How can i encrypt access .mdb file ,make it .mde and add password .what is the connection string in C#,how can i access it and how can i make backup file.

>How can i encrypt access .mdb file ,make it .mde and add password

Exploring Microsoft Access Security.

>what is the connection string in C#

The connection string that includes the source database name, and other parameters needed to establish the initial connection.

>how can i access it

ADO.NET Oledb provider classes.

>and how can i make backup file.

xcopy.

To encrypt access take a look at this:

http://support.microsoft.com/kb/305542

can you post your string??

String connStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + HttpContext.Current.Server.MapPath("App_Data/db1.mdb");
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