Insertion into SharePoint List using SharePoint Linq

var context = new LinqSampleDataContext(SPContext.Current.Web.Url);
            EntityList<LoginItem> login_Insert =
context.GetList<LoginItem>("Login");
            LoginItem NewREc = new LoginItem()
{Title=txtUserName.Text,Password=txtPassWord.Text };
            login_Insert.InsertOnSubmit(NewREc);
            context.SubmitChanges();
            txtUserName.Text = "";
            txtPassWord.Text = "";
            this.Controls.Add(new LiteralControl("Insertion
Successful"));