How can I check if a SQL Server 2005 TEXT column is null or empty using LINQ To Entities?

I'm new to LINQ and I'm trying to check if a TEXT column is empty or empty (like String.IsNullOrEmpty).

from c in ...
...
select new
        {
            c.Id,
            HasBio = !String.IsNullOrEmpty(c.bio)
        }

      

        
        
        
      

    

Attempting to use the above query throws a SqlException:

Argument data type text is invalid for argument 1 of len function.

      

        
        
        
      

    

The generated SQL looks like the following:

CASE WHEN ( NOT (([Extent2].[bio] IS NULL) OR (( CAST(LEN([Extent2].[bio]) AS int)) = 0))) THEN cast(1 as bit) WHEN (([Extent2].[bio] IS NULL) OR (( CAST(LEN([Extent2].[bio]) AS int)) = 0)) THEN cast(0 as bit) END AS [C1]

      

        
        
        
      

    

LEN does not apply to TEXT columns. I know DATALENGTH must be used for them ...

How do I get LINQ to create such a thing? Or any other workaround to check if the text column is null or empty.

Thanks!

Update

I came up with this

HasBio = c.bio.Substring(0, 1).Length > 0

      

        
        
        
      

    

but this is a bit ugly though, any other options?