The HttpFileCollection (Request.Files) is always empty with a count of zero. RSS

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  aa1803

  Member

  1 Points

  12 Posts

  The HttpFileCollection (Request.Files) is always empty with a count of zero.

  Sep 20, 2008 07:04 PM|LINK

   Hi,

  I have file upload as an ItemTemplate in the gridview. I handle multiple file uploads using HttpFileCollection in the code behind. My problem is when I try to upload some files and iterate though the HttpFileCollection, the HttpFileCollection (Request.Files) was always empty with a count of zero. I am using ASP.NET 3.5 SP1.

  Any help would be much appreciated. 
  

   

   Here are some snap of my aspx page
  

  <asp:UpdatePanel ID="UpdatePanel1" runat="server">
      <ContentTemplate>
          <asp:ValidationSummary ID="ValidationSummary1" runat="server" EnableClientScript="true"
              HeaderText="List of validation errors" Font-Size="Small" />
          <asp:Label ID="Label3" runat="server" Font-Size="Small" ForeColor="Red" />
          <asp:DynamicValidator runat="server" ID="GridViewValidator" ControlToValidate="GridView1" Display="None" />
          
          <br />
          <table>
              <tr>
                  <td>
                      <asp:Label ID="Label1" Font-Size="Small" runat="server" Text="Fund: " AssociatedControlID="DynamicFilter$DropDownList1" />
                  </td>
                  <td>
                      <asp:DynamicFilter runat="server" ID="DynamicFilter" ContextTypeName="PiedmontDataContext" TableName="Investors" DataField="Fund" OnSelectedIndexChanged="OnFilterSelectedIndexChanged" />
                  </td>
              </tr>
              <tr>
                  <td>
                      <asp:Label ID="Label2" Font-Size="Small" runat="server" Text="Date: " />
                  </td>
                  <td>
                      <asp:TextBox ID="Date1" runat="server" Width="175" OnTextChanged="Date1_TextChanged" AutoPostBack="true" />
                      <asp:Image ID="Image1" runat="server" ImageUrl="~/Images/Calendar_scheduleHS.png" />
                      <ajaxToolkit:CalendarExtender ID="CalendarExtender1" runat="server" Format="MM-dd-yyyy"
                          TargetControlID="Date1" PopupButtonID="Image1">
                      </ajaxToolkit:CalendarExtender>
                   </td>
  
              </tr>
          </table>
  
          <br /><br /><br />
  
          <asp:GridView ID="GridView1" runat="server" DataSourceID="GridDataSource"
              AllowSorting="True" BorderColor="#E7E3E3"
              BorderWidth="1" CellPadding="10" AutoGenerateColumns="false" >
              <Columns>
      	    	    
                  <asp:TemplateField HeaderText="Fund" SortExpression="FundName">
                      <ItemTemplate>
                          <asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='<%# "~/Funds/ListDetails.aspx?FundID=" + Eval("FundID")%>' Text='<%# Eval("FundName") %>' />
                      </ItemTemplate>
                  </asp:TemplateField>
                  <asp:TemplateField HeaderText="Investor" SortExpression="InvestorName">
                      <ItemTemplate>
                          <asp:HyperLink ID="HyperLink2" runat="server" NavigateUrl='<%# "~/Investors/Details.aspx?InvestorID=" + Eval("InvestorID")%>' Text='<%# Eval("InvestorName") %>' />
                      </ItemTemplate>
                  </asp:TemplateField>
      	    	
                  <asp:TemplateField ItemStyle-Width="300" HeaderText="Broswe Report" HeaderStyle-Font-Size="Small" >
                      <ItemTemplate>
              			 <input id="File1" name="File1" type="file" size="23" runat="server" />
                      </ItemTemplate>
                  </asp:TemplateField>
  
              </Columns>
  
              <EmptyDataRowStyle Font-Size="Small" />
              <EmptyDataTemplate>
                  There are currently no Investor in this fund.
              </EmptyDataTemplate>
              
          </asp:GridView>
          
          <asp:LinqDataSource ID="GridDataSource" runat="server" ContextTypeName="PiedmontDataContext" TableName="Investors" OnSelecting="GridDataSource_Selecting" >
              <WhereParameters>
                  <asp:DynamicControlParameter ControlID="DynamicFilter" />
              </WhereParameters>
          </asp:LinqDataSource>
          <br />
          <asp:Button
              ID="Button1"
              Text="Upload All"
              OnClick="Button1_Click"
              runat="server" />
          </ContentTemplate>
      </asp:UpdatePanel>

   
   And here are the code behind of the onClick event:
   

      protected void Button1_Click(object sender, EventArgs e)
      {
          string filepath = "~/Uploads/InvestorReports/";
          HttpFileCollection uploadedFiles = HttpContext.Current.Request.Files;
  
          for (int i = 0; i < uploadedFiles.Count; i++)
          {
              HttpPostedFile userPostedFile = uploadedFiles[i];
              if (userPostedFile.ContentLength == 0)
              {
                  continue;
              }
  
              string filename = userPostedFile.FileName;

              try
              {
  
                 userPostedFile.SaveAs(Server.MapPath(filepath) + filename);
                 
              }
              catch (Exception Ex)
              {
                 Label3.Text = "Error: <br />" + Ex.Message + "&lt;br />";
              }
              
           }
  
           Response.Redirect("~/InvestorReports/ListDetails.aspx"); 
  
      }
  

   
  

  HttpFileCollection

  • Moved by mbanavige on Sep 20, 2008 08:59 PM
  • Edited by aa1803 on Sep 21, 2008 01:41 AM
  • Edited by aa1803 on Sep 21, 2008 01:10 PM
• • Reply
  

  aa1803

  Member

  1 Points

  12 Posts

  Re: The HttpFileCollection (Request.Files) is always empty with a count of zero.

  Sep 21, 2008 12:10 PM|LINK

   I think I've managed to fix it. All I did was to take the Upload button outside the update panel.
  

  • Marked as answer by aa1803 on Sep 21, 2008 12:11 PM