小弟编写了下面的程序
using System;
using System.Reflection;

[assembly:AssemblyVersionAttribute("1.0.0.0")]
[assembly:AssemblyTitleAttribute("Program1")]

namespace P
{
    class Program1
    {
        string pS;
        public string inS
        {
            get
            {
                return pS;
            }
            set
            {
                pS = inS;
            }
        }

        public void  u(out string uS)
        {
            uS=pS.ToUpper ();
        }
        public static void Main()
        {
        }
    }
}
为什么编译的时候会告诉我
错误    重复的“AssemblyTitleAttribute”属性
错误    重复的“AssemblyVersionAttribute”属性