How can I reset the Identity column of a table to zero in SQL Server?
Edit:
How can we do it with LINQ to SQL ?
Use the LINQ to SQL ExecuteCommand to run the required SQL.
db.ExecuteCommand("DBCC CHECKIDENT('table', RESEED, 0);");
LINQ is a data-source agnostic query language and has no built-in facilities for this kind of data-source specific functionality. LINQ to SQL doesn't provide a specific function to do this either AFAIK.