Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

VB.NETÖвÙ×÷xmlÎļþ£¨²åÈë½Úµã¡¢Ð޸ġ¢É¾³ý£©

ÒÑÖªÓÐÒ»¸öXMLÎļþ£¨bookstore.xml£©ÈçÏ£º
<?xml version="1.0" encoding="gb2312"?>
<bookstore>
<book genre="fantasy" ISBN="2-3631-4">
<title>Oberon's Legacy</title>
<author>Corets, Eva</author>
<price>5.95</price>
</book>
</bookstore>
1¡¢Íù<bookstore>½ÚµãÖвåÈëÒ»¸ö<book>½Úµã£º
Dim xmlDoc As New XmlDocument()
xmlDoc.Load("bookstore.xml")
Dim root As XmlNode = xmlDoc.SelectSingleNode("bookstore") '²éÕÒ<bookstore>
Dim xe1 As XmlElement = xmlDoc.CreateElement("book") '´´½¨Ò»¸ö<book>½Úµã
xe1.SetAttribute("genre", "ÀîÔÞºì") 'ÉèÖøýڵãgenreÊôÐÔ
xe1.SetAttribute("ISBN", "2-3631-4") 'ÉèÖøýڵãISBNÊôÐÔ
Dim xesub1 As XmlElement = xmlDoc.CreateElement("title")
xesub1.InnerText = "CS´ÓÈëÃŵ½¾«Í¨" 'ÉèÖÃÎı¾½Úµã
xe1.AppendChild(xesub1) 'Ìí¼Óµ½<book>½ÚµãÖÐ
Dim xesub2 As XmlElement = xmlDoc.CreateElement("author")
xesub2.InnerText = "ºò½Ý"
xe1.AppendChild(xesub2)
Dim xesub3 As XmlElement = xmlDoc.CreateElement("price")
xesub3.InnerText = "58.3"
xe1.AppendChild(xesub3)
root.AppendChild(xe1) 'Ìí¼Óµ½<bookstore>½ÚµãÖÐ
xmlDoc.Save("bookstore.xml")
//===============================================
½á¹ûΪ£º
<?xml version="1.0" encoding="gb2312"?>
<bookstore>
<book genre="fantasy" ISBN="2-3631-4">
<title>Oberon's Legacy</title>
<author>Corets, Eva</author>
<price>5.95</price>
</book>
<book genre="ÀîÔÞºì" ISBN="2-3631-4">
<title>CS´ÓÈëÃŵ½¾«Í¨</title>
<author>ºò½Ý</author>
<price>58.3</price>
</book>
</bookstore>
2¡¢Ð޸Ľڵ㣺½«genreÊôÐÔֵΪ“ÀîÔ޺쓵ĽڵãµÄgenreÖµ¸ÄΪ“updateÀîÔ޺씣¬½«¸Ã½ÚµãµÄ×Ó½Úµã<author>µÄÎı¾ÐÞ¸ÄΪ“ÑÇʤ”¡£
Dim nodeList As XmlNodeList = xmlDoc.SelectSingleNode("bookstore").ChildNodes '»ñÈ¡bookstore½ÚµãµÄËùÓÐ×Ó½Úµã
Dim xn As XmlNode
For Each


Ïà¹ØÎĵµ£º

VB ²ÜʦÐÖÃæÊÔ ¼ÍÂÉÓëѧϰ

¹ØÓÚ²ÜʦÐÖÕÒ¹¤×÷£º
ÔÚÕÒ¹¤×÷¹ý³ÌÖУº
1¡¢ ¹Û²ìÁ¦¡£ÃæÊÔʱ¿´¼ûÖÐÄÏÈÚͨµÄºá·ù“×îС»¯ÄãºÍ¿Í»§µÄ¾àÀ룬×î´ó»¯ÄãºÍ¿Í»§µÄÀûÒ攣¬Ë³¶øºÍÃæÊÔ¹ÙÌÖÂÛËûÃǹ«Ë¾µÄÎÄ»¯ºÍÀíÄ»á¶ÔÄãӦƸÓкܴó°ïÖú¡£ÕÒ¹¤×÷ʱµÄ±ÊÊÔ»ù´¡¶¼²î²»¶à£¬ÖØÒªµÄÊǺÍÀÏ×ܵÄÃæÊÔ£¬¹«Ë¾¸ü×¢ÖصÄÊÇÄãÊÇÈçºÎ×öÈ˵ĺÍÄã¶ÔÒµÎñµÄÀí½â¡£ËùÒÔ£¬ÔÚÒÔºó ......

VBʵÀý —ÍòÄêÀú £¨1£©

1¡¢´´½¨¿Ø¼þ£ºlbl1¡¢txt1¡¢lbl2¡¢cmd1
2¡¢lbl1.caption=ÊäÈëÈÕÆÚ£¨ÈÎÒ»ÖÖÕýÈ·¸ñʽ£©£º
ÉèÖÃlbl1¡¢txt1¡¢lbl2¡¢cmd1µÄ×ÖÌå´óС¼°ÑÕÉ«£»
3¡¢Ë«»÷°´Å¥“È·ÈÏ”£¬Ìí¼Ó´úÂ룬Ч¹ûΪ£º
    Option Explicit
        Private Sub cmd1_Click()
  &nb ......

vb³£ÓõÄÄÚ²¿º¯Êý£¨Ò»£©£ºÊýѧº¯Êý


Êýѧº¯Êý£ºÖ÷ÒªÓÃÀ´Íê³ÉÊýÖµ¼ÆËã¡£
£¨1£©abs£¨X£©£º¾ø¶ÔÖµº¯Êý£¬¼ÆËãXµÄ¾ø¶ÔÖµ£¬XΪһ¸öÊýÖµ±í´ïʽ¡£
£¨2£©sgn£¨X£©£º·ûºÅº¯Êý¡£¸Ãº¯ÊýµÄ¹¦ÄÜÊÇÅжÏXµÄ·ûºÅ¡£µ±X>0ʱ£¬º¯ÊýֵΪ1£»X<0ʱ£¬º¯ÊýֵΪ-1£»X=0ʱ£¬º¯ÊýֵΪ0.
£¨3£©exp£¨x£©£ºÃÝÔËË㺯Êý¡£·µ»ØeµÄX´ÎÃݵÄÖµ£¬·µ»ØֵΪ˫¾«¶ÈÐÍÊýÖµ¡£
£¨4£©log£¨x£©£º× ......

XML·Ö½âʵÀý

Ô­Ìù: http://topic.csdn.net/u/20100414/11/c69748ac-e0b2-490f-bde9-7c5284c3660c.html?seed=1832202493
 
declare @xml xml=
'<upd:Update xmlns:lar="http://schemas.microsoft.com/msus/2002/12/LogicalApplicabilityRules" xmlns:cmd="http://schemas.microsoft.com/msus/2002/12/UpdateHandlers/Command ......

XPath,XMLÎĵµ,SelectNodes()ͨÅä·û˵Ã÷


ÀûÓÃXPath¶ÁÈ¡XmlÎļþ
Ö®ËùÒÔÒªÒýÈëXPathµÄ¸ÅÄĿµÄ¾ÍÊÇΪÁËÔÚÆ¥ÅäXMLÎĵµ½á¹¹Ê÷ʱÄܹ»×¼È·µØÕÒµ½Ä³Ò»¸ö½ÚµãÔªËØ¡£¿ÉÒÔ°ÑXPath±È×÷Îļþ¹ÜÀí·¾¶£ºÍ¨¹ýÎļþ¹ÜÀí·¾¶£¬¿ÉÒÔ°´ÕÕÒ»¶¨µÄ¹æÔò²éÕÒµ½ËùÐèÒªµÄÎļþ£»Í¬Ñù£¬ÒÀ¾ÝXPathËùÖƶ¨µÄ¹æÔò£¬Ò²¿ÉÒԺܷ½±ãµØÕÒµ½XML½á¹¹ÎĵµÊ÷ÖеÄÈκÎÒ»¸ö½Úµã.
¡¡¡¡²»¹ý£¬ÓÉÓÚXPath¿ÉÓ¦Ó ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ