[C #] recursively traverse a folder

<summary>////Recursively Get folder directory files///</summary>//<param name= "PathName" > folders that need to be traversed recursively lt;/param>//<param name= "filerule" > Traverse rule "delegate" </param> public static void Loopfolder (String p Athname, action<fileinfo> filerule) {if (string.            IsNullOrEmpty (PathName)) throw new ArgumentNullException (PathName);            queue<string> _pathqueue = new queue<string> ();            _pathqueue.enqueue (PathName);                while (_pathqueue.count > 0) {string _path = _pathqueue.dequeue ();                DirectorySecurity _pathsecurity = new DirectorySecurity (_path, accesscontrolsections.access);  if (!_pathsecurity.areaccessrulesprotected)//folder permissions are accessible {DirectoryInfo _directoryinfo =                    New DirectoryInfo (_path); foreach (DirectoryInfo dichild in _directoryinfo.getdirectories ()) {                       _pathqueue.enqueue (Dichild.fullname); } foreach (FileInfo file in _directoryinfo.getfiles ()) {file                    Rule (file); }}}} for example, use Csharptoolv2.loopfolder (@ "C:\Users\Administrator\Downloads\", (FileInfo file) + = {if (file. Extension.equals (". xls"))//Gets the Excel type file {Console.WriteLine (string. Format ("============{0}==============", file.                    FullName)); }                });

　　

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[C #] recursively traverse a folder