ASP.NET 2.0 C# Generics List Collection Folder Control

This page demonstrates using a Generics List Collection in C# how to retrieve all folders, subfolder, and folders within subfolders.

/**//*

Inthisexample,wearegettingallfolders,subfolders,andfolderswithin

subfolders.Thenwecanloadthemintoanycontrol.

*/



usingSystem;

usingSystem.Collections.Generic;

usingSystem.IO;

usingSystem.Web.UI;



namespaceStrongTypes

...{

publicclassFolderExample

...{

privateList<string>ListFolders=newList<string>();



publicvoidPopulateFolders(stringstrFolderLocation,Controlctrl)

...{

LoadFolders(strFolderLocation);



foreach(stringstrinListFolders)

...{

//AddcodeheretoaddfoldersandsubfolderstoControl

}

}



privatevoidLoadFolders(stringstrFolderLocation)

...{

DirectoryInfodir=null;



try

...{

dir=newDirectoryInfo(strFolderLocation);



FileSystemInfo[]info=dir.GetFileSystemInfos();



foreach(FileSystemInfofsiininfo)

...{

if(fsiisDirectoryInfo)

...{

ListFolders.Add(fsi.FullName);

}



AddDirectoriesToList(info);

}

}

catch

...{

if(strFolderLocation==null)

...{

thrownewNullReferenceException("ThepropertyFileLocationcannotbenull");

}



if(!(dir.Exists))

...{

thrownewDirectoryNotFoundException("Thedirectoryyouaretryingtosearchdoesnotexist.");

}

}

}



privatevoidAddDirectoriesToList(FileSystemInfo[]info)

...{

foreach(FileSystemInfofsiininfo)

...{

if(fsiisDirectoryInfo)

...{

if(!(ListFolders.Contains(fsi.FullName)))

...{

ListFolders.Add(fsi.FullName);

}



DirectoryInfodir=(DirectoryInfo)fsi;

AddDirectoriesToList(dir.GetFileSystemInfos());

}

}

}

}

}