LINQ - How can we perform insert,delete,update by using LINQ concept

How can we perform insert,delete,update by using LINQ concept

If you want to do database CRUD actions via LINQ, you need to use either LINQ To SQL or Entity Framework (or any of a number of other ORMs that provide a LINQ interface. There is no provision in the ADO.NET providers themselves for implementing LINQ to perform database CRUD operations.

Yes, Peter is right. 

And to get some insight into what he meant, you can read the MSDN article titled "Insert, Update, and Delete Operations (LINQ to SQL)" @ http://msdn.microsoft.com/en-us/library/bb386931.aspx

Hope it helps.