If e.DataCol.Name = "modate" Then
If e.DataRow.IsNull("modate") Then
e.DataRow("mono") = Nothing
Else
Dim u As String = e.DataRow("useri")
Dim d As Date = e.DataRow("modate")
Dim y As Integer = d.Year
Dim m As Integer = d.Month
Dim Days As Integer = Date.DaysInMonth(y,m)
Dim fd As Date = New Date(y,m,1) '获得该月的第一天
Dim ld As Date = New Date(y,m,Days) '获得该月的最后一天
Dim bh As String = Format(d,"yyyyMM") '生成编号的前6位,4位年,2位月.
If e.DataRow("mono").StartsWith(bh) = False '如果编号的前6位不符
Dim max As String
Dim idx As Integer
max = e.DataTable.Compute("Max(mono)","modate >= #" & fd & "# And modate <= #" & ld & "# And [num] <> " & e.DataRow("num")) '取得该月的最大编号
If max > "" Then '如果存在最大编号
idx = CInt(max.Substring(7,4)) + 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("mono") = bh & "-" & Format(idx,"0000") & "-" & u
End If
End If
End If
表默认不加载任何数据，设置自动编号之后，经常会出现编号重复。求解？？？
加好友 
发短信
Post By：2020/6/24 9:14:00 [只看该作者]
此主题相关图片如下：69d3165e-6f1e-4e26-b965-833afd8f33c7.png