C#常用IO操作

文件夹

创建文件夹

//如果文件夹路径不存在则创建文件夹
if (!Directory.Exists(path))
    Directory.CreateDirectory(path);

递归创建文件夹

        public void createdir(string fullpath)
        {
            if (!File.Exists(fullpath))
            {
                string dirpath = fullpath.Substring(0, fullpath.LastIndexOf('\\'));
                //string[] pathes = dirpath.Split('\\');
                string[] pathes = fullpath.Split('\\');
                if (pathes.Length > 1)
                {
                    string path = pathes[0];
                    for (int i = 1; i < pathes.Length; i++)
                    {
                        path += "\\" + pathes[i];
                        //如果文件夹路径不存在则创建文件夹
                        if (!Directory.Exists(path))
                            Directory.CreateDirectory(path);
                    }
                }
            }
        }

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