Question

我正在尝试对列出目录文件的gridview进行排序。

我试图以各种不同的方式对资源进行排序：

http://forums.asp.net/t/963636.aspx?Default+sort+order+in+GridView sorting and paging with gridview asp.net http://forums.asp.net/t/1076872.aspx?Gridview+how+to+find+a+column+by+it+s+column+name+rather+than+it+s+Cell+index+ http://forums.asp.net/t/963636.aspx?Default+sort+order+in+GridView

但是，每次重新加载页面时，文件都不按升序排序。

我希望能够通过文件＆＃34;价值＆＃34; [列：文件名]，因为那样可以得到我想要的结果，但没有任何效果。

我也尝试了VB.NET Sort files in directory by alphanumeric：

For Each filePath As String In filePaths.OrderBy(files)

 files.Add(New ListItem(Path.GetFileName(filePath), filePath))
 'files.Add(New ListItem(Path.GetFileName(filePath)

Next

但是从行filePaths.OrderBy(files)获取错误，因为括号内的信息是错误的。

有什么建议吗？

仅供参考：出于安全目的，Directory.GetFiles的路径是假的

Dim filePaths() As String = Directory.GetFiles("\\...\...\uploads\attachments\")

Dim files As List(Of ListItem) = New List(Of ListItem)

  For Each filePath As String In filePaths

    files.Add(New ListItem(Path.GetFileName(filePath), filePath))

  Next

   DisplaySup.DataSource = files
   DisplaySup.DataBind()
   DisplaySup.Sort("File Name", System.Web.UI.WebControls.SortDirection.Ascending)


   'If [String].IsNullOrEmpty(DisplaySup.SortExpression) Then
      'DisplaySup.Sort("SortExpression", SortDirection.Ascending)
      'DisplaySup.DataBind()
   'End If

HTML

<asp:GridView ID="DisplaySup" runat="server" align="center" AutoGenerateColumns="False" BorderColor="Black" BorderStyle="Solid" Font-Size="Small">
<Columns>

<asp:TemplateField HeaderText = "Delete File" SortExpression="Value">
   <ItemTemplate>
      <asp:button ID = "btnDelete" cssClass = "submit-btn small" Text = "Delete" CommandArgument = '<%# Eval("Value") %>' runat = "server" OnClick = "DeleteFile" />
   </ItemTemplate>
</asp:TemplateField>


 <asp:TemplateField HeaderText = "File Name" SortExpression="Value">
   <ItemTemplate >
           <asp:LinkButton ID="lnkDownload" Text = '<%# Eval("Value").ToString().Substring(39) %>' CommandArgument = '<%# Eval("Value") %>' runat="server" OnClick = "DownloadFile"></asp:LinkButton>
      </ItemTemplate>
 </asp:TemplateField>
 </Columns>

 <HeaderStyle BackColor="#BDBDAE" Font-Underline="False" 
  CssClass="linkNoUnderline" HorizontalAlign="Left" />
</asp:GridView>

更新：我还尝试了以下示例GridView Sorting Question，并再次对gridview进行排序

Answer 1

找到解决问题的方法。

我引用了：Sorting Directory.GetFiles()

并执行以下操作以对目录进行预排序，然后在gridview中列出文件：

Dim filePaths() As String = Directory.GetFiles("\\...\uploads\attachments\")

'Sort the directory
Dim FilesStr() As String
FilesStr = filePaths
Array.Sort(FilesStr)

'Get each file
Dim files As List(Of ListItem) = New List(Of ListItem)

For Each filePath As String In filePaths

  files.Add(New ListItem(Path.GetFileName(filePath), filePath))
Next

DisplaySup.DataSource = files
DisplaySup.DataBind()

VB.net排序文件列出的Gridview

1 个答案: