LINQ to SQL not worked in Window application - winforms

I have created LINQ to SQL Class and trying to insert one record in application but unable to save record in database table in window application
Table Name : Test
I have two column in table
1) TID Type INT , Primary Key , Identity column
2) Title Type Varchar(50)
I have written below code to save new record in to table, Code running successfully without any error but record not store into application
My code is
DataClasses1DataContext db = new DataClasses1DataContext();
Test t = new Test();
t.Title = "Abhishek";
db.Tests.InsertOnSubmit(t);
db.SubmitChanges();
please help me to resolve this problem
Thanks,
Abhishek

Your code looks fine. But, just before calling SubmitChanges, take a look at db.GetChangeSet() and see if there are any pending inserts. There should be one. If there is one, take a look at the db.Log output and see what is getting sent to SQL Server.

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