Cannot access a closed file filestream c#
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. 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.
Cannot access a closed file filestream c#
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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 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 …
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 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 …
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 … 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 …
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.
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 c# public list stringWebAug 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 … distance matoury cayenneWebJun 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. distance mcminnville tn to memphis tnWebJul 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 … distance mba in chandigarh universitydistance mccook ne to jewell ksWebOct 16, 2024 · You are trying to read/write to a stream that is already closed / disposed. private FileResult createZipFromXmlImport (ImportBase import, string fileName) { var … distance mcallen to brownsvilleWebAug 17, 2024 · I looked to see where the stream is being closed and its at the closing tag for the using, so i tried moving the return above the tag but this did not work either C#: private MemoryStream BuildRootZip() { MemoryStream ReturnMemoryStream = new MemoryStream(); using (ReturnMemoryStream) { } } distance mean indicator tradingview