Niu renmo ---- use LINQ to query sitemap in ASP. NET

There is nothing today. I can see on the Internet that using LINQ to XML to operate sitemap. I feel very useful. I will write it out and share it with you. Although it is very simple, I still want to write it, it may be helpful for people to do projects in the future. If you are a normal person, you can leave it alone. If you are a beginner, you can check it out;

1. First, create a web. sitemap XML file;CodeAs follows:

 <?  XML  Version  = " 1.0 " Encoding  = " UTF-8 " ?> <  Sitemap  Xmlns  = "Http://schemas.microsoft.com/AspNet/SiteMap-File-1.0 " > <  Sitemapnode  Title  = " My favorites " > <  Sitemapnode  Title  = " Favorite sites " > <  Sitemapnode  Title  = "ASP. NET home " URL  = " Http://www.asp.net " /> <  Sitemapnode  Title  = " ASP. NET articles " URL  = " Http://www.dotnetcurry.com " /> <  Sitemapnode  Title = " Windows Client " URL  = " Http://www.windowsclient.net " /> <  Sitemapnode  Title  = " Silverlight " URL  = " Http://silverlight.net " /> </  Sitemapnode > <  Sitemapnode  Title  = " Favorite blogs " > <  Sitemapnode  Title  = " Scottgu blog " URL  = " Http://weblogs.asp.net/scottgu " /> <  Sitemapnode Title  = " Technology blog " URL  = " Http://www.devcurry.com " /> <  Sitemapnode  Title  = " SQL blog " URL  = " Http://www.sqlservercurry.com " /> < Sitemapnode  Title  = " Food lovers " URL  = " Http://foodatarian.com " /> </  Sitemapnode  > <  Sitemapnode  Title  = " Favorite social sites " > < Sitemapnode  Title  = " Twitter " URL  = " Http://twitter.com/ " /> <  Sitemapnode  Title  = " Facebook " URL  = " Http://www.facebook.com "/> <  Sitemapnode  Title  = " LinkedIn " URL  = " Http://www.linkedin.com " /> <  Sitemapnode  Title  = " Orkut " URL  = " Http://www.orkut.com " /> </  Sitemapnode  > </  Sitemapnode  > </  Sitemap  > 

2. in step 2, we add a control to the page file. Here we use bulletedlist and set its display mode to hyperlink. The Code is as follows:

 <  Head  Runat  = "Server"> <  Title  > </  Title  > </ Head  > <  Body  > <  Form  ID  = "Form1"  Runat  = "Server"> <  Div  > <  ASP  :  Bulletedlist  ID  = "Linklist"  Displaymode = "HYPERLINK"  Runat  = "Server"> </  ASP  :  Bulletedlist  > </  Div  > </  Form  > </  Body  > </  Html  > 

 
3. Use LINQ to XML to read all the URLs in the XML file. The Code is as follows:
 

# Region use LINQ to display all URLsPublic voidShowurl (){XelementXelement =Xelement. Load (server. mappath ("Web. sitemap"));VaRUrllist = xelement. descendants (). attributes (). Where (x => X. Name ="Url")
 

 
. Select (x => X. value );Foreach(StringItemInUrllist ){This. Linklist. Items. Add (item) ;}# endregion
 

 
The running result is as follows:
 

4. Use LINQ to XML to read the URL and title and display them. The Code is as follows:
 

 
# Region use LINQ to display URL and titlePublic voidShowurlandtitle (){XelementXelement =Xelement. Load (server. mappath ("Web. sitemap"));VaRUrlandtitle = xelement. descendants (). Where (element =>
 

Element. lastattribute. Name. localname. Contains ("Url"). Select (nD =>New{Title = Nd. Attribute ("Title"). Value, url = Nd. Attribute ("Url"). Value });Foreach(VaRItemInUrlandtitle ){ListitemI =NewListitem(Item. Title, item. url );This. Linklist. Items. Add (I) ;}# endregion
 

 
The running effect is as follows:
 

 
5. Read the specified data using LINQ to XML. The Code is as follows:
 

 
# Region: displays the specified dataPublic voidShowpart (){XelementXelement =Xelement. Load (server. mappath ("Web. sitemap"));VaRNode = xelement. descendants (). Where (SEL =>
 

 
(String) SEL. Attribute ("Title") ="Favorite social sites"). Selectnames (SEL => SEL. Elements (). Select (nD =>
 

New{Title = Nd. Attribute ("Title"). Value, url = Nd. Attribute ("Url"). Value });Foreach(VaRItemInNode ){ListitemI =NewListitem(Item. Title, item. url );This. Linklist. Items. Add (I) ;}# endregion
 

The running effect is as follows:

 

There are a lot of related operations on LINQ to XML.ArticleHere, I am also the most basic operation. If you are a beginner and think of a higher level, it is recommended that you go to msdn to learn;