The return types for the following stored procedures could not be detected

Question

While drag-drop a stored procedure in dbml file I get this error:

Unknown Return Type
The return types for the following stored

Answer 1

Reason: Your Stored Procedure will be returning a complex type. that is, multiple results or uses a temp table.

Resolution

It entirely depends on what your Stored Procedure is doing. Useful links

1. http://odetocode.com/code/365.aspx
2. http://riteshkk2000.blogspot.com/2010/08/error-unknown-return-type-return-types.html