C# 去除文件夹内部所有文件的只读属性，并清空文件夹。

void DeleteDirectory(string path)
        {
            var dir = new DirectoryInfo(path); 
            if (dir.Exists)
            {
                DirectoryInfo[] childs = dir.GetDirectories();
                foreach (DirectoryInfo child in childs)
                {
                    child.Attributes = FileAttributes.Normal & FileAttributes.Directory;
                    DeleteDirectory(path+"\\"+child.Name);
                }
                FileInfo[] files = dir.GetFiles();
                foreach (var file in files)
                {
                    file.Attributes = FileAttributes.Normal;
                }
                dir.Delete(true);
            }
            
        }