Insert Update & Delete using LINQ to SQL

DBClassesDataContext db = new DBClassesDataContext();
            Table tblContact = new Table();

            tblContact.FirstName = txtFN.Text;
            tblContact.LastName = txtLN.Text;

            db.Tables.InsertOnSubmit(tblContact);
            db.SubmitChanges();
response.redirect("default.aspx");


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CREATE TABLE Persons
(
ID int NOT NULL AUTO_INCREMENT,
LastName varchar(255) NOT NULL,
FirstName varchar(255),
Address varchar(255),
City varchar(255),
PRIMARY KEY (ID)
)

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