'不重复编号上传用,这里的用法比较简单,没有做复杂的编号规则处理'
Public Class BizCodeBuilder
Private _codelock As New Object
Public Sub New()
End Sub
Public Function GetNextCode(s_name As String, Optional s_prefix As String = Nothing) As String
SyncLock _codelock '使用锁处理并发
Dim db = HySql.DataBaseFactory.CreateDatabase("编号用户测试库")
Dim Sql As String = CExp("select * from uSysBizCode where BizName='{0}'", s_name) '执行SQL
Dim dt As system.data.DataTable = db.ExecuteDataSet(Sql).Tables(0)
Dim dr As system.data.DataRow
If dt.Rows.count = 0 Then
dr = dt.NewRow()
dr("BizName") = s_name
dr("MaxValue") = 1
If String.IsNullOrEmpty(s_prefix) Then s_prefix = Date.now.ToString("mmss") & "BH"
dr("Prefix") = s_prefix
dr("Mark") = "yyyyMMdd"
dr("MarkValue") = Date.Today.ToString("yyyyMMdd")
dr("Length") = 4
dt.Rows.Add(dr)
Else
dr = dt.Rows(0)
'这里的处理规则是按时间进行重新编号,至于是按年,月还是日,在掩码中体现'
If dr("MarkValue") <> Date.Today.ToString(dr("Mark")) Then
dr("MaxValue") = 1
dr("MarkValue") = Date.Today.ToString(dr("Mark"))
Else
dr("MaxValue") = dr("MaxValue") + 1
End If
End If
db.UpdateDataTable(dt)
Return dr("Prefix") & dr("MarkValue") & Format(dr("MaxValue"), "0000") '顺序号只取4位'
End SyncLock
End Function
End Class
[此贴子已经被作者于2024/7/26 15:55:38编辑过]
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Post By：2024/7/26 9:36:00 [显示全部帖子]
