参考:http://www.foxtable.com/webhelp/scr/2403.htm
加多一个查找判断即可,Datacolchanged事件
If e.DataCol.Name = "时间" Then
If e.DataRow.IsNull("时间") Then
e.DataRow("编号") = Nothing
Else
Dim bh As String = Format(e.DataRow("时间"),"yyyy-") '取得编号的8位前缀
If e.DataRow("编号").StartsWith(bh) = False '如果编号的前8位不符
Dim dr As DataRow = e.DataTable.Find("时间=#" & e.DataRow("时间") & "# and 编号 is not null and _Identify <> " & e.DataRow("_Identify") )
If dr IsNot Nothing Then
e.DataRow("编号") = dr("编号")
Else
Dim d As Date = e.DataRow("时间")
Dim d1 As Date = new Date(d.Year,1,1)
Dim d2 As Date = new Date(d.Year+1,1,1)
Dim max As String
Dim idx As Integer
max = e.DataTable.Compute("Max(编号)","时间 >= #" & d1 & "# and 时间 < #" & d2 & "# And [_Identify] <> " & e.DataRow("_Identify")) '取得该天的最大编号
If max > "" Then '如果存在最大编号
idx = CInt(max.Substring(5,3)) + 1 '获得最大编号的后三位顺序号,并加1
Else
idx = 1 '否则顺序号等于1
End If
e.DataRow("编号") = bh & Format(idx,"000")
End If
End If
End If
End If