主题：集合转数组时出错

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Dim lst As new List(Of String)
For i As Integer = 1 To 20
    lst.Add(Cstr(i))
Next

Dim str As String = String.Join("','",lst.ToArray)
msgbox(str)
Dim lis2 As List(Of String) = DataTables("编号统计").GetValues("市内_入围编号","投标单位 in ('" & str & "')")