Ambiguous reference in Stream

Question

This is the webservice method i have

 LoadImageFromDB(int ID, ref Stream streamReturnVal)

I have this on the top of the section using Stream = System.IO.MemoryStream;

Whenever i consume this method(update web reference) from a web application, i get this error

 'Stream' is an ambiguous reference between 'System.IO.Stream' and 'WebReference.Stream'

Any thoughts?

In webservice class

using Stream = System.IO.MemoryStream;
LoadImageFromDB(int ID, ref Stream streamReturnVal);

In web page where above webservice is consumed:

using WebReference;

Stream streamReturnVal = null;
streamReturnVal = new MemoryStream();

WebserviceInstanceName.LoadImageFromDB(100,streamReturnVal );

PS: Stream - is from System.IO.Stream

Answer 1

So this is caused when you have two namespaces that contain Types with the same name within a single piece of code.

So this section

using Stream = System.IO.MemoryStream;
LoadImageFromDB(int ID, ref Stream streamReturnVal);

should explicitly define what kind of Stream is being passed.

It should probably look something like this

using Stream = System.IO.MemoryStream;
LoadImageFromDB(int ID, ref System.IO.Stream streamReturnVal);