl instead.

Templating in ASP.NET is a rather complex thing. It’s not really possible to explain everything in an answer. You should look at some samples and documentation.