C # xml operations

C # xml operations

There is a class in system. XML that can operate XML

(There are very few records of these classes on the Internet. It may be because there are many classes. msdn Introduction)

 

Create a New XML

Xmldocument xmldoc = New Xmldocument ();
 //  Add the XML declaration section to the header of the XML document  
 Xmlnode = xmldoc. createnode (xmlnodetype. xmldeclaration, "" , "" );
Xmldoc. appendchild (xmlnode );
//  Create Root Node  
 Xmlelement root = xmldoc. createelement ( "  Root  " );
Root. innertext = "  I am a root node  " ;
Xmldoc. appendchild (Root );

Xmldoc. Save ( @"  D: \ My Documents ents \ Visual Studio 2010 \ projects \ webapplication2 \ webapplication2 \ test. xml " );

The generated XML is like this.

 
<?XML version = "1.0"?>
<Root>I am a root node</Root>
 

 

Another method for creating XML

Xmldocument xmldoc =NewXmldocument ();
Xmldoc. loadxml (
"<? XML version = \ "1.0 \" encoding = \ "UTF-8 \"?>"+
"<Root> I am the root node </root>"
);
Xmldoc. Save (@"D: \ My Documents ents \ Visual Studio 2010 \ projects \ webapplication2 \ webapplication2 \ test. xml");
 

Read XML

XML is as follows

 <? XML version = "1.0" encoding = "UTF-8"  ?> 
 <  Root  ID  = "Root"  > 
 <  List  Num  = "0"  > 
 <  Name  Type  = "String" > Minglecun </  Name  > 
 <  Age  Type  = "Number"  > 55 </  Age  > 
 </  List  > 
 < List  Num  = "1"  > 
 <  Name  Type  = "String"  > Huluwa </  Name  > 
 <  Age  Type  = "Number" > 1 </  Age  > 
 </  List  > 
 </  Root  > 

 

Xmldocument xmldoc = New Xmldocument ();
Xmldoc. Load ( @" D: \ My Documents ents \ Visual Studio 2010 \ projects \ webapplication2 \ webapplication2 \ test. xml  " );
 //  Read a node  
 Xmlnode = xmldoc. selectsinglenode ( "  // Root  " );
Console. writeline (xmlnode. innerxml );
Console. writeline ( "  ------------------------------------------------  " );
Xmlnode xmlnode1 = xmldoc. selectsinglenode ( "  // Root // list  " );
Console. writeline (xmlnode1.innerxml );
Console. writeline ( "  ------------------------------------------------  " );
 //
 Xmlnodelist xn0 = xmldoc. selectsinglenode ( "  // Root  " ). Childnodes;
Foreach (Xmlnode Node In Xn0)
{
Console. writeline ( "  ==========  " + Node. Name );
}