Cannot access a closed file filestream c#

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WebJan 8, 2024 · // Check if the file is valid. if (!Check (file.FileName, file.ContentType)) return BadRequest ("Fil ikke gyldig"); var medie = new Medie { Name = file.FileName.Trim ('\"'), ParentId = _imageService.TempFolderGuid, ContentLength = file.Length, Content = memoryStream.ToArray () }; try { var imageId = await … WebJun 19, 2024 · The issue is, either the client needs to close the stream, or the PushStreamContent needs to close it when all bytes have been written, but with the using block, you're closing it immediately when you send. Share Improve this answer Follow answered Jun 19, 2024 at 10:36 Clay 4,979 1 30 45 Add a comment 0 Removing the …

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WebJun 14, 2024 · 2 Answers Sorted by: 4 Your running into a race condition due to your usage of async void. Due to the void return type, the server code running your app can not know when your method finishes and disposes the request immediately. Use Task as the return type of your UploadFile method. WebHere's an example of the problem of a memory stream getting closed despite your desire to continue using it: /// design your own sandals

Cannot access a closed Stream when returning FileStreamResult from C# ...

WebC# (CSharp) IFormFile.OpenReadStream - 60 examples found. These are the top rated real world C# (CSharp) examples of IFormFile.OpenReadStream extracted from open source projects. You can rate examples to help us improve the quality of examples. WebMar 22, 2012 · both of the followiong lines of code are separate objects trying to access the same file: FileStream f1=new FileStream("c:\\file.xml",FileMode.Open); StreamReader sr=new StreamReader("c:\\file.xml"); so each is attempting to access teh file indivodually, whereas changing your code to my connection cases sr to access the file Through f1 WebApr 26, 2024 · Code that I tried to end the Stream after returning FileStreamResult, I am aware that it can not work, because after return File (stream, contentType, fileName) it immediately jumps to the block finally and the stream closes, so the download does not start because the stream is closed c# asp.net-core orchardcore Share Improve this question … design your own running vest

[Solved] cannot access a closed file in asp.net - CodeProject

WebAug 22, 2011 · the exception happens because AddEntry uses the FileStram and after it is finished with the FileStream it closes it automatically.. so it is closed during Save after the first file... when there is one file it is ok - but your code adds the same FileStream fs for every file... not sure that this is what you really want... I think you would want to open … WebAug 20, 2024 · FileStreamResult will dispose memoryStream for you. The reason that your code doesn't work is that the actual work that reads from memoryStream is not in your code - it is in MVC code that calls fileStream.WriteFile. But that code is executed somewhere higher up the call stack. chuck hutton toyota millbranchWebJul 6, 2024 · The ending curly brace of your using statement closes the file stream: using (fileStream) { Attachment attachment = new Attachment (fileStream, filePath); mailMessage.Attachments.Add (attachment); } // <-- file stream is closed here However, the stream is read at the time of the stmpClient.Send (mailMessage), where it is not open … design your own running shoes

"WebThis is how I am reading the file: public string addDocument (HttpPostedFile file, string typeOfDocument, int UserID, string documentID = "", int uploadedBy = 0) { Stream stream; BinaryReader bReader; byte [] bytes; stream = file.InputStream; bReader = new BinaryReader (stream); bytes = bReader.ReadBytes ( (int)stream.Length); } " - Cannot access a closed file filestream c#

Cannot access a closed file filestream c#

FileStream - Can not access a closed File

WebMar 22, 2024 · That been said, if the file was not closed, you would merely have a different exception. During. PdfReader pdfReader = new PdfReader (pdfStream); the stream is read to the end, so here. var image = iTextSharp.text.Image.GetInstance (pdfStream); there would be nothing to read from the stream. And even if you did reset the stream to the … WebOct 16, 2024 · You are trying to read/write to a stream that is already closed / disposed. private FileResult createZipFromXmlImport (ImportBase import, string fileName) { var …

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WebThis happens because the StreamReader takes over 'ownership' of the stream. In other words, it makes itself responsible for closing the source stream. As soon as your program calls Dispose or Close (leaving the using statement scope in your case) then it will dispose the source stream as well. Calling fs.Dispose() in your case. So the file stream is dead … WebC# : Cannot access a closed Stream while creating a downloadable text file in ASP MVC 3To Access My Live Chat Page, On Google, Search for "hows tech develope...

WebDec 22, 2011 · CodeProject, 20 Bay Street, 11th Floor Toronto, Ontario, Canada M5J 2N8 +1 (416) 849-8900 WebJul 6, 2013 · private FileStreamResult Export () { string name = "filename.txt"; MemoryStream stream = new MemoryStream (); using (StreamWriter writer = new StreamWriter (stream)) { StringBuilder sb = new StringBuilder (); sb.Append ("A text..."); writer.WriteLine (sb.ToString ()); } return File (stream, "text/plain", name); } UPDATE …

WebJun 26, 2012 · The stream could have been closed outside of this code and this exception would still occur? Yes. For example - This can happen if you wrap a stream within another stream, and dispose of the "wrapper" stream. Many implementations dispose of the stream they are wrapping. WebJan 22, 2024 · Or you could just reopen the filestream again, or maybe return a File Instance from your method that you could reopen the stream with Now that you shared your full code, it seems to me that your Write call is disposing the FileStream or closing it, you can try reopen the filestream just after you do the Write () call. Share Improve this answer

WebApr 13, 2015 · You might be closing the stream before doing anything with it. What happens when you run this: using (fileStream = new FileStream (path, FileMode.Append, FileAccess.Write)) { fileWriter = new StreamWriter (fileStream); fileWriter.AutoFlush = …

/// Method that gets called by ManagedResource.WriteData() in project CodeAnalysis during code /// emitting to get the data for an embedded resource file. chuck hutton toyota on shelby driveWebJan 7, 2024 · I'm getting Cannot Access a closed file on some files when I try to upload them. I'm creating a small web app, when a user creates an account on the website, they are required to upload a file. Once they have uploaded the file, I should see it in MongoDB. The issue is some files are uploaded successfully while others create errors. chuck hylandWebClose the file: If you are the one who opened the file, you can close it to release the lock. Make sure that you call the Close method on the file object after you finish reading or writing it. using (var file = new FileStream("filename", FileMode.Open)) { // read or write the file here file.Close(); // release the lock } chuck hutton used cars memphisWebDec 6, 2016 · With the same exception for other members of FileStream. When I dig further into these exceptions, I see: base {System.InvalidOperationException} = {"Cannot access a closed file."} As the message. What does this mean? I'm assuming this is preventing me from reading from this file. Is there any way around this? Why would it work for XLS but … chuck hyneman insuranceWebThe same applies to all File functions that don't return a handle to the file you're working with: File.ReadAllText(), File.WriteAllText(), File.ReadAllLines(), File.WriteAllLines() and … design your own save the date online freeWebNov 1, 2011 · Im using Taglib to change some tags in memory, what Im trying to do is read a file using a stream, copy the stream to a memoryStream make some changes i.e. (file.Tag.Comment = "my New comments"), and then use the lastest stream for download. chuckia brown-tisdaleWebC# , Issue with writing HTTP content into FileStream, Cannot access a closed file 1 .NET Core API saving image upload asynchronously with ImageSharp, MemoryStream and FileStream design your own save the date