C#编程-22：判断文件是否存在并创建文件（夹）_彭世瑜_新浪博客

string path = @"D:\abc"; string fileName = "123.txt";

if (!Directory.Exists(path)) {     Directory.CreateDirectory(path); }

if (!File.Exists(path + "\\" + fileName)) {     File.Create(path + "\\" + fileName); }