实现这一目标的专业方法是什么？ 谢谢. 我已经无耻地从 this question中删除了示例并将其从C#转换为VB.net. Public Function GetNthIndex(s As String, t As Char, n As Integer) As Integer Dim count As Integer = 0
谢谢.
我已经无耻地从 this question中删除了示例并将其从C#转换为VB.net.Public Function GetNthIndex(s As String, t As Char, n As Integer) As Integer
Dim count As Integer = 0
For i As Integer = 0 To s.Length - 1
If s(i) = t Then
count += 1
If count = n Then
Return i
End If
End If
Next
Return -1
End Function