专家坐堂-[分享]日期段筛选Foxtable(狐表) - 新一代数据库软件，完美融合Access、Foxpro、Excel、vb.net之优势，人人都能掌握的快速软件开发工具!

以文本方式查看主题

-  Foxtable(狐表)  (http://foxtable.com/bbs/index.asp)
--  专家坐堂  (http://foxtable.com/bbs/list.asp?boardid=2)
----  [分享]日期段筛选  (http://foxtable.com/bbs/dispbbs.asp?boardid=2&id=56939)

--  作者：lyfxybc
--  发布时间：2014/9/15 17:55:00
--  [分享]日期段筛选

[分享]日期段筛选（代码并非完美，请老师指正）

    红色部分为帮助文件介绍

按时段加载数据

我们经常需要加载某个时段的数据，下面列出了各种情况的加载代码给大家参考。

加载指定年份数据

例如加载2011年的订单：

Dim y As Integer = 2011 \'指定年份
Dim dt1 As New Date(y, 1, 1)
Dim dt2 As New Date(y, 12, 31)
Dim Filter As String
Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"
DataTables("订单").LoadFilter = Filter
DataTables("订单").Load()

加载指定月份数据

例如加载2011年6月份的订单：

Dim y As Integer = 2011 \'指定年份
Dim m As Integer = 6 \'指定月份
Dim dt1 As New Date(y, m, 1)
Dim dt2 As New Date(y, m, Date.DaysInMonth(2011,6)) \'获取该月的最后一天
Dim Filter As String
Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"
DataTables("订单").LoadFilter = Filter
DataTables("订单").Load()

加载指定季度的数据

例如加载2011年2季度的订单：

Dim y As Integer = 2011 \'指定年份
Dim q As Integer = 2 \'指定季度
Dim dt1 As New Date(y, 3 * (q - 1) + 1, 1) \'获取该季度的第一天
Dim dt2 As New Date(y, 3 * q, Date.DaysInMonth(2011,3 * q)) \'获取该季度的最后一天
Dim Filter As String
Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"
DataTables("订单").LoadFilter = Filter
DataTables("订单").Load()

加载本年数据

例如加载本年的订单：

Dim y As Integer = Date.Today.Year
Dim dt1 As New Date(y, 1, 1)
Dim dt2 As New Date(y, 12, 31)
Dim Filter As String
Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"
DataTables("订单").LoadFilter = Filter
DataTables("订单").Load()

加载本季度数据

例如加载本季度的订单：

Dim y As Integer = Date.Today.Year
Dim q As Integer = (Date.Today.Month - 1) \\ 3 + 1 \'计算现在是第几个季度
Dim dt1 As New Date(y, 3 * (q - 1) + 1, 1) \'获取本季度的第一天
Dim dt2 As New Date(y, 3 * q, Date.DaysInMonth(2011,3 * q)) \'获取本季度的最后一天
Dim Filter As String
Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"
DataTables("订单").LoadFilter = Filter
DataTables("订单").Load()

注意第二行代码，用的是整除运算符（\\），而不是通常的除法运算符（/），整除运算符会直接对结果取整。

加载本月数据

例如加载本月的订单：

Dim y As Integer = Date.Today.Year
Dim m As Integer = Date.Today.Month
Dim dt1 As New Date(y, m, 1)
Dim dt2 As New Date(y, m, Date.DaysInMonth(y, m)) \'获取本月的最后一天
Dim Filter As String
Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"
DataTables("订单").LoadFilter = Filter
DataTables("订单").Load()

加载本周数据

例如加载本周的订单：

Dim y As Integer = Date.Today.Year
Dim w As Integer = Date.Today.DayOfWeek \'算出今天是星期几
Dim dt1 As Date = Date.Today.AddDays(-w) \'获取本周的第一天
Dim dt2 As Date = Date.Today.AddDays(6 - w) \'获取本周的最后一天
Dim Filter As String
Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"
DataTables("订单").LoadFilter = Filter
DataTables("订单").Load()

注意事项

1、前面的代码全部是以内部表或Access数据源作为数据源的，如果你使用SQL Server作为数据源，那么日期不是用符号#括起来，而是用单引号括起来，所以下面这样代码：

Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

应该改为：

Filter = "日期 >= \'" & dt1 & "\' And 日期 <= \'" & dt2 & "\'"

2、这一节虽然以加载数据为例，但有关知识同样可以用于筛选，只需将最好两行代码：

DataTables("订单").LoadFilter = Filter
DataTables("订单").Load()

改为：

Tables("订单").Filter = Filter

即可用于筛选数据。

例如筛选本周订单：

Dim y As Integer = Date.Today.Year
Dim w As Integer = Date.Today.DayOfWeek \'算出今天是星期几
Dim dt1 As Date = Date.Today.AddDays(-w) \'获取本周的第一天
Dim dt2 As Date = Date.Today.AddDays(6 - w) \'获取本周的最后一天
Dim Filter As String
Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"
Tables("订单").Filter = Filter

l 当前表日期段筛选

本日

Dim y As Integer = Date.Today.Year

Dim m As Integer = Date.Today.Month

Dim d As Integer = Date.Today.day

Dim dt1 As New Date(y, m, d) \'获取本月的最后一天

Dim dt2 As New Date(y, m, d) \'获取本月的最后一天

Dim Filter As String

Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

CurrentTable.Filter = Filter

昨日

Dim y As Integer = Date.Today.Year

Dim m As Integer = Date.Today.Month

Dim d As Integer = Date.Today.day

\'For Each dr As DataRow In DataTables("月份起始设置").DataRows

        If d>=2

           Dim dt1 As New Date(y, m, d-1)

           Dim dt2 As New Date(y, m, d-1)

           Dim Filter As String

           Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

           CurrentTable.Filter = Filter

        ElseIf d=1 And m>=2 Then

           Dim dt1 As New Date(y, m-1, Date.DaysInMonth(y, m-1))

           Dim dt2 As New Date(y, m-1, Date.DaysInMonth(y, m-1))

           Dim Filter As String

           Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

           CurrentTable.Filter = Filter

        ElseIf d=1 And m=1 Then

           Dim dt1 As New Date(y-1, m+11, Date.DaysInMonth(y-1, m+11))

           Dim dt2 As New Date(y-1, m+11, Date.DaysInMonth(y-1, m+11))

           Dim Filter As String

           Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

           CurrentTable.Filter = Filter

        End If

\'Next

本月

Dim y As Integer = Date.Today.Year

Dim m As Integer = Date.Today.Month

Dim d As Integer = Date.Today.day

Dim dt1 As New Date(y, m, 1)

Dim dt2 As New Date(y, m, Date.DaysInMonth(y, m)) \'获取本月的最后一天

Dim Filter As String

    Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

CurrentTable.Filter = Filter

上月

Dim y As Integer = Date.Today.Year

Dim m As Integer = Date.Today.Month

Dim d As Integer = Date.Today.day

If m>=2

   Dim dt1 As New Date(y, m-1, 1)

   Dim dt2 As New Date(y, m-1, Date.DaysInMonth(y, m-1)) \'获取本月的最后一天

   Dim Filter As String

    Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

   CurrentTable.Filter = Filter

ElseIf m=1 Then

    Dim dt1 As New Date(y-1, m+11, 1)

    Dim dt2 As New Date(y-1, m+11, Date.DaysInMonth(y-1, m+11)) \'获取本月的最后一天

    Dim Filter As String

    Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

    CurrentTable.Filter = Filter

End If

本周

Dim y As Integer = Date.Today.Year

    Dim w As Integer = Date.Today.DayOfWeek

    Dim dt1 As Date = Date.Today.AddDays(-w)

    Dim dt2 As Date = Date.Today.AddDays(6 - w)

   Dim Filter As String

    Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

   CurrentTable.Filter = Filter

上周

Dim y As Integer = Date.Today.Year

Dim w As Integer = Date.Today.DayOfWeek \'算出今天是星期几

Dim dt1 As Date = Date.Today.AddDays(-w-7) \'获取本周的第一天

Dim dt2 As Date = Date.Today.AddDays(6 - w-7) \'获取本周的最后一天

Dim Filter As String

   Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

CurrentTable.Filter = Filter

本季

Dim y As Integer = Date.Today.Year

Dim q As Integer = (Date.Today.Month - 1) \\ 3 + 1

Dim t As Table = CurrentTable

    Dim dt1 As New Date(y, 3 * (q - 1) + 1, 1)

    Dim dt2 As New Date(y, 3 * q, Date.DaysInMonth(y,3 * q))

   Dim Filter As String

    Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

   CurrentTable.Filter = Filter

上季

Dim y As Integer = Date.Today.Year

Dim q As Integer = (Date.Today.Month - 1) \\ 3 + 1 \'计算现在是第几个季度

    If q>=2

       Dim dt1 As New Date(y, 3 * ((q-1) - 1) + 1, 1) \'获取本季度的第一天

     Dim dt2 As New Date(y, 3 * (q-1), Date.DaysInMonth(y,3 * (q-1))) \'获取本季度的最后一天

   Dim Filter As String

    Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

   CurrentTable.Filter = Filter

    ElseIf q=1

       Dim dt1 As New Date(y-1, 3 * (q+3 - 1) + 1, 1) \'获取本季度的第一天

       Dim dt2 As New Date(y-1, 3 * (q+3), Date.DaysInMonth(y-1,3 * (q+3))) \'获取本季度的最后一天

   Dim Filter As String

    Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

   CurrentTable.Filter = Filter

End If

今年

Dim y As Integer = Date.Today.Year

Dim dt1 As New Date(y, 1, 1)

Dim dt2 As New Date(y, 12, 31)

Dim Filter As String

Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

CurrentTable.Filter = Filter

去年

Dim y As Integer = Date.Today.Year

Dim dt1 As New Date(y-1, 1, 1)

Dim dt2 As New Date(y-1, 12, 31)

Dim Filter As String

Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

CurrentTable.Filter = Filter

自定义时间

此主题相关图片如下：image001.jpg

按设定日期计算年月季日

For Each dr As DataRow In DataTables("月份起始日设置").DataRows

    Dim qs As Integer = dr("每月第一天")

    Dim js As Integer = dr("每月最后一天")

If e.DataCol.Name = "日期" Then

    If e.DataRow.IsNull("日期") Then

        e.DataRow("年") = Nothing

       e.DataRow("月") = Nothing

        e.DataRow("季") = Nothing

        e.DataRow("日") = Nothing

    Else

        Dim d As Date = e.NewValue

        If d.Month = 12 And d.day >= qs Then

            e.DataRow("年") = d.Year +1

        Else

           e.DataRow("年") = d.Year

        End If

        If d.Day < qs Then

            e.DataRow("月") = d.Month

        Else If d.Month = 11 Then

            e.DataRow("月") = 12

        Else

            e.DataRow("月") = (d.Month + 1) Mod 12

        End If

        If d.day > js Then

            e.DataRow("季") = DatePart("q",d.AddDays(10))

        Else

            e.DataRow("季") = DatePart("q",d)

        End If

        e.DataRow("日") = d.Day

End If

End If

Next

本月

Dim y As Integer = Date.Today.Year

Dim m As Integer = Date.Today.Month

Dim d As Integer = Date.Today.day

For Each dr As DataRow In DataTables("月份起始日设置").DataRows

     Dim qs As Integer = dr("每月第一天")

     Dim js As Integer = dr("每月最后一天")

          If m>=1 And d>=qs

             Dim dt1 As New Date(y, m, qs)

             Dim dt2 As New Date(y, m+1, js) \'获取本月的最后一天

             Dim Filter As String

             Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

             CurrentTable.Filter = Filter

          ElseIf m=1 And d<qs

              Dim dt1 As New Date(y-1, m+11, qs)

              Dim dt2 As New Date(y, m, js) \'获取本月的最后一天

              Dim Filter As String

              Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

              CurrentTable.Filter = Filter

           End If

Next

上月

Dim y As Integer = Date.Today.Year

Dim m As Integer = Date.Today.Month

Dim d As Integer = Date.Today.day

For Each dr As DataRow In DataTables("月份起始日设置").DataRows

     Dim qs As Integer = dr("每月第一天")

     Dim js As Integer = dr("每月最后一天")

          If m>2 And d>=qs

             Dim dt1 As New Date(y, m-2, qs)

             Dim dt2 As New Date(y, m-1, js) \'获取本月的最后一天

             Dim Filter As String

             Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

             CurrentTable.Filter = Filter

          ElseIf m=2 And d>=qs

              Dim dt1 As New Date(y-1, m+11, qs)

              Dim dt2 As New Date(y, m-1, js) \'获取本月的最后一天

              Dim Filter As String

              Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

              CurrentTable.Filter = Filter

          ElseIf m=1 And d<qs

              Dim dt1 As New Date(y-1, m+10, qs)

              Dim dt2 As New Date(y-1, m+11, js) \'获取本月的最后一天

              Dim Filter As String

              Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

              CurrentTable.Filter = Filter

          End If

Next

今年

Dim y As Integer = Date.Today.Year

Dim m As Integer = Date.Today.Month

Dim d As Integer = Date.Today.day

For Each dr As DataRow In DataTables("月份起始日设置").DataRows

     Dim qs As Integer = dr("每月第一天")

     Dim js As Integer = dr("每月最后一天")

           If m>=1 And m<11

             Dim dt1 As New Date(y-1, 12, qs)

             Dim dt2 As New Date(y, m, js) \'获取本月的最后一天

             Dim Filter As String

             Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

             CurrentTable.Filter = Filter

           ElseIf m=11

              Dim dt1 As New Date(y-1, 12, qs)

              Dim dt2 As New Date(y, m, js) \'获取本月的最后一天

             Dim Filter As String

            Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

             CurrentTable.Filter = Filter



           ElseIf m=12 And d<qs

              Dim dt1 As New Date(y-1, 12, qs)

              Dim dt2 As New Date(y, m, js) \'获取本月的最后一天

             Dim Filter As String

             Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

             CurrentTable.Filter = Filter



          ElseIf m=12 And d>=qs

              Dim dt1 As New Date(y, 12, qs)

              Dim dt2 As New Date(y+1, m, js) \'获取本月的最后一天

             Dim Filter As String

             Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

             CurrentTable.Filter = Filter

          End If

Next

今年

Dim y As Integer = Date.Today.Year

Dim m As Integer = Date.Today.Month

Dim d As Integer = Date.Today.day

For Each dr As DataRow In DataTables("月份起始日设置").DataRows

     Dim qs As Integer = dr("每月第一天")

     Dim js As Integer = dr("每月最后一天")

     Dim dt1 As New Date(y-1, 12, qs)

     Dim dt2 As New Date(y, 12, js) \'获取本月的最后一天

     Dim Filter As String

     Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

     CurrentTable.Filter = Filter

Next

去年

Dim y As Integer = Date.Today.Year

Dim m As Integer = Date.Today.Month

Dim d As Integer = Date.Today.day

For Each dr As DataRow In DataTables("月份起始日设置").DataRows

     Dim qs As Integer = dr("每月第一天")

     Dim js As Integer = dr("每月最后一天")

     Dim dt1 As New Date(y-2, 12, qs)

     Dim dt2 As New Date(y-1, 12, js) \'获取本月的最后一天

     Dim Filter As String

     Filter = "日期 >= #" & dt1 & "# And 日期 <= #" & dt2 & "#"

     CurrentTable.Filter = Filter

Next

l

[此贴子已经被作者于2014-9-15 18:53:23编辑过]

--  作者：有点甜
--  发布时间：2014/9/15 17:57:00
--
不错，mark

--  作者：lyfxybc
--  发布时间：2014/9/15 18:02:00
--
这是在老师您的帮助下完成的，谢谢