主题：怎么从下拉组合框取值,如图

 根据选择的值，合成对应的日期条件，就可以了，参考

 

http://www.foxtable.com/webhelp/scr/2720.htm

 

 不会做的话，上传具体项目。

 判断选择的值，根据不同的选择，合成不同的日期条件，参考2楼的帮助文档

 

Select Case e.Sender.Text

    Case "本月"

 

    Case "本年"

 

    Case "某月" 

 

End Select

 

 你也可以换个思路，不同的值以后，在两个日期控件分别计算出具体的日期显示出来，点击查询按钮，再根据两个日期合成条件。

 把你做的项目，上传上来。

 没看到你上传的项目，请像上传图片一样正确上传。

 你去这里看看，看看有没有你的问题，如果有，就拷贝这贴发出来

 

 

此主题相关图片如下：qq截图20170427180343.png

Dim p1 As WinForm.DateTimePicker = e.Form.Controls("DateTimePicker1")
Dim p2 As WinForm.DateTimePicker = e.Form.Controls("DateTimePicker2")
Dim  y As  Integer =  Date.Today.Year
Dim  m As  Integer =  Date.Today.Month
Select Case e.Sender.Text
   
    Case "今天"
        p1.value = Date.Today
        p2.value = Date.Today
    Case "本周"
        Dim week As Integer = Date.Today.DayOfWeek '算出今天是星期几
        Dim dt1 As Date = Date.Today.AddDays(-week) '获取本周的第一天
        Dim dt2 As Date = Date.Today.AddDays(6 - week) '获取本周最后一天
       
        p1.value = dt1
        p2.value = dt2
    Case "本月"
        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
        p1.value = dt1
        p2.value = dt2
    Case "本季度"
        Dim q As Integer = (m - 1) \ 3 + 1 '计算现在是第几个季度 quarter 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(y,3 * q)) '获取本季度的最后一天
        p1.value = dt1
        p2.value = dt2
       
    Case "本年度"
        Dim dt1 As New Date(y, 1, 1)
        Dim dt2 As New Date(y, 12, 31)
        p1.value = dt1
        p2.value = dt2
       
    Case "某天"
        p1.value = Nothing
        p2.value = Nothing
        msgbox("请自己填写")
    Case "全部"
        p1.value = Nothing
        p2.value = Nothing
End Select