VC parses XML-uses the cmarkup class to parse XML

After trying to parse the XML string using MFC today, we have gained a lot. Let's sum up.
I am using the cmarkup class to operate on XML.

Cmarkup seems to have read the content from an XML file before parsing it. I wish to write my cstring into the XML file and then retrieve it.
If you want to directly read cstring, you can use

Cmarkup: setdoc method.
Other methods are used to repost the examples used by others, which is well written.
FromHttp://hi.baidu.com/yxifu/blog/item/fa1569225bda52a44623e8f0.html

(1) Let's talk about the special characters in XML first, and pay attention when entering them manually.

character entity
& amp; or &
'& apos; or'
& gt; or>
<& lt; or &
"& quot; or"

(2) cmarkup classSource code.

This is the latest version;

This is an example file on the official website. Take out the markup. cpp and markup. H files and import them to your project. The cmarkup class can be used;

:Http://www.firstobject.com/Markup83.zip

(3) create an XML document.

Cmarkup XML;
XML. addelem ("order ");
XML. addchildelem ("item ");
XML. cancelem ();
XML. addchildelem ("Sn", "132487a-j ");
XML. addchildelem ("name", "Crank casing ");
XML. addchildelem ("QTY", "1 ");
XML. Save ("C :\\Userinfo. Xml ");

The effect is as follows:

 <Order>   <Item>    <Sn>  132487a-j  </Sn>    <Name>  Crank Casing  </Name>    <Qty>  1 </Qty>    </Item>    </Order> 

 
(4) browsing specific elements
 

Cmarkup XML;XML. Load ("userinfo. xml ");
While(XML. findchildelem ("item") {XML. cancelem (); XML. findchildelem ("Sn"); cstring cssn = xml. getchilddata (); XML. findchildelem ("QTY ");IntNqty = atoi (XML. getchilddata (); XML. outofelem ();}
 

 
(5) add elements and attributes
 

 
Add at the end, use addelem; Add at the beginning, use insertelem.
 

 
Cmarkup XML;
 

 XML. load ("C :\\  userinfo . XML "); XML. addelem ("order"); XML. cancelem ();  // Enter order 
  
 XML. addelem ("item"); XML. cancelem ();  // enter item  XML. addelem ("Sn", " 4238764-a" ); // Add element XML. addelem ("name", " bearing" ); // Add element XML. addelem ("QTY", " 15" ); // Add element XML. outofelem ();  // exit item  

XML. addelem ("shipment"); XML. cancelem ();// Enter shipmentXML. addelem ("POC"); // Add the XML. setattrib ("type ","Non-emergency"); // Add the property XML. cancelem ();// Enter the POCXML. addelem ("name ","John Smith"); // Add element XML. addelem (" tel "," 555-1234 "); // Add element XML. Save (" C :\\Userinfo. Xml ");
 

The effect is as follows:

 <Order>    <Item>   <Sn>  132487a-j  </Sn>    <Name>  Crank Casing  </Name>    <Qty>  1  </Qty>    </Item>   <Item>    <Sn>  4238764-a  </Sn>    <Name>  Bearing  </Name>    <Qty>  15 </Qty>    </Item>    <Shipment>    <POC  Type  ="  Non-emergency  ">    <Name> John Smith  </Name>    <Tel>  555-1234  </Tel>    </Poc>    </Shipment>    </Order>   

(6) modifying elements and attributes

For example, change the attribute type in POC to: change;

Change element Tel to: 123456789

Cmarkup XML;
If (XML. Load ("userinfo. xml "))
{
Cstring struserid = _ T ("");
XML. resetmainpos ();
If (XML. findchildelem ("shipment "))
{
XML. cancelem ();
If (XML. findchildelem ("POC "))
{
XML. cancelem ();
Cstring str_type = xml. getattrib ("type ");
MessageBox (str_type );
XML. setattrib ("type", "change ");
Struserid = xml. getdata ();

If (XML. findchildelem ("tel "))
{
XML. cancelem ();
XML. setdata ("123456789 ");
XML. Save ("userinfo. xml ");
Return;
}
}
}
}

(7) delete elements:

Delete the project with Sn = 132487a-j.

Cmarkup XML;
If (XML. Load ("userinfo. xml "))
{
Cstring struserid = _ T ("");
XML. resetmainpos ();
If (XML. findchildelem ("item "))
{
XML. cancelem ();
Cstring str_sn;
XML. findchildelem ("Sn ");
Str_sn = xml. getchilddata ();
If (str_sn = "132487a-j ")
{
XML. removeelem ();
XML. Save ("userinfo. xml ");
}
}
}