In LINQ to SQL, you can easily insert data into a database by adding objects to Table<TEntity> collection and then call SubmitChanges() method. LINQ to SQL will translate your changes into the appropriate SQL INSERT commands.
The following code creates a customer object and inserts it into the Customers table.
using (var db = new CustomerDataContext(@"Data Source=(localdb)\ProjectsV13;Initial Catalog=CustomerDB;"))
{
var customer = new Customer()
{
FirstName = "Maria",
LastName = "Anders",
Address = "Obere Str. 57"
};
db.Customers.InsertOnSubmit(customer);
db.SubmitChanges();
}