Compiler Error CS1670

params is not valid in this context

A number of C# features are incompatible with variable argument lists, and do not allow the params keyword, including the following:

• Parameter lists of anonymous methods

• Overloaded operators

Example

The following sample generates CS1670:

// CS1670.cs  
public class C  
{  
    public bool operator +(params int[] paramsList)  // CS1670  
    {  
        return false;  
    }  
  
    static void Main()  
    {  
    }  
}