I have created a window application in c# 4.0, i used inbuilt sql database (.mdf datbase) in VS2010. earlier it was working fine. But now i noticed a problem in it.
1)user get added to the database, that is confirmed by ExecuteNoQuery return 1, as new one row is inserted.
2)Then next user is also added, as previous user id was 1, it check last id and increment id by 1. it also get successfully added.
3)Search operation also work properly.
But when i close the application, nothing get saved in database. I refresh database
after that also nothing happened.
So when i restart application, user id again start from 1.
When earlier add new database to project, only database with mdf and log file was created. But this time it also create DrishyaDatabaseDataSet.xsc files.(Once i deleted them , were they important)