vb点虐 大小写字母转换
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
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Dim s As String = "0Ff0ajkh04624F"
Dim i As Integer = 0
Dim sTemp As String = ""
Dim ss As String = ""
For i = 1 To Strings.Len(s)
sTemp = Mid(s, i, 1)
If Asc(sTemp) = 65 And Asc(sTemp) = 90 Then
sTemp = LCase(sTemp)
ElseIf Asc(sTemp) = 95 And Asc(sTemp) = 122 Then
sTemp = UCase(sTemp)
Else
sTemp = sTemp
End If
ss = ss sTemp
Next
MsgBox(ss)
End Sub
VB.NET代码不区分字母的大小写是什么意思啊?
就是你在写代码是用大写字母和小写字母vb点虐 认为都一样,没区别。你定义变量时Abc
使用时 用abc 它自动会把 abc改成Abc。
VB点虐 2008 为何正则表达式的忽略大小写的功能失效?
Dim Regex As System.Text.RegularExpressions.Regex '这个是常量对象,参数要在构造函数中设定,以后就不能更改,就是下面这句
Regex = New System.Text.RegularExpressions.Regex("you", System.Text.RegularExpressions.RegexOptions.Singleline Or System.Text.RegularExpressions.RegexOptions.IgnoreCase) '创建正则表达式实例,匹配模式是you
Dim Matchs As System.Text.RegularExpressions.MatchCollection
Dim Match As System.Text.RegularExpressions.Match
'Dim Ops As RegexOptions = RegexOptions.IgnoreCase + RegexOptions.Singleline ,什么情况,这与Regex对象不搭边,当然起不了作用了
Dim IsMatch As Boolean = Regex.IsMatch(" 1 You you yOU yoU")
Matchs = Regex.Matches((" 1 You you yOU yoU"))
Dim a As Integer = Matchs.Count
MsgBox(a)
Dim sItems As String = ""
For Each Match In Matchs
sItems += Match.Value vbCrLf
Next
MsgBox(sItems)
Dim s = Regex.Replace(" 1 You you yOU yoU", "me", 1) '后一个参数是替换次数
MsgBox(s)
新闻名称:vb点虐 忽略大小写 vba 忽略警告
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