Cannot insert explicit value for identity column in table when IDENTITY_INSERT is set to OFF

Problem: I worked with VB ASP.NET LINQ. I added new table in LINQ model and found this error message:

Cannot insert explicit value for identity column in table when IDENTITY_INSERT is set to OFF.

Solution:

http://alexeyzimarev.blogspot.com/2011/03/identityinsert-is-set-to-off-issue.html