Cannot access a closed file filestream c#

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August undefined, 2024

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 … 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 …

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

WebTwo thoughts: Regarding FileShare statement that additional permissions might still be needed - that's likely in reference tha while your program says it can handle someone … 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 … impractical jokers bathroom megaphone

IFormFile.OpenReadStream C# (CSharp) Code Examples

WebJul 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 … 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... WebNov 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. lithea marble

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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 … 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 … impractical jokers beef bottomsWebOct 16, 2024 · You are trying to read/write to a stream that is already closed / disposed. private FileResult createZipFromXmlImport (ImportBase import, string fileName) { var … impractical jokers basketball punishment

"WebDec 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 … " - Cannot access a closed file filestream c#

Cannot access a closed file filestream c#

c# - Why does ASP.NET MVC Controller FileStreamResult error on closed ...

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. WebMay 31, 2015 · The problem is, that when the code reaches the R.Write (Nrows);, it throws the ObjectDisposedException and says that it cannot access a closed file. What is causing the file to be closed at this point? And how can I prevent the file from closing? The same problem occurs while reading as reading uses the same pattern as writing. c# exception

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WebMar 5, 2024 · Apparently ASP.Net buffers the first chunk of the input stream, then treats the stream as closed. This can happen if you set MaxRequestLength (say, 1536) but let RequestLengthDiskThreshold default. This apparently trips over some internal code, which makes it a Microsoft bug. WebClose 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 }

WebJan 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. WebC# , 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

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); }

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.

WebApr 22, 2024 · In my C# api I am returning a pdf file in a FileStreamResult, works great. Generally I wrap streams in using, however this code fails with Cannot access a closed Stream. using (MemoryStream stream = new MemoryStream (byteArray)) { fileStreamResult = new FileStreamResult (stream, "application/pdf"); } return (ActionResult)fileStreamResult; impractical jokers assaultedWebJun 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. lithea inalcoWebMar 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 impractical jokers belly dancerWebDec 22, 2011 · CodeProject, 20 Bay Street, 11th Floor Toronto, Ontario, Canada M5J 2N8 +1 (416) 849-8900 lit healthWebJun 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 … impractical jokers blanketWebJan 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 impractical jokers baggage shame full episodeWebThe 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 … impractical jokers below the belt