例子 BF 15 01 22 W D - 0001
字符 年 月 日 拜访人员代码 拜访类型 序号(按年增加)
Select e.DataCol.Name
Case "拜访_类型","拜访_人员"
If e.DataRow.IsNull("拜访_类型") OrElse e.DataRow.IsNull("拜访_人员") Then
e.DataRow("编号") = Nothing
Else
Dim bfry As String = e.DataRow("拜访_人员")
If e.DataRow("拜访_人员") = "光" Then
bfry = "W"
ElseIf e.DataRow("拜访_人员") = "斌" Then
bfry = "B"
ElseIf e.DataRow("拜访_人员") = "桂" Then
bfry = "G"
ElseIf e.DataRow("拜访_人员") = "学" Then
bfry = "X"
ElseIf e.DataRow("拜访_人员") = "凯" Then
bfry = "Z"
ElseIf e.DataRow("拜访_人员") = "斌" Then
bfry = "L"
ElseIf e.DataRow("拜访_人员") = "龙" Then
bfry = "I"
ElseIf e.DataRow("拜访_人员") = "杰" Then
bfry = "J"
Else
bfry = "P"
End If
Dim bflx As String = e.DataRow("拜访_类型")
If e.DataRow("拜访_类型") = "电话" Then
bflx = "D"
Else
bflx = "Z"
End If
Dim d As Date = e.DataRow("拜访_日期")
Dim y As Integer = d.Year
Dim m As Integer = d.Month
Dim a As Integer = d.day
Dim bf As String = "BF"
Dim bh As String = bf & Format(d,"yy") '生成编号的前4位,2位年
If e.DataRow("编号").StartsWith(bh) = False '如果单据编号前缀不符
Dim max As String
Dim idx As Integer
max = e.DataTable.Compute("Max(编号)","拜访_日期 >= #" & y & "# And [序号] <> " & e.DataRow("序号")) '取得该年的最大编号
If max > "" Then '如果存在最大编号
idx = CInt(max.Substring(11,4)) + 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
Dim bh1 As String = bf & Format(d,"yyMMdd") '生成编号的前8位,2位年
e.DataRow("编号") = bh1 & bflx & bfry & "-" & Format(idx,"0000")
End If
End If
End Select