请问有没一个简单的方法从一个字符串数组中获取不重复的值?
例如我有如下代码:
For Each dr1 As DataRow In drs1 Dim s1 As String = dr1("item_no") Dim ss1() As String ss1 = s1.split("-") s1=ss1(0) ids = ids & ",'" & s1 & "'" ids = Ids.TrimStart(",") Next
现在的ids 中包括的编中有很多是重复的,请问如何将重复的编码去掉?