I have a file which is stored at a physical disk say var path = file://Servername/SampleFiles/abc.docx. Now when I am trying to add this into below code
File.SetAttributes(path, FileAttributes.ReadOnly);
With above line of code I am getting URI file format is not supported whereas if I am trying to add path like var path = //Servername/SampleFiles/abc.docx then above line is working fine but I am getting a prompt on Internet Explorer as Only Secure content is displayed
Please guide guide me to remove the IE prompt, I don't want users to disable it from IE, as it will be security issues.
Related
I have a UWP project, and wrote this code:
foreach (var foldertype in (Environment.SpecialFolder[])Enum.GetValues(typeof(Environment.SpecialFolder)))
{
//string d = Environment.CurrentDirectory;
var path = Environment.GetFolderPath(foldertype);
var folder = await StorageFolder.GetFolderFromPathAsync(path);
StorageApplicationPermissions.FutureAccessList.Add(folder, folder.Path);
Debug.WriteLine($"Opened the folder: {folder.DisplayName}");
this.MenuFolderItems.Add(new MenuFolderItem(folder));
}
It is supposed to enumerate all the special folders, and get their folder. However, while debugging, this is what happens:
foldertype = Desktop
path = "C:\\Users\\cuent\\AppData\\Local\\Packages\\402b6149-1adf-4994-abc9-504111b3b972_a5s740xv383r0\\LocalState\\Desktop"
folder = [ERROR] System.IO.FileNotFoundException: 'The system cannot find the file specified. (Exception from HRESULT: 0x80070002)'
I do not know what is happening here, it seems to be appending the path to the installed location of the app. How do I fix this?
Expected output of GetFolderPath() is wherever the Desktop is, not the weird path.
UWP apps are different from desktop applications when accessing the file system. UWP apps are running in the sandbox so there are limitations for UWP apps when trying to access the file system. You could check this document: File access permissions. The document lists all the locations that UWP apps have permission to access.
Back to your scenario, what you need first is a broadFileSystemAccess restricted capability. This capability enables your app could use the StorageFolder.GetFolderFromPathAsync() API with a Path parameter. This is mentioned in the last part of the document I posted above.
Then the second issue is the Environment.GetFolderPath API. It looks like the API will return a Path that points to a local folder inside the app's local folder. But there is no such desktop folder inside the app's local folder so you will get the FileNotFoundException. You might need to set the correct path by yourself like C:\Users\your user name\Desktop. After that, your code should be able to work correctly.
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.
When using the below code to try to open File Explorer to a folder path I get the errors SEC7134: Resource 'file://...' not allowed to load, and SCRIPT70: Permission denied.
However if I copy the exact path returned in the error and past it into the url it opens a new file explorer window without any issues. This was working at one time for me as expected, I'm wondering if there have been security changes or things that need to be updated on my side to open these files in File Explorer again.
Thanks,
function openFile(path) {
// Internet Explorer 6-11
var isIE = /*#cc_on!#*/false || !!document.documentMode;
// Edge 20+
var isEdge = !isIE && !!window.StyleMedia;
if (isIE || isEdge) {
window.location.href = path;
return false;
}
}
Yes, we could use the browser as file explorer to retrieve the files in our local environment. But, reading local files from the browser (using JavaScript) is not allowed. This will prevent websites reading files and stealing your information.
If you want to display the local file using JavaScript, you could use the upload control select the local file, then, read the file and display it.
In simple way, I want to save some data in XML file when i tried this code it ran successfully but,unfortunately i didn't the file in the project folder or anywhere on my computer.When I changed the path also i didn't find it.
The following is the used code
string configFile = #"config.xml";
XmlDocument xml = new XmlDocument();
XmlElement element = xml.CreateElement("Configuration");
xml.AppendChild(element);
//---create the <LastAccess> element---
element = xml.CreateElement("LastAccess");
element.InnerText = DateTime.Now.ToString();
xml.DocumentElement.AppendChild(element);
//---create the <LastSearchString> element---
element = xml.CreateElement("LastSearchString");
element.InnerText = "sushi";
xml.DocumentElement.AppendChild(element);
xml.Save(configFile);
Can you help me in this problem please.
When I wrote this code and ran the application the file must be saved whatever where
XmlDocument xml = new XmlDocument();
XmlElement element = xml.CreateElement("First");
xml.AppendChild(element);
element = xml.CreateElement("Second");
element.InnerText = "LaLa";
xml.DocumentElement.AppendChild(element);
xml.Save(#"XML.xml");
and then i try this code as the file has been saved
element.InnerText = "LaLa";
xml.DocumentElement.AppendChild(element);
xml.Save(#"XML.xml");
I got that exception Could not find file '\XML.xml'.
please can you help me in this problem.
The emulator is, for all intents and purposes of this question, a completely separate device. It does not "share" any part of it's file system with the host PC, so there's no way to "browse" it's files (like the one you created" from the PC's Windows Explorer, or the standard file system APIs.
If you want access to the file from the PC, you need to use one of the following to retrieve it:
Configure the emulator to share a folder with the PC. This is don't in the options of the Emulator itself and allows you to "mount" a Host PC folder. That folder becomes the "\Storage Card" root folder in the emulator, so you'd have to change your code appropriately (i.e. save to "\storage card\config.xml")
Use a tool like Remote Registry Editor (in the Start menu under Visual Studio 22008 remote tools), connect to the emulator and download the file.
Use the Emulator Manager to "dock" the emulator so it shows up in ActiveSync/WMDC. When that occurs, a shell extension will show the device in Windows Explorer - though be aware that it is purely a shell extension. There is still no file API access to that system, so you could not write a desktop app that navigates to "My Device\MyFolder\MyFile.xml".
I wrote some code to upload files to amazon S3, if I put a full file path manually It successfully uploads the file from my computer. What I'm trying to do is use a file upload control and store the full path in a variable so that I can use it for my amazon method. Ive read everywhere it seems that the browser won't let you get the full file path for security reasons.
How can I get the full file path? Should I just store the files on my webserver and point my amazon method to the server path, and then use the file upload control to tell it what the filename is? I wish I could just do a straight shot to amazon...
First we have to save the file path and then we take it from
string filepath=Path.GetFullPath(UploadFile1.FileName.toString());
I came across this link which has a great tutorial and even gives you a working sample project. (this is different from the code that the .net SDK includes...) http://aws.amazon.com/articles/774?_encoding=UTF8&jiveRedirect=1
We can't take full path in HTML or JS as it violets security so whenever you try to see the path it shows fakepath
so to resolve this issue you can make a seprate folder and you can store the uploaded file there and in the code you can take that folders path as default and use it as a absolute path.
You can get the full path using Python Tkinter but it is limited for desktop app.