Alias to static class System.Configuration.ConfigurationManager;

Question

I would like to declare an alias to the static class : System.Configuration.ConfigurationManager;

I would like this alias to be available to all the methods of my class so I've tried to do that :

public class MyClass 
{
   using conf = System.Configuration.ConfigurationManager;

   public void MethodOne()
   {
      string appConfigStr = conf.AppSettings["someAppSettings"].ToString()
   }
}

But the above raises the following error : Invalid token 'using' in class, struct, or interface member declaration

Is there something I can do to alias this configuration manager class ?

p.s.w.g · Accepted Answer · 2013-02-19 14:25:43Z

1

using directives can be used to create an alias within the scope of the current .cs file.

using conf = System.Configuration.ConfigurationManager;

namespace MyNamespace
{
    public class MyClass 
    {
        public void MethodOne()
        {
            string appConfigStr = conf.AppSettings["someAppSettings"].ToString()
        }
    }
}

See this documentation for more information

answered Feb 19, 2013 at 14:25

p.s.w.g

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2 Comments

Arno 2501 Over a year ago

I give you the answer because you were the first to explain that I could use the using inside the file and outside the Namespace Thanks !

p.s.w.g Over a year ago

Either way works, actually. The docs give examples of using directives both inside and outside the namespace scope.

Daniel Hilgarth · Accepted Answer · 2013-02-19 14:23:22Z

1

You can't have a using statement inside a class. The error message you are getting is very specific in this regards.
To solve it, simply put it outside of your class:

using conf = System.Configuration.ConfigurationManager;

public class MyClass 
{
    public void MethodOne()
    {
        string appConfigStr = conf.AppSettings["someAppSettings"].ToString()
    }
}

answered Feb 19, 2013 at 14:23

Daniel Hilgarth

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Comments

Bryan Crosby · Accepted Answer · 2013-02-19 14:28:18Z

1

You must place that using statement outside of your class definition just like the compiler is telling you.

using conf = System.Configuration.ConfigurationManager;

public class MyClass 
{
   public void MethodOne()
   {
      string appConfigStr = conf.AppSettings["someAppSettings"].ToString()
   }
}

Please refer to the C# language specification under section 9.4 "Using directives".

answered Feb 19, 2013 at 14:28

Bryan Crosby

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Comments

Matías Fidemraizer · Accepted Answer · 2013-02-19 14:46:06Z

1

using to create aliases must be used outside a class scope, but in in the assembly or namespace scope!

// Here here here here here here :)
using conf = System.Configuration.ConfigurationManager;

public class MyClass 
{
   public void MethodOne()
   {
      string appConfigStr = conf.AppSettings["someAppSettings"].ToString()
   }
}

edited Feb 19, 2013 at 14:46

answered Feb 19, 2013 at 14:23

Matías Fidemraizer

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