Open an aspx web page design view the following questions

Error: failed to "design" trying to open. The "<%..." value "...%>" block in order to extend the value up in different ways ..

Part Source:

 <title> 
     <% = Title %>------ here, should be a string variable 
 </ title> 
 <table width = "100%" cellpadding = "6" cellspacing = "1" bgcolor ='<%= Config [0] [ "Forum_Config_TableBgcolor"]. ToString ()%>'>--- here! ! ! ! ! 
     <tr bgcolor ='<%= Config [0] [ "Forum_Config_HeadBgcolor"]. ToString ()%>'>------ still here .... 
       <td width="30" align="center"> 
         .................................. 
 </ table> 
 <TABLE CellSpacing="0" cellPadding="0" width="95%" align="center" border="0"> 
 <tr> 
 <td> 
 <asp: Label ID = "OnlineName" Runat = "server" Visible = "False" text ='<%# DataBinder.Eval (Container, "DataItem.Forum_Online_Name") %>'>--- here! ! 
 </ asp: Label> 
 <asp: Label id = "OnlineClass" runat = "server" Visible = "False" text ='<%# DataBinder.Eval (Container, "DataItem.Forum_Online_Class") %>'>--- here! ! 
 </ asp: Label> 
 .................................................. ........ 
 </ TABLE> 

Question:

(1) <% # DataBinder.Eval (Container, "DataItem.Forum_Online_Name")%>

This is a variable or control, how do I not find where?

(2) <% # DataBinder.Eval (Container, "DataItem.Forum_Online_Class")%>

Occurrences of very mundane, problems such as (1)

(3) With these Hasty, design view, not open, what is the how to do?

Edited January 26, 201016 yr by Sam G
added [code] tags