vb.net 在 IF 比较中忽略大小写
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Ignore case in IF comparision
提问by ElektroStudios
Is there an easy way to do this comparision with ignorecase ON?
有没有一种简单的方法可以与 ignorecase ON 进行比较？
If file.Extension = ".Lnk" Then MsgBox(file.Extension)
What i'm trying to do is to get all the ".lnk" or ".LNK" or ".lNk" or " ".Lnk" etc...
我想要做的是获取所有“.lnk”或“.LNK”或“.lNk”或“.Lnk”等...
I know this is possibly with RegEx but... there's an easy way for that example?
我知道这可能与 RegEx 一起使用，但是......那个例子有一个简单的方法吗？
Thankyou for read
谢谢阅读
回答by Steve
Convert the extension to lowercase using ToLower and then compare
使用 ToLower 将扩展名转换为小写，然后比较
If file.Extension.ToLower = ".lnk" Then MsgBox(file.Extension)
And forget Regex for this. It's really overkill and inappropriate
并为此忘记正则表达式。真的是矫枉过正，不合适
回答by D_Bester
Use String.Equalsfor string comparisons. To ignore case use CurrentCultureIgnoreCaseor InvariantCultureIgnoreCase.
使用String.Equals字符串比较。要忽略大小写，请使用CurrentCultureIgnoreCase或InvariantCultureIgnoreCase。
If String.Equals("AAA", "aaa", StringComparison.InvariantCultureIgnoreCase) Then
'more code
End If
MSDN: String.Equals Method (String)
回答by Hyman Gajanan
use this for ignore case compare
将此用于忽略大小写比较
If String.Compare(file.Extension, ".lnk", True) = 0 Then MsgBox(file.Extension)
change true to false for case sensitive compare
对于区分大小写的比较，将 true 更改为 false
回答by Jacob Hernandez
Module Test
模块测试
Sub Main()
Dim userString As String = Nothing
Dim finalString As String = "Jacob"
Console.WriteLine("Enter username")
userString = Console.ReadLine()
If String.Compare(finalString, userString, True) = 0 Then
Console.WriteLine("Access Granted")
Else
Console.WriteLine("Access Denied")
End If
Console.ReadLine()
End Sub
End Module
终端模块
