摘要: VB.NET Program Structure C# Imports System Namespace Hello Class HelloWorld Overloads Shared Sub Main(ByVal args() As String) Dim name As String = "VB.NET" 'See if an argument was passedfrom the comma...
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posted @ 2007-08-24 14:23 wpater 阅读(956) 评论(0)
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摘要: "^\d+$" //非负整数(正整数 + 0) "^[0-9]*[1-9][0-9]*$" //正整数 "^((-\d+)|(0+))$" //非正整数(负整数 + 0) "^-[0-9]*[1-9][0-9]*$" //负整数 "^-?\d+$" //整数 "^\d+(\.\d+)?$" //非负浮点数(正浮点数 + 0) "^(([0-9]+\.[0-9]*[1-9][0-9]...
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posted @ 2007-08-24 14:08 wpater 阅读(17) 评论(0)
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摘要: --【字符串函数】--字符串截取substr(字段名,起始点,个数)select Name,substr(Name,2,4),substr(Name,0,3),substr(Name,-2,3),substr(Name,-2,1) from t1;--字符串从前面取三个(0开始)select Name,substr(Name,0,3) from t1;--字符串从后面取三个select Name,...
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posted @ 2007-08-24 14:07 wpater 阅读(83) 评论(0)
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