ConfigurationManager.ConnectionStrings["MyConnectionString"].ConnectionString cannot return connection string RRS feed

  • Question

  • Hi,

    I want to use  ConfigurationManager to return my connection string, but I got an error "Object reference not set to an instance of an object."

    The code is

      return (string)System.Configuration.ConfigurationManager.ConnectionStrings["MyConnectionString"].ConnectionString;

    My MyConnectionString is in the app.config saved in the same folder of cs file that issues the command.

    My application is WCF windows application. I am using vs2010.



    Thursday, May 19, 2011 6:20 AM


  • Hi,

    I found the problem. the configurationManager look at the app.Config under the host project rathr than the current project.

    Friday, May 20, 2011 3:45 AM

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