'Join' expected
A Group Join clause has been specified without a Join keyword.
Error ID: BC36631
To correct this error
Add the Join keyword to the Group Join clause, as shown in the following example:
Dim query = From var1 In collection1 _ Join var2 In collection2 _ Group Join var3 In collection3 _ On var2.ID Equals var3 Into Matches = Group _ On var1 Equals var2.ID _ Select JoinID = var1, var2.Name, Matches
See Also
Tasks
How to: Combine Data with LINQ by Using Joins (Visual Basic)
Concepts
Introduction to LINQ in Visual Basic
Reference
Group Join Clause (Visual Basic)