Only write to page if property != null, in a PageList

Henrik Mathiesen

Vote:

Hi all!

I have a PageList and it lists propertys from child pages, like this.

Now, if the editor havent written anything in the property on the child's page type I dont want it to be written on the page. So, I tried

<% if (Container.CurrentPage["EventDate"] != null) { %>
<%# Container.CurrentPage["EventDate"] %>
<% } %>

But that doesnt work. Neither does (because it is always null)

<% if (CurrentPage["EventDate"] != null) { %>
<%# Container.CurrentPage["EventDate"] %>
<% } %>

How do I solve it? And please, as easy as possible! =) Thank you very much.

#55319

Nov 28, 2011 15:53

Henrik Mathiesen

Vote:

The intel says that 'System.ComponentModel.Container' will bind it, but it doesnt work!

#55324

Nov 28, 2011 17:19

Vote:

Maybe something like this:

<%# Container.CurrentPage["EventDate"] != null ? ((DateTime)Container.CurrentPage["EventDate"]).ToString() : string.Empty%>

#55325

Nov 29, 2011 0:11

Henrik Mathiesen

Vote:

Johan: many many thanks. However that code gave some casting error. But I tried this and it worked:

<%# Container.CurrentPage["EventDate"] != null ? (Container.CurrentPage["EventDate"]).ToString() : string.Empty %>

Can you also write this?

<%# Container.CurrentPage["EventDate"] != null ? (Container.CurrentPage["EventDate"]) : null %>

There is however a little caveat. You see the code is like this really:

So, if I also want to get rid of the h3? But you solution will certenly work, and Iam very gratefull. Thanks.

#55326

Nov 29, 2011 8:20

Henrik Mathiesen

Vote:

Ah! You can do like this:

<%# Container.CurrentPage["EventDate"] != null ? ("<htmlCode>"+Container.CurrentPage["EventDate"]).ToString() : string.Empty%>

#55327

Nov 29, 2011 8:27

Vote:

I just assumed EventDate was a DateTime-property... If it's just a short string:

<%# Container.CurrentPage["EventDate"] != null ? "<htmlCode>" + Container.CurrentPage["EventDate"].ToString() + "</htmlCode>" : string.Empty%>

Or use a PlaceHolder if you need your HTML more readable and not inside code blocks:

<asp:PlaceHolder runat="server" Visible='<%# Container.CurrentPage["EventDate"] != null%>'>

</asp:PlaceHolder>

#55330

Nov 29, 2011 9:01

Henrik Mathiesen

Vote:

Johan: Thank you!! Awesome. Splendid. So helpful. Have a superb day.

#55333

Nov 29, 2011 9:58