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
VBÎÞËù²»ÄÜÖ®Î壺½¨Á¢“±ê×¼”DLL¶¯Ì¬Á´½Ó¿âÎļþ£¨1£©
×÷ÕߣºÖÓÉù
²©¿ÍµØÖ·£ºhttp://blog.csdn.net/useway
¶¯Ì¬Á´½Ó¿â¾³£±»ÈÏΪÊÇVC»òÕßDephiµÄרÀû£¬DLLÎļþ¿ÉÒÔ½«Äã±àдµÄº¯Êý¶¯Ì¬µÄ·¢²¼£¬²¢¿ÉÒÔ±»ÆäËû³ÌÐòºÜ·½±ãµÄµ÷Óá£
&n ......
Format[$] ( expr [ , fmt ] )
format ·µ»Ø±äÌåÐÍ
format$ Ç¿ÖÆ·µ»ØÎªÎı¾
--------------------------------
Êý×ÖÀàÐ͵ĸñʽ»¯
--------------------------------
¹Ì¶¨¸ñʽ²ÎÊý£º
General Number ÆÕͨÊý×Ö£¬Èç¿ÉÒÔÓÃÀ´È¥µôǧλ·Ö¸ôºÅ
format$("100 ......
len£¨string£©£º¼ÆËã×Ö·û´®³¤¶Èº¯Êý¡£·µ»Ø×Ö·û´®stringÖÐ×Ö·ûµÄ¸öÊý¡£Ò»¸öºº×ÖΪһ¸ö×Ö·û£¬¿Õ¸ñҲΪһ¸ö×Ö·û£¬¿Õ×Ö·û´®µÄ³¤¶ÈΪ0.
Ltrim£¨string£©¡¢Rtrim£¨string£©¡¢Trim£¨string£©£º
Ltrim£¨string£©º¯Êý¹¦ÄÜÊÇ·µ»ØÉ¾³ýÁË×Ö·û´®string×ó±ß¿Õ¸ñÖ®ºóÊ£ÓàµÄ²¿·Ö¡£
Rtrim£¨string£©º¯Êý¹¦ÄÜÊÇ·µ»ØÉ¾³ýÁË×Ö·û´®ÖÐstringÓ ......
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£¬ÒÀ¾ÝXPathËùÖÆ¶¨µÄ¹æÔò£¬Ò²¿ÉÒԺܷ½±ãµØÕÒµ½XML½á¹¹ÎĵµÊ÷ÖеÄÈκÎÒ»¸ö½Úµã.
¡¡¡¡²»¹ý£¬ÓÉÓÚXPath¿ÉÓ¦Ó ......