错误:没有为类型'System.Diagnostics.Process‘和'System.Diagnostics.Process’定义运算符'<>‘

using System;
using System.Diagnostics;

class Program
{
    static void Main()
    {
        Process process1 = new Process();
        Process process2 = new Process();

        if (process1.Equals(process2))
        {
            Console.WriteLine("process1 and process2 are equal");
        }
        else
        {
            Console.WriteLine("process1 and process2 are not equal");
        }
    }
}