主题：如何去除字符串中的重复值

参考

Dim str As String = "1,2,4,5,2,4,6,7,5"
Dim ls As new List(Of String)
For Each s As String In str.split(",")
    If ls.Contains(s) = False Then ls.add(s)
Next
str = String.Join(",", ls.ToArray)
msgbox(str)