C# Error CS1031 – Type expected

C# Error

CS1031 – Type expected

Reason for the Error & Solution

Type expected

A type parameter is expected.

Example

The following sample generates CS1031:

// CS1031.cs  
namespace x  
{  
    public class ii  
    {  
    }  
  
    public class a  
    {  
        public static operator +(a aa)   // CS1031  
        // try the following line instead  
        // public static ii operator +(a aa)  
        {  
            return new ii();  
        }  
  
        public static void Main()  
        {  
            e = new base;   // CS1031, not a type  
            e = new this;   // CS1031, not a type  
            e = new ();     // CS1031, not a type  
        }  
    }  
}