Password protecting an existing SQL Server Compact 4 database file

Can someone tell me how to password protect an existing SQL Server CE 4 file?

Solution

In the SqlCeEngine.Compact method, specify a password. Or you can use SqlCeCmd from a command line:

sqlcecmd40 
-d "Data Source=C:\test.sdf;" 
-z "Data Source=;Password=secret"

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