vb.net 在字符串中找到空格，删除它后面的所有内容
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Find space in string, remove everything after it
提问by John
Hoping this would be simple, but doesnt seem to be.
希望这会很简单，但似乎并非如此。
I've got a variable in vb.net 'contactname'. format is like "John Smith"
我在 vb.net 'contactname' 中有一个变量。格式就像“约翰史密斯”
I want to get just the forename from this, but cant seem to do it.
我只想从这个名字中得到名字，但似乎无法做到。
I've found and adapted some examples from google, but nothing seems to work :(
我从谷歌找到并改编了一些例子，但似乎没有任何效果:(
回答by Damien_The_Unbeliever
回答by Alex
Could use Regex if you like:
如果您愿意，可以使用正则表达式：
Public Shared Function RegexGetForename(ByVal str As String) As String
Dim a = New System.Text.RegularExpressions.Regex("^(\w+)")
If a.IsMatch(str) Then
Return a.Match(str).Value
Else
Return vbNull
End If
End Function
回答by chiapa
Dim forename as string
Dim i = contactname.IndexOf(" ")
If i <> -1 Then
forename = contactname.Substring(0, i)
MsgBox(forename)
End If
try it
尝试一下
