Duke SiteWalker

Artigo
05/17/2005

I find that in almost every SharePoint tool I’m writing these days I have to traverse the webs in a site collection, thus, I tend to duplicate the following logic.

Get an SPSite of the site collection
Start at SPSite.RootWeb,
Do something with the Web
Enumerate the SPWeb.Webs collection of subwebs
1. Do something with the folders in the web
2. Do something with the lists in the web
3. For this web, repeat step 4 for each subweb.
Etc.

Well, I’m tired of duplicating code, so I took the time this morning to write a Site Walker that uses Delegates to call back to the apps “DoSomething” methods.

First, here’s the meat of the SiteWalker class, and then a small application using it called DukeSiteWalkerl;

SiteWalker.cs

using System;

using Microsoft.SharePoint;

using Microsoft.SharePoint.Administration;

namespace SPSiteWalker

{

class SiteWalker

{

public delegate bool SPSiteCollectionDelegate(SPSiteCollection sc, object o);

public delegate bool SPSiteDelegate(SPSite site, object o);

public delegate bool SPWebDelegate(SPWeb web, object o);

public delegate bool SPFolderDelegate(SPFolder folder, object o);

public delegate bool SPListDelegate(SPList list, object o);

public SPSiteCollectionDelegate m_SiteCollectionDelegate = null;

public SPSiteDelegate m_SiteDelegate = null;

public SPWebDelegate m_WebDelegate = null;

public SPFolderDelegate m_FolderDelegate = null;

public SPListDelegate m_ListDelegate = null;

public bool WalkSiteCollection(SPSiteCollection sc, object o)

{

m_SiteCollectionDelegate(sc,o);

foreach(string strSite in sc.Names)

{

string strURL = sc.VirtualServer.Url.ToString() + strSite;

SPSite site = new SPSite(strURL);

m_SiteDelegate(site,o);

WalkSite(site,o);

site.Close();

}

return true;

}

public bool WalkSite(SPSite site, object o)

{

m_SiteDelegate(site,o);

WalkWeb(site.RootWeb,true, o);

return true;

}

public bool WalkWeb(SPWeb web, bool bRecurseWebs, object o)

{

try

{

m_WebDelegate(web,o);

foreach(SPList list in web.Lists)

{

WalkList(list,o);

}

foreach(SPFolder folder in web.Folders)

{

WalkFolder(folder,true,o);

}

catch(Exception e)

{

Console.WriteLine(e.Message);

}

// do the same for all subwebs

if(bRecurseWebs)

{

foreach(SPWeb subweb in web.Webs)

{

WalkWeb(subweb,true,o);

}

return true;

}

public bool WalkFolder(SPFolder folder,bool bRecurseFolders, object o)

{

try

{

m_FolderDelegate(folder,o);

if(bRecurseFolders)

{

foreach(SPFolder subfolder in folder.SubFolders)

WalkFolder(subfolder,true,o);

}

catch(Exception e)

{

Console.WriteLine(e.Message);

}

return true;

}

public bool WalkList(SPList list, object o)

{

// List Stuff

m_ListDelegate(list,o);

return true;

}

As you can see, we simply “Walk” over all the sites/webs/subwebs and call the associated delegate to perform “Application Specific” actions on them.

Here is the example application DukeSiteWalker.cs that utilizes the SiteWalker.

DukeSiteWalker.cs

using System;

using Microsoft.SharePoint;

using Microsoft.SharePoint.Administration;

using SPSiteWalker;

namespace DukeSiteWalker

{

class AppClass

{

[STAThread]

static void Main(string[] args)

{

SiteWalker walker = new SiteWalker();

walker.m_SiteCollectionDelegate = new SPSiteWalker.SiteWalker.SPSiteCollectionDelegate(AppClass.MySiteCollectionMethod);

walker.m_SiteDelegate = new SiteWalker.SPSiteDelegate(AppClass.MySiteMethod);

walker.m_WebDelegate = new SiteWalker.SPWebDelegate(AppClass.MyWebMethod);

walker.m_FolderDelegate = new SiteWalker.SPFolderDelegate(AppClass.MyFolderMethod);

walker.m_ListDelegate = new SiteWalker.SPListDelegate(AppClass.MyListMethod);

SPGlobalAdmin gAdmin = new SPGlobalAdmin();

foreach(SPVirtualServer vs in gAdmin.VirtualServers)

{

if(vs.State == SPVirtualServerState.Ready)

walker.WalkSiteCollection(vs.Sites,System.Console.Out);

}

// If I wanted to just walk a single site collection

// SPSite site = new SPSite("https://localhost");

// walker.WalkSite(site,System.Console.Out);

// site.Close();

// site.Dispose();

}

private static bool MySiteCollectionMethod(SPSiteCollection sc,object o)

{