Select e.DataCol.Name
Case "工伤认定时间","工伤认定文号种类","年度"
Dim d As Date = e.DataRow("工伤认定时间")
If e.DataRow.IsNull("工伤认定时间") Then
e.DataRow("工伤认定文号") = Nothing 'e.DataRow("工伤认定文号种类") & "〔" & e.DataRow("年度") & "〕" & " " & "号"
ElseIf e.DataRow("工伤认定时间") <> Nothing Then
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,1,1) '获得该年的第一天
Dim ld As Date = New Date(y,12,31) '获得该年的最后一天
Dim bh As String = e.DataRow("工伤认定文号种类") & "〔" & Format(d,"yyyy") & "〕" '生成编号的前缀
If e.DataRow("工伤认定文号").StartsWith(bh) = False '如果单据编号前缀不符
Dim max As String
Dim idx As Integer
Dim flt As String
flt = "工伤认定文号种类 = '"& e.DataRow("工伤认定文号种类") & "' And 工伤认定时间 >= #" & fd & "# And 工伤认定时间 <= #" & ld & "#"
max = e.DataTable.Compute("Max(工伤认定文号)",flt) '取得该年的相同工程代码的最大单据编号
If max > "" Then '如果存在最大单据编号
idx = max.LastIndexOf("〕") + 1
idx = CInt(max.Substring(idx,3))+1 '获得最大单据编号的后四位顺序号,并加1
Else
idx = 1 '否则顺序号等于1
End If
e.DataRow("工伤认定文号") = bh & Format(idx,"000") & "号"
End If
End If
End Select