Question

Error trying to upload file with asp:FileUpload

Asked by: Alan_Mc

Hiya,

In my web, there's an option to upload images to the server. If I want to just upload a file that doesn't exists, it works fine, I can do it. But if I try to upload a file with the same name as one that already exist in the server, I get the error:

Access to the path ...  is denied.
ASP.NET is not authorized to access the requested resource. Consider granting access rights to the resource to the ASP.NET request identity. ASP.NET has a base process identity (typically {MACHINE}\ASPNET on IIS 5 or Network Service on IIS 6) that is used if the application is not impersonating. If the application is impersonating via <identity impersonate="true"/>, the identity will be the anonymous user (typically IUSR_MACHINENAME) or the authenticated request user.

Now, if I go to IIS and browse to this particular folder (under "Web Sites->Library->Images"), right click on properties and I have checked "Read" and "Write" options.

If I go to the Explorer and right clicki on those images none of them have the "Read-only" property set.

It seems like I should have access to overwrite those images. And since I can upload images that do not exist already in the server, I imagine I have access to that as well.

Can anyone provide some help her eplease?

<div id="uploadForm">
                    Select file to upload:
                    <asp:FileUpload ID="FileUpload1" runat="server"></asp:FileUpload>
                    <asp:Button ID="UploadButton" Text="Upload asset" OnClick="UploadButton_Click" runat="server">
                    </asp:Button>
                    <asp:Label ID="Warning" runat="server" Style="font-weight: bold; margin-left: 15px;
                        font-style: italic"></asp:Label>
                    <asp:Label ID="Size" runat="server" Style="color: red; font-style: italic"></asp:Label>
                    <asp:Label ID="UploadStatusLabel" runat="server"> 
                    </asp:Label>
                    <asp:Label ID="ErrorLabel" runat="server" Style="clear: both; display: block; font-weight: normal;
                        float: none; visibility: visible; color: red; font-style: italic; position: static;
                        height: 5px; font-variant: normal"> 
                    </asp:Label>
                </div>
 
 
 
Protected Sub UploadButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles UploadButton.Click
.....
        If (FileUpload1.HasFile) Then
            Dim filesize As Integer = FileUpload1.PostedFile.ContentLength / 1024
            If filesize > FILE_SIZE_LIMIT Then
                Size.Text = "File too big"
            Else
Dim savePath As String = Server.MapPath(imageName)
FileUpload1.SaveAs(savePath)
                UploadStatusLabel.Text = "Your file was saved as " & fileName
           End If
        Else
            UploadStatusLabel.Text = "You did not specify a file to upload."
        End If
    End Sub

                                  
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Asked On
2008-08-27 at 09:24:20ID23682585
Tags

ASP.NET

,

Access to the path ... is denied.

Topics

Programming for ASP.NET

,

Microsoft Visual Basic.Net

Participating Experts
2
Points
250
Comments
7

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Answers

 

by: Chirag1211Posted on 2008-08-27 at 09:29:24ID: 22326663

See the error that you are getting is because in the Images folder of your application you need to grant write permission to ASPNet user then it won't throw any error for this.

Regards,

Chirag

 

by: rlh68Posted on 2008-08-27 at 09:30:57ID: 22326674

You should check for a local file first and either delete the local file before you upload the new file or rename the incoming file so it doesn't interfere with the existing file..

 

by: Alan_McPosted on 2008-08-28 at 00:57:26ID: 22332393

Thanks for the responses guys.
@Chirag1211: I don't think that't the problem, since I *can* write files in the folder. But if it is that, how would I grand the ASPNet user that permission?

@rlh68: That could be it.. But is there no way of just overwriting the file? I was looking at the FileUpload specs in microsofts page and it seems to overwrite previous files in the server.

 

by: Alan_McPosted on 2008-09-01 at 02:02:34ID: 22358484

please help..

 

by: rlh68Posted on 2008-09-08 at 19:42:59ID: 22423932

Do you have a modify permission option? Because, really you would be modifying a file if one already existed and you wanted to replace it. Just a thought.

 

by: rlh68Posted on 2008-09-25 at 16:38:49ID: 22575044

Is some process keeping a reference to the file, and thus preventing an overwrite?

 

by: Alan_McPosted on 2008-09-25 at 23:28:52ID: 22577038

Forgot to post  back! Already solved this modifying the permission from windows explorer itself (which sounds quite weird, since I donät think every developer wiould have remote access to the windows server where the page is hosted, but ok) :)
Thanks guys!

20120131-EE-VQP-002

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