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Compiler Warning (level 1) C4944

'symbol' : cannot import symbol from 'assembly1': as 'symbol' already exists in the current scope

A symbol was defined in a source code file and then a #using statement referenced an assembly that also defined the symbol. The symbol in the assembly is ignored.

The following samples generate C4944:

// C4944.cs
// compile with: /target:library
// C# source code to create a dll
public class ClassA
   public int i;

and then

// C4944b.cpp
// compile with: /clr /W1
class ClassA
   int u;

#using <mscorlib.dll>
#using "C4944.dll"   // C4944 ClassA also defined C4944.dll

int main()
   ClassA *x = new ClassA();
   x->u = 9;