Question

I need data from 2 different databases. I have tried the following

var User = (from U in _db.TblUsers
                        where U.IsAdmin == false
                        select U).ToList();

var AspNewsUser = (from A in _dbAspNet.aspnet_Users                        
                   select A).ToList();


var result = (from U in User
              join A in AspNewsUser
              on U.UserID equals A.UserId
              select U);

But I get the following error message

The type of one of the expressions in the join clause is incorrect.
Type inference failed in the call to ‘Join’.

Answer 1

As you can see in the table schema of aspnet_Users, Userid is a uniqueidentifier (maps to GUID in entity framework). I bet that TblUsers.UserID has a different type (like int).