C# 判断文件和文件夹是否存在

方法1:

using System.IO;

if (File.Exists("d:\a.exe"))

{

//do something

}

if (Directory.Exists("d:\abc\"))

{

//do something

}

方法2:

DirectoryInfo aPath = new DirectoryInfo(PathName);

if (aPath.Exists)

{

//do something

}

FileInfo aFile = new FileInfo(PathName);

{

//do something

}