C#得到文件夹及文件大小

using System;


using System.Text;


using System.Runtime.InteropServices;


using System.IO;




namespace ConsoleApplication1




...{




    /**//// <summary>


    /// Class1 的摘要说明。


    /// </summary>


    class Class1




    ...{


        private DirectoryInfo di;


        private double tcount=0;


        private StringBuilder tname=new StringBuilder();




        /**//**//**//**//**//**//**//// <summary>


        /// 必需的设计器变量。


        /// </summary>




        [DllImport("kernel32")]


        private static extern long WritePrivateProfileString(string section,


            string key,string val,string filePath);


        [DllImport("kernel32")]


        private static extern int GetPrivateProfileString(string section,


            string key,string def, StringBuilder retVal,


            int size,string filePath);




        public Class1()




        ...{


            di=new DirectoryInfo("E:/单机游戏/魔兽3/");


            getdir(di);


            if(tcount<1978930000)


                dosth();


        }




        //如果魔兽3不在原目录里。就改配置文件


        public void dosth()




        ...{


            WritePrivateProfileString("Game2","Exe ","E:/单机游戏/魔兽3-冰封王座/war3.exe ","E:/对战平台/QQ对战平台/QBGames.ini");


            WritePrivateProfileString("Game4","Exe ","E:/单机游戏/魔兽3-冰封王座/war3.exe ","E:/对战平台/QQ对战平台/QBGames.ini");


            WritePrivateProfileString("Game5","Exe ","E:/单机游戏/魔兽3-冰封王座/war3.exe ","E:/对战平台/QQ对战平台/QBGames.ini");


            WritePrivateProfileString("游戏参数","魔兽争霸","E:/单机游戏/魔兽3-冰封王座/war3.exe ","E:/对战平台/VS竞技游戏平台/info/config.ini");


            WritePrivateProfileString("魔兽争霸III","UserExeFile","E:/单机游戏/魔兽3-冰封王座/war3.exe ","E:/休闲游戏/浩方对战平台/GameClient.ini");


            WritePrivateProfileString("魔兽RPG专区","UserExeFile","E:/单机游戏/魔兽3-冰封王座/war3.exe ","E:/休闲游戏/浩方对战平台/GameClient.ini");


            WritePrivateProfileString("寒冰王座","UserExeFile","E:/单机游戏/魔兽3-冰封王座/war3.exe ","E:/休闲游戏/浩方对战平台/GameClient.ini");


            WritePrivateProfileString("魔兽RPG(电信)","UserExeFile","E:/单机游戏/魔兽3-冰封王座/war3.exe ","E:/对战平台/浩方挤房版/GameClient.ini");


            WritePrivateProfileString("魔兽RPG(网通)","UserExeFile","E:/单机游戏/魔兽3-冰封王座/war3.exe ","E:/对战平台/浩方挤房版/GameClient.ini");


            WritePrivateProfileString("魔兽竞技场","UserExeFile","E:/单机游戏/魔兽3-冰封王座/war3.exe ","E:/对战平台/浩方挤房版/GameClient.ini");


        }


        


        //取得所有目录里文件的大小 


        public void getdir(DirectoryInfo path)




        ...{


            if(path.Name!="System Volume Information")




            ...{


                DirectoryInfo []dirs=path.GetDirectories();


                FileInfo[] files=path.GetFiles();


                for(int i=0;i<dirs.Length;i++)




                ...{


                    getdir(dirs[i]);


                }


                for(int i=0;i<files.Length;i++)




                ...{


                    tcount+=files[i].Length;


                }


            }


        }






        /**//// <summary>


        /// 应用程序的主入口点。


        /// </summary>


        [STAThread]


        static void Main(string[] args)




        ...{


            //


            // TODO: 在此处添加代码以启动应用程序


            //


            new Class1();


        }


    }


}



 先用ConsoleApplication 写。。再在解决方案中把启动方式改成应用程序就OK！