error CS5001: 程序“c:\1.exe”未定义入口点 C# 中

Question

用命令提示符

Answer 1

error CS5001: 程序“c:\1.exe”未定义入口点

Answer 2

缺少 public static void Main()

Answer 3

http://msdn2.microsoft.com/zh-cn/library/1y814bzs(VS.80).aspx

Answer 4

public static void Main() 
public class Point
{
public int x, y;
public Point(int x, int y)
    {
this.x = x;
this.y = y;
}
}
public class Point3D: Point
{
public int z;
public Point3D(int x, int y, int z): base(x, y)
    {
this.z = z;
}
}

Answer 5

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Collections;
using System.Xml;
using Microsoft.Win32;
using System.Data.Sql;
using System.Threading;
using System.Configuration;
using Examples.Configuration;
namespace ConsoleApplication1
{
    class Program
    {
        public void xx()
        {
            int Sum = 0;
            for (int i = 0; i < 10; i++)
            {
                if ((i % 2) == 0)
                {
                    Sum = Sum + (i + 1);
                }
                else
                {
                    Sum = Sum - (i + 1);
                }
                System.Console.WriteLine(Sum.ToString());
            }
        }
入口点.
        static void Main(string[] args)        {
            Program p = new Program();
            p.xx();
            //ListTest tsetList = new ListTest();
            //FileINFO fileInfo = new FileINFO();
            //fileInfo.CreateTime = DateTime.Now;
            //fileInfo.Name = "name";
            // tsetList.Add(fileInfo);
            //aa a = new aa();
            //bb b = new bb();
            //cc c = new cc();
            //a.x += new aa.cc(b.log);
            //a.x += new aa.cc(c.log);
            //a.Process();
            Console.Read();            //byte x = Convert.ToByte("7F", 16);            //XmlWriter writer = XmlWriter.Create(@"e:\a.xml");            //writer.WriteStartDocument();            //writer.WriteStartElement("DriInfoList");
            //InsertValue(writer, @"C:\My Documents");            //writer.WriteEndElement();
            //writer.WriteEndDocument();
            //writer.Close();        }
        private static void InsertValue(XmlWriter writer, string path)
        {
            DirectoryInfo dir = new DirectoryInfo(path);            DirectoryInfo[] dirinfo = dir.GetDirectories();            foreach (DirectoryInfo f in dirinfo)
            {
                writer.WriteStartElement("DriInfo");
                writer.WriteAttributeString("path", f.FullName);
                InsertFile(writer, f.GetFiles());
                InsertValue(writer, f.FullName);
                writer.WriteEndElement();
            }
        }        private static void InsertFile(XmlWriter writer, FileInfo[] file)
        {
            foreach (FileInfo f in file)
            {
                writer.WriteStartElement("FileInfo");
                writer.WriteAttributeString("FileName", f.FullName);
                writer.WriteString(f.Name);                writer.WriteEndElement();
            }
        }    }    public class bb
    {        public void log()
        {
            Console.WriteLine("asa");
        }
    }    public class cc
    {
        public void log()
        {
            Console.WriteLine("ccc");
        }
    }
    public class aa
    {
        public delegate void cc();
        public event cc x;        public void Process()
        {
            Run();
        }
        public void Run()
        {
            if (x != null)
            {
                x();
            }
        }
    }
}

Answer 6

public static void Main() {}//这里少个一对大括号了，老兄啊 
public class Point 
{ 
public int x, y; 
public Point(int x, int y) 
    { 
this.x = x; 
this.y = y; 
} 
} 
public class Point3D: Point 
{ 
public int z; 
public Point3D(int x, int y, int z): base(x, y) 
    { 
this.z = z; 
} 
} 

Answer 7

namespace Program
{
   class Program
   {
      static void Main()
      {
         //入口代码
      }
   }
}