Here's the scenario:
You developed an application that uses "LINQ to SQL" with a connection string name (say aa-db). In production you want the name to be different (say bb-db). What do you need to do to change the connection string name?
1) Open the *.dbml file in a text editor.
2) Change the "SettingsPropertyName=" property to the new name
3) Open the "*.designer.cs" file that is associated with the LINQ class and change the value of global::System.Configuration.ConfigurationManager.ConnectionStrings[...].
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