主题：[求助]下拉列表框显示不重复的列内容

DropDownOpened

Dim idx As String = "-1,"
Dim idx_temp As String = ""
Dim pdr As DataRow = Nothing
Dim count As Integer = 0
Dim cs As String = "合同编号,供应商"
For Each dr As DataRow In DataTables("订货明细表").Select("未到货数量>0", cs)
    Dim flag As Boolean = False
    If pdr IsNot Nothing Then
        For Each c As String In cs.split(",")
            If pdr(c).replace(" ","") <> dr(c).replace(" ", "") 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
    Else
        count += 1
    End If
    pdr = dr
Next
If count > 1 Then
    idx &= idx_temp
End If

e.Form.controls("Table1").Table.Filter = "未到货数量>0 and _Identify not In (" & idx.trim(",") & ")"