how to pass connection string EnterpriseLibraryContainer by using class in C# win form?

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C#

Database oDB = EnterpriseLibraryContainer.Current.GetInstance<Database>("MultipleDBDynamicScriptWithCode.Properties.Settings.mMaster1ConnectionString");

In above connection string to connect the database which is declare in app.config file.

but i want like : full connection string in Database oDB... not only name of connection string.

Thanx in advance....