按月份和年份asp.net分组显示记录 [英] Displaying records grouped by month and year in asp.net
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问题描述
我需要按日期我的记录(月&安培;年)整理我的asp.net页面上显示;结果
任何意见/建议将是有益的。
这是code我目前有
<表格的宽度=40%BORDER =0的风格=保证金左:自动;保证金右:自动;>
< TR>< TD>< ASP:标签ID =lblGridHeader的CssClass =TEXTFONT文本==服务器>< / ASP:标签>< / TD>< / TR&GT ;
&所述; TR>
< TD ALIGN =中心>
< ASP:GridView控件ID =gvInvoiceList=服务器的AutoGenerateColumns =false的AllowSorting =真>
<列>
< ASP:的TemplateField ItemStyle-WIDTH =10%的HeaderText =文件类型>
<&ItemTemplate中GT;< ASP:超链接ID =imgFileType的ImageUrl =图片/ Icon_Pdf.gifNavigateUrl ='<%#SetNavigateUrl(EVAL(姓名))%GT;' =服务器>< / ASP:超链接>< / ItemTemplate中>
< / ASP:的TemplateField>
< ASP:BoundField的数据字段=名称HEADERTEXT =#发票/>
< ASP:BoundField的数据字段=LastWriteTimeHEADERTEXT =修改日期/>
< /列>
< / ASP:GridView的>
< / TD>
< / TR>
< /表>
后面的 code:
如果files.Count> 0,则
昏暗DT作为新的DataTable()
DT.Columns.Add(新的DataColumn(名,System.Type.GetType(System.String)))
DT.Columns.Add(新的DataColumn(LastWriteTime,System.Type.GetType(System.String))) 昏暗strCurrentMonth作为字符串= 对于每个F作为的FileInfo在文件列表中
如果(MONTHNAME(f.LastWriteTime.Month)LT;> strCurrentMonth)和(strCurrentMonth<>中),然后
gvInvoiceList.DataSource = DT
gvInvoiceList.DataBind() lblGridHeader.Text = MONTHNAME(f.LastWriteTime.Month)及 - 与&年(f.LastWriteTime)
其他
lblGridHeader.Text = MONTHNAME(f.LastWriteTime.Month)及 - 与&年(f.LastWriteTime)
万一 昏暗ROW1作为的DataRow
ROW1 = DT.NewRow()
ROW1(姓名)= f.Name
ROW1(LastWriteTime)= f.LastWriteTime
DT.Rows.Add(ROW1) strCurrentMonth = MONTHNAME(f.LastWriteTime.Month)
下一个
gvInvoiceList.DataSource = DT
gvInvoiceList.DataBind()
其他
lblSummary.Text =没有数据显示。
万一
解决方案
您可以使用中继器做到这一点。事情的如的这个(你应该能够很容易地适应它):
< ASP:直放站ID =RPT=服务器OnItemDataBound =rpt_RowDataBound>
<&ItemTemplate中GT;
<表=服务器的风格=颜色:白色,背景色:#3A4F63;可见=假
ID =headerTable>
&所述; TR>
&所述; TD列跨度=3>
< ASP:标签ID =headerTitle=服务器>< / ASP:标签>
< / TD>
< / TR>
&所述; TR>
< TD风格=宽度:200像素;背景颜色:#3A4F63;颜色:白色;>
名称
< / TD>
< TD风格=宽度:200像素;>
目录名称
< / TD>
< TD风格=宽度:200像素;>
创建时间
< / TD>
< / TR>
< /表>
&所述;! - 这些是实际的数据项 - >
<! - 绑定到特定的属性,即发票#,文件类型等 - >
<表>
&所述; TR>
< TD风格=宽度:200像素;>
< ASP:标签ID =lblName=服务器文本='<%#的eval(姓名)%>'>< / ASP:标签>
< / TD>
< TD风格=宽度:200像素;>
< ASP:标签ID =lblDirName=服务器文本='<%#的eval(目录名)%>'>< / ASP:标签>
< / TD>
< TD风格=宽度:200像素;>
< ASP:标签ID =lblCreationTime=服务器文本='<%#的eval(CREATIONTIME)%>'>< / ASP:标签>
< / TD>
< / TR>
< /表>
< / ItemTemplate中>
< / ASP:直放站>
在code背后, OnItemDataBound
是这样的:
私人月份为整数= -1
私人今年为整数= -1
保护小组rpt_RowDataBound(发送者为对象,E为RepeaterItemEventArgs) 如果e.Item.ItemType = ListItemType.Item OrElse运算e.Item.ItemType = ListItemType.AlternatingItem然后
绑定到的FileInfo对象。要绑定到数据表。相应调整
如果一个月<> TryCast(e.Item.DataItem,FileInfo的).CreationTime.Month OrElse运算年<> TryCast(e.Item.DataItem,FileInfo的).CreationTime.Year然后
月= TryCast(e.Item.DataItem,FileInfo的).CreationTime.Month
年= TryCast(e.Item.DataItem,FileInfo的).CreationTime.Year
e.Item.FindControl(headerTable)。可见=真
TryCast(e.Item.FindControl(headerTitle),标签)。文本=文件为&放大器; TryCast(e.Item.DataItem,FileInfo的).CreationTime.ToShortDateString()
其他
e.Item.FindControl(headerTable)。可见=假
万一
万一
结束小组
我绑定我的数据中继的方式是这样的:
昏暗网络上网的FileInfo()=新的DirectoryInfo(C:\\)。的GetFiles()OrderByDescending(功能(X)x.CreationTime).ToArray()
rpt.DataSource =网络
rpt.DataBind()
产生这样的输出:
I need to sort my records by date (month & year) as displayed on my asp.net page;
Any ideas / suggestions would be helpful.
This is the code I currently have
<table width="40%" border="0" style="margin-left:auto; margin-right:auto;">
<tr><td><asp:Label ID="lblGridHeader" CssClass="TextFont" Text="" runat="server"></asp:Label></td></tr>
<tr>
<td align="center">
<asp:GridView ID="gvInvoiceList" runat="server" AutoGenerateColumns="false" AllowSorting="true">
<columns>
<asp:TemplateField ItemStyle-Width="10%" HeaderText="File Type">
<ItemTemplate><asp:HyperLink ID="imgFileType" ImageUrl="images/Icon_Pdf.gif" NavigateUrl='<%# SetNavigateUrl(Eval("Name")) %>' runat="server"></asp:HyperLink></ItemTemplate>
</asp:TemplateField>
<asp:boundfield datafield="Name" headertext="Invoice #"/>
<asp:boundfield datafield="LastWriteTime" headertext="Date Modified"/>
</columns>
</asp:GridView>
</td>
</tr>
</table>
Code behind:
If files.Count > 0 Then
Dim DT As New DataTable()
DT.Columns.Add(New DataColumn("Name", System.Type.GetType("System.String")))
DT.Columns.Add(New DataColumn("LastWriteTime", System.Type.GetType("System.String")))
Dim strCurrentMonth As String = ""
For Each f As FileInfo In files
If (MonthName(f.LastWriteTime.Month) <> strCurrentMonth) And (strCurrentMonth <> "") Then
gvInvoiceList.DataSource = DT
gvInvoiceList.DataBind()
lblGridHeader.Text = MonthName(f.LastWriteTime.Month) & " - " & Year(f.LastWriteTime)
Else
lblGridHeader.Text = MonthName(f.LastWriteTime.Month) & " - " & Year(f.LastWriteTime)
End If
Dim Row1 As DataRow
Row1 = DT.NewRow()
Row1("Name") = f.Name
Row1("LastWriteTime") = f.LastWriteTime
DT.Rows.Add(Row1)
strCurrentMonth = MonthName(f.LastWriteTime.Month)
Next
gvInvoiceList.DataSource = DT
gvInvoiceList.DataBind()
Else
lblSummary.Text = "No data to show."
End If
解决方案
You can do this with a Repeater. Something like this (you should be able to adapt it easily):
<asp:Repeater ID="rpt" runat="server" OnItemDataBound="rpt_RowDataBound">
<ItemTemplate>
<table runat="server" style="color: White; background-color: #3A4F63;" visible="false"
id="headerTable">
<tr>
<td colspan="3">
<asp:Label ID="headerTitle" runat="server"></asp:Label>
</td>
</tr>
<tr>
<td style="width: 200px; background-color: #3A4F63; color: White;">
Name
</td>
<td style="width: 200px;">
Directory Name
</td>
<td style="width: 200px;">
Creation Time
</td>
</tr>
</table>
<!-- These are the actual data items -->
<!-- Bind to your specific properties i.e. Invoice #, file type, etc. -->
<table>
<tr>
<td style="width: 200px;">
<asp:Label ID="lblName" runat="server" Text='<%#Eval("Name") %>'></asp:Label>
</td>
<td style="width: 200px;">
<asp:Label ID="lblDirName" runat="server" Text='<%#Eval("DirectoryName") %>'></asp:Label>
</td>
<td style="width: 200px;">
<asp:Label ID="lblCreationTime" runat="server" Text='<%#Eval("CreationTime") %>'></asp:Label>
</td>
</tr>
</table>
</ItemTemplate>
</asp:Repeater>
On Code Behind, the OnItemDataBound
looks like this:
Private month As Integer = -1
Private year As Integer = -1
Protected Sub rpt_RowDataBound(sender As Object, e As RepeaterItemEventArgs)
If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType = ListItemType.AlternatingItem Then
'Binding to FileInfo objects. You are binding to DataTable. Adjust it accordingly
If month <> TryCast(e.Item.DataItem, FileInfo).CreationTime.Month OrElse year <> TryCast(e.Item.DataItem, FileInfo).CreationTime.Year Then
month = TryCast(e.Item.DataItem, FileInfo).CreationTime.Month
year = TryCast(e.Item.DataItem, FileInfo).CreationTime.Year
e.Item.FindControl("headerTable").Visible = True
TryCast(e.Item.FindControl("headerTitle"), Label).Text = "Files for " & TryCast(e.Item.DataItem, FileInfo).CreationTime.ToShortDateString()
Else
e.Item.FindControl("headerTable").Visible = False
End If
End If
End Sub
The way I bound my data to the repeater is like this:
Dim fi As FileInfo() = New DirectoryInfo("C:\").GetFiles().OrderByDescending(Function(x) x.CreationTime).ToArray()
rpt.DataSource = fi
rpt.DataBind()
Produces this output:
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