save data to DB

I am using Visual Studio 2010 with SQL Server Express and LIN开发者_运维问答Q to SQL

The application runs correctly when inserting data into the database during application execution. The data is inserted to the database. But, when I stop the application and click show table data in server explorer I do not see any data. Why is this so?

Here the values for the copy output direction properties for my database solution items:

database1.mdf: copy always
database1Dataset.xsd: do not copy
dataclasses1.dbml: do not copy

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database1.mdf=====> properties =======>copy output direction=copy always

This is why. You are editing a copy of the database each time you start a new debug session. Set it to do not copy and your updates will persist.