I am working on a web application which uses the FileUpload control. I have an xls file in the full filepath 'C:\Mailid.xls' that I am attempting to upload.
When I use the command
FileUpload1.PostedFile.FileName
I cannot get the full filepath from my system. However, when I use the above command in another system it works fine.
I also tried the following commands with no success:
System.IO.Path.GetFullPath(FileUpload1.PostedFile.FileName);
Path.GetFileName(FileUpload1.PostedFile.FileName);
System.IO.Path.GetDirectoryName(FileUpload1.PostedFile.FileName).ToString();
Convert.ToString(System.IO.Directory.GetParent(FileUpload1.PostedFile.FileName));
How can I get full path?
It's currently true that "when you upload a file the browser will only send the source filename and not the full path" - it makes perfect sense that the server has no business knowing whether the file was in "C:\WINDOWS\" or "F:\SOMEDIR\OTHERDIR\PERSONALINFO\". The filename is always sent, and is useful both to help the user 'recognise' the content and possibly to interrogate the file extension to help determine the file type.
However I know from experience that Internet Explorer definitely used to (in older versions) send the entire path. It's difficult to find an authoritative confirmation (except this apache fileupload control doco)
Internet Explorer provides the entire path to the uploaded file and not just the base file name
Regardless, you should not use nor expect the full path to be sent by any 'modern' browser.
Perhaps you misunderstand the way FileUpload works.
When you upload a file, it is effectively being transferred from the client's computer to the server hosting your application. If you're developing the application, most times, both client and server are the same machine (your computer). Once the application is deployed however, there could be any number of clients connecting to the server, each uploading a different file.
Knowing the full path of the file on the client's computer usually isn't necessary - you'll often want to do something with the file contents. Your examples seem like ASP.NET C#, so I'm guessing you're using the FileUpload control. You can get at the uploaded file's contents by reading the raw stream (FileUpload.PostedFile.InputStream) or by saving the file first (FileUpload.PostedFile.SaveAs), then accessing the saved file. It's your responsibility to save the file, if you want it to be accessible after the current request - if you don't, ASP.NET deletes it.
One more thing - don't forget to set the enctype property on your form to "multipart/form-data". If you don't, the client's browser won't send the file, and you'll spend quite a few minutes wondering what went wrong.
Try
Server.MapPath(FileUpload1.FileName);
Edit: This answer describes how to get the path to a file on the server. It does not describe how to get the path to a file on the client, which is what the question asked. The answer to that question is "you can't", because modern browser will not tell you the path on the client, for security reasons.
As of IE8, the full path is no longer sent to sites in the Internet Zone.
See the "File Upload Control" section at the end of this post: http://blogs.msdn.com/ie/archive/2008/07/02/ie8-security-part-v-comprehensive-protection.aspx for discussion.
FileUpload will never give you the full path for security reasons.
Convert.ToString(FileUpload1.PostedFile.FileName);
IE 7 and previous versions sent the full path of the uploaded file to the server related to the input type="file" field. Firefox and other modern browsers consider this to be a security flaw and do not. However, this appears to be have been fixed in IE 8.
Perhaps you should instead evaluate why you need the full path to the file as it was located on the client's system. I think it is really superfluous information that should never be posted at all. All you should be concerned with the is the file name so that you can save the file without making changes to the name.
Just to give my 2 cents.
At this moment I also DO get the full user's local path. It's only from 1 machine that I can replicate this issue, but it really does give the full path of the file at the machine of the user.
This is a end-user of our application which is hosted on a off-site server. So it's not on the local machine nor on a local server from which it might happen to be a share.
You can resolve the issue, at least to have the same behaviour all the time by this:
Path.GetFileName(fileUpload.FileName)
Btw, just found this article which states it can happen too: http://www.eggheadcafe.com/community/aspnet/17/10092650/fileupload-control-pro.aspx
Just to confirm the issue.
I had sort of the opposite issue as the original poster: I was getting the full path when I only wanted the filename. I used Gabriël's solution to get just the filename, but in the process I discovered why you get the full path on some machines and not others.
Any computer joined to domain will give you back the full path for the filename. I tried this on several different computers with consistent results. I don't have an explanation for why, but at least in my testing it was consistent.
Check this:
<%# Page Language="VB" AutoEventWireup="false" CodeFile="FileUp.aspx.vb" Inherits="FileUp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="Label1" runat="server"></asp:Label><br />
<asp:FileUpload ID="FileUpload1" runat="server" /><br />
<asp:Button ID="Button1" runat="server" Text="Upload" />
</div>
</form>
</body>
</html>
Code:
Partial Class FileUp
Inherits System.Web.UI.Page
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim path As String
Dim path1 As String
path = Server.MapPath("~/")
FileUpload1.SaveAs(path + FileUpload1.FileName)
path1 = path + FileUpload1.FileName
Label1.Text = path1
Response.Write("File Uploaded successfully")
End Sub
End Class
This dumps the file in your temp folder with file name, then after that you can call it and not worry about it. Because it will get deleted if it is in your temp folder for an amount of days.
string filename = Path.Combine(Path.GetTempPath(), Path.ChangeExtension(Guid.NewGuid().ToString(),".xls"));
File.WriteAllBytes(filename, FileUploadControl.FileBytes);
I'm using IE 8 (on two separate machines). Each still uploads the full local file path. As suggested by Gabriël, Path.GetFileName(fileUploadControl.PostedFile.FileName) appears to be the only way to ensure that you only get the filename.
Check this post under FileUpload Control
Additionally, the “Include local directory path when uploading files” URLAction has been set to "Disable" for the Internet Zone. This change prevents leakage of potentially sensitive local file-system information to the Internet. For instance, rather than submitting the full path C:\users\ericlaw\documents\secret\image.png, Internet Explorer 8 will now submit only the filename image.png.
Its an option under Internet security that can be enabled
dim path as string = FileUpload1.PostedFile.FileName
By the way, I am using Visual Studio 2010. I don't know if there is a difference with the other version.
This will not problem if we use IE browser.
This is for other browsers, save file on another location and use that path.
if (FileUpload1.HasFile)
{
string fileName = FileUpload1.PostedFile.FileName;
string TempfileLocation = #"D:\uploadfiles\";
string FullPath = System.IO.Path.Combine(TempfileLocation, fileName);
FileUpload1.SaveAs(FullPath);
Response.Write(FullPath);
}
Thank you
You can't get full path of a file at client's machine. Your code might work at localhost because your client and the server is the same machine and the file is at the root directory. But if you run it on a remote machine you will get an exception.
On Internet Explorer Options, on security tab click on custom security button, there have an option to send the local path when loading some file to server.
Disabled as default. Just enable it.
Path.GetFullPath(fileUpload.PostedFile.FileName);
Sorry this 'll get your program file directory + your file name.
Related
I have an application that allows the user to upload a file (saving it to in a folder located in the wwwroot of the ASPNETCORE application). From here they can make edits to it and then they can choose to export the file as a csv/ xml/ xlsx which downloads the file to the user's 'downloads' folder.
While debugging in Visual Studio this all works fine however when I publish and deploy the application to IIS I am getting the exception
Error saving file C:\windows\system32\config\systemprofile\Downloads(FILE NAME)
Could not find part of the path C:\windows\system32\config\systemprofile\Downloads(FILE NAME)
This is the current way I am getting the downloads folder:
FileInfo file = new FileInfo(Path.Combine(Environment.ExpandEnvironmentVariables(#"%USERPROFILE%\Downloads"), data.Filename + "." + data.FileType));
However I have also tried the solution that Hans Passant has answered to a similar question here. Both solutions worjk fine while debugging locally however as soon as I publish them, this one produces the exception:
Value cannot be null. Parameter name: path1
Which I presume is thrown at this point here when I try and save the file to the user's download folder.
using (var package = new ExcelPackage(file))
{
var workSheet = package.Workbook.Worksheets.Add("ExportSheet");
workSheet.Cells.LoadFromCollection(exports, true);
package.Save();
}
I don't really know how I would be able to reproduce these exceptions seeing as locally using Visual Studio it all works fine.
Has anyone else came across this issue while trying to download a file?
UPDATE: When the application is running on IIS, it seems to be using that as the user profile instead of the actually user, so when it tries to navigate to the Downloads folder, it cannot find it. How can I force it to use the user's profile?
LoadUserProfile is already set to True.
Web applications have no knowledge of the end-user's computer's filesystem!
So using Environment.GetFolderPath or Environment.ExpandEnvironmentVariables in server side code will only reveal the server-side user (i.e. the Windows Service Identity)'s profile directories which is completely separate and distinct from your web-application's actual browser-based users OS user profile.
As a simple thought-experiment: consider a user running a weird alien web-browser on an even more alien operating system (say, iBrowse for the Amiga!) - the concept of a Windows-shell "Downloads" directory just doesn't exist, and yet here they are, browsing your website. What do you expect your code would do in this situation?
To "download" a file to a user, your server-side web-application should serve the raw bytes of the generated file (e.g. using HttpResponse.TransmitFile) with the Content-Disposition: header to provide a hint to the user's browser that they should save the file rather than try to open it in the browser.
I update database from excel using FileUpload (ASP .NET).
<asp:FileUpload ID="File1" runat="server" Text="File..."/>
When I'm using IE11 I can get path to file from PC. But I can't get path to file when I'm using Chrome (Opera). How can i get a full path from FileUpload?
I try get path:
//get full path
string path = System.IO.Path.GetDirectoryName(file.PostedFile.FileName);
but it is work only with IE.
Why do you need the full path of client I don't know, but you can't retrieve client file path. Because, modern browsers don't provide that information for security reasons. Imagine that, if you get the full path, it would give you some critical informations about the client and its file system or network mapping.
So, it is not possible. Also, i don't know maybe there is a setting on browsers to give upload path information even so only the client must decide it to provide this information.
I saved aspx page as html it worked in my local machine but after published on the server its showing an error that "the access to the path is denied"... I tried giving access permission then also it doesn't work.. can anyone help with it? or else is there any other way to save the page in C# asp.net?...
string url=HttpContext.Current.Request.Url.AbsoluteUri;
string sHtml="";
HttpWebRequest request;
HttpWebResponse response=null;
Stream stream=null;
request=HttpWebRequest)WebRequest.Create(url);
response=(HttpWebResponse)request.GetResponse();
stream=response.GetResponseStream();
StreamReader sr=new StreamReader(stream,System.Text.Encoding.Default);
sHtml=sr.ReadToEnd();
string path=Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
string textfilename=TextBox1.Text;
string getpath=path+"\\"+textfilename+".html";
File.WriteAllText(getpath,sHtml);
if(stream!=null)stream.Close();
if(response!=null)response.Close();
Thanks..
If you need to save a file use this to get the application path
Server.MapPath(#"filename.txt");
Try this because when you only write the filename at an web server you are trying to access to a Microsoft.Net folder.
yes make sure the folder you write to has the appropriate privileges. IIS 5 uses ASPNET account, IIS6 uses network service. Just give read/write to the proper account. Is this your dev environment, or a prod environment?
Also, make sure it's pointing to a folder; desktop folder for ASPNET account probably won't exist since ASPNET account isn't a user with a users folder.
I had a similar problem when trying to deploy CSS from a ZIP downloaded from the web. Try right-clicking on the aspx file from windows explorer and checking the file properties. One of the tabs may indicate that the file has been "blocked". If so, there will be a button there to unblock it.
I have a problem with my code. My code is using the fileupload control to browse for a filename when you add a filename it processes it and the code runs fine on when it lives on local host, but when I put the code on our prodution server it cannot find the filenames listed by user.
For example if I use the upload control to browse to
B:\MIS\CH Intive\RPTTOFL_3.csv and the code lives on my localhost which know what that file path means it works, but if the code is moved to a production server it may or maynot know what B:/ is or B:/ maybe mapped to something else.
Even if I am browsing to a file on my C drive it will work on if the code is on the machine that the C drive is on, but it will not work if the code is on another machine because obviously that file wouldnt be on that C drive.
Private Function CSV2DataTable(ByVal filename As String) As DataTable
Using MyReader As New _
Microsoft.VisualBasic.FileIO.TextFieldParser(filename)
MyReader.TextFieldType = FileIO.FieldType.Delimited
.
.
.
What can I do in asp.net to make the filename work correctly?
Ok lets say I get the filename and save it as so
FileUploadControl.SaveAs(Server.MapPath("~/") + filename);
now I want to pass the filename to the function above for processing. Do I pass Server.MapPath("~/") + filename as the filename? Also when I am done what do I do to delete the file from the server?
It seems that you are mixing the client and server locations of the file. Before reading the uploaded file, the server-side code must save it on the server (client-side file location is mostly irrelevant at this point). From VS help on FileUpload class: "The code that you write to save the specified file should call the SaveAs method, which saves the contents of a file to a specified path on the server." The online help topic on FileUpload control has enough information (with examples) to achieve what you need.
I have a file that I can get to with the UNC \mypath\myfile. I retrieve the path with c# and assign it to a link. The browser opens the file inside itself (ie display in the browser) without problem. But, when I try and save to \mypath\myfile I am prompted to save it locally. If I view the file outside of the browser (IE 7) I can edit and save as expected, again, via the UNC.
What I trying to do is use iframe to display the file from my UNC (file:///\mypath\myfile), which does work, but now I can't edit it. Outside the browser I can.
Is there anyway to save a PDF when displaying it inside the browser? I also tried a button to use the save method on the pdf, but it did not work.
Thank you.
I am using IE 7 and Adobe Professional 7.1.0.
When you open a file via a web browser the web browser downloads the file locally, then sends a local file path to the application that opens it. Even in the case you are using a UNC in your href Adobe does not get that UNC path to save back to, it is getting a local machine path. Keep in mind the browser does the same thing even if the UNC is a local machine path.
I don't think that the behavior you want is possible.
<body>
<div style="height:80px">
<p>Save
</div>
<div>
<iframe width="100%" height="100%" src="pdfname.pdf" />
</div>
</body>
On downloadpdf.aspx's page load event,add:
Response.AddHeader("content-disposition","attachment; filename=pdfname.pdf")
Response.ContentType = "application/pdf"
Server.Transfer("pdfname.pdf")
Untested, but should give you an idea...
Saving a PDF in your browser (through File-Save As in IE etc) or Save A Copy in the Adobe system will always prompt you to save it locally. You could navigate manually to your UNC path, but this is browser behaviour, not server behaviour.