主题：删除重复值 代码求教

Dim idx As String = "-1,"
Dim idx_temp As String = ""
Dim pdr As DataRow = Nothing
Dim count As Integer = 0
Dim cs As String = "第一列"
For Each dr As DataRow In DataTables("表A").Select("", cs)
    
    Dim flag As Boolean = False
    If pdr IsNot Nothing Then
        For Each c As String In cs.split(",")
            If pdr(c) <> dr(c) Then
                flag = True
                Exit For
            End If
        Next
        
        If flag Then
            If count > 1 Then
                idx &= idx_temp
            End If
            count = 1
            idx_temp = ""
        Else
            count += 1
            idx_temp &= dr("_Identify") & ","
        End If
    End If
    
    pdr = dr
Next

If count > 1 Then
    idx &= idx_temp
End If

'Tables("表A").filter = "_Identify not in (" & idx.trim(",") & ")"

DataTables("表A").DeleteFor("_Identify In (" & idx.trim(",") & ")")