Is there a way to reference a certain class/interface/… by enclosing it with its namespace rather than a using directive “using namespace_name”?

Question

Is there a way to reference a certain class/interface/... by enclosing it with its namespace rather than a using directive "using namespace_name" ?!

As, I'm working on a website, which uses SAP .NET connector. I already added a reference for connector ddl, and while referencing its namespace "using namespace_name", or set class namespace to another one rather than connector namespace,

I got error regarding connector classes with that error message "The type or namespace couldn't be found, are you missing a using directive or an assembly reference?".

But while changing namespace name to connector namespace, everything is going well?!

// Set namespace to be IDestinationConfiguration interface namespace.
// Using this, everything is going well.
namespace SAP.Middleware.Connector
{
    public class ConnectorConfiguration : IDestinationConfiguration
    {
    }
}

// Using that way; it's not working, and got an error regarding IDestinationConfiguration even it belongs to refernced namespace.
using SAP.Middleware.Connector;

public class ConnectorConfiguration : IDestinationConfiguration
{
}

So, connector types forced me to set namespace of class to their namespace!

Is this possible? If so, how?

Answer 1

Is this what you are after?

public class ConnectorConfiguration: SAP.Middleware.Connection.IDestinationConfiguration
{

}

You can write all your code without usings if you like, you just need to use the fully qualified namespace name for every class/interface where the using isn't used.

If you try this:

using SAPTEST = SAP.Middleware.Connection;
namespace TestNamespace 
{
   public class ConnectorConfiguration: SAPTEST.IDestinationConfiguration
   {
   }
}

If that works, but it doesn't work if you remove SAPTEST, then IDestinationConfiguration must be declared in another namespace too.

Answer 2

I ran into this too and couldn't figure it out until I finally found the answer on a post at http://forums.sdn.sap.com/thread.jspa?threadID=1876430, the last line which said:

"Also, make sure your target framework is ".NET v4.0" NOT ".NET v4.0 Client" -- that way you get the System.Web namespace that is required."

My project was targeting 4.0 client target framework. Once I changed it to just .NET Freamework 4.0, all the references worked as expected.