主题：状态更新

方法一：

DataTables("ISO_Index").loadfilter = ""
DataTables("ISO_Index").loadTop = "100 percent"
DataTables("ISO_Index").load
msgbox(2)
For Each u As String In DataTables("ISO_Index").GetValues("Document_No")
    If DataTables("ISO_Index").Compute("Count([_Identify])","Document_No = '" & u & "'") > 1 Then
        Dim md As Date = DataTables("ISO_Index").Compute("Max(RecieveDate)","Document_No = '" & u & "'")
        Dim dss As List(Of DataRow)
        dss = DataTables("ISO_Index").Select("[Document_No] = '" & u & "'")
        For i As Integer = 0 To dss.Count-1
            If dss(i)("RecieveDate") < md Then
                dss(i)("REV_Status") = "Updated"
            Else
                dss(i)("REV_Status")  = "New"
            End If
        Next
    End If
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