Cannot access a closed stream memorystream c#

Author: lbqu

August undefined, 2024

WebThis is because the StreamReader closes of underlying stream automatized when be disposed about. The using statement does this automatically. However, the StreamWriter … 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 …

c# - Cannot write to new MemoryStream - Stream closed - Stack Overflow

WebMar 17, 2024 · Write it as: var _memStream = new MemoryStream (file.Contents); zipArchive.AddEntry (file.Filename, _memStream, true); It should use this overload. The true is so that it closes the Stream when not used. Probably it will auto-discover the length (I see that it is an optional value with 0 as default) deschutes onsite clinic bend

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

WebDec 2, 2015 · Cannot access a closed Stream. Here is my code: //Create a byte array that will eventually hold our final PDF Byte [] bytes; List myTables = getTables (); TableObject currentTable = new TableObject (); //Boilerplate iTextSharp setup here //Create a stream that we can write to, in this case a MemoryStream using (MemoryStream ms ... WebThis is because the StreamReader closes of underlying stream automatized when be disposed about. The using statement does this automatically. However, the StreamWriter you're using is static trying to work on to stream (also, the using account for the writer is now test to dispose for the StreamWriter, which remains then trying till finish the ... WebJul 6, 2013 · Here is my code: 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); } deschutes non alcoholic beer

Attach a file from MemoryStream to a MailMessage in C#

c# - getting an error like Cannot access a closed Stream while …

WebDec 31, 2016 · If it was created from a Stream it will access that original stream during the save operation. So the exception is not due to your memorystream you supplied in the save method, it is the original stream that is the culprit. Make sure you keep that stream available until all operations you want to do on the Workbook are completed. Share Follow WebDec 16, 2015 · If not, you may be able to work around the problem with the non-expandable memory stream by not creating the memory stream from a fixed array. Instead of new MemoryStream (fileData) you can use: using (var zipStream = new MemoryStream ()) { zipStream.Write (fileData, 0, fileData.Length); zipStream.Position = 0; // continue here } … deschutes insurance bend oregonWebDec 8, 2024 · 1 Answer Sorted by: 2 seems you are disposing the StreamWriter sw, which in turn will dispose the memory stream passed to it try using this public static Stream GenerateStreamFromString (string s) { var ms = new MemoryStream (Encoding.Default.GetBytes (s)); return ms; } Share Improve this answer Follow … deschutes library programs

"WebAfter serialization, you can retrieve the serialized JSON from the memory stream and do something with it. Note that you can modify the Formatting property to change the formatting of the JSON text as needed. More C# Questions. Register IAuthenticationManager with Simple Injector in C#; Why DateTime.Now needs to be thread-safe in C#? " - Cannot access a closed stream memorystream c#

Cannot access a closed stream memorystream c#

Why am I getting "Cannot access a closed Stream" here?

WebApr 20, 2011 · First try to load the document from MemoryStream then close XmlTextWriter Do it like this: XmlDocument X= new XmlDocument () x.Load (MemoryStream) XmlTextWriter .Close () Posted 20-Apr-11 23:01pm Ankit Rajput Updated 20-Apr-11 23:02pm v2 Comments zsh64 21-Apr-11 5:35am If i do it Gives the following message … WebDec 28, 2024 · When I debug the code it runs fine, but when I run it on the Test server, I get the following error: System.ObjectDisposedException: Cannot access a closed Stream. at System.IO.__Error.StreamIsClosed () at System.IO.MemoryStream.Write (Byte [] buffer, Int32 offset, Int32 count)

Did you know?

WebJun 26, 2012 · 7. So I will make my comment an answer: Yes, a stream could just as well be closed from outside your code, so make sure you check for a System.ObjectDisposedException. There are several occasions this could happen: imagine for example a stream associated with a network connection and the connection is … WebOne simple approach is to get the byte array out of the closed MemoryStream and create another one: pdf.CreatePDF(ms) ms = new MemoryStream(ms.ToArray()) Dim email As New EmailService email.Send(ms) Note that it's fine to call MemoryStream.ToArray on a closed / disposed instance of MemoryStream. It's even documented: Note

WebThe StreamWriter and underlying stream should not be disposed until after the message has been sent (to avoid ObjectDisposedException: Cannot access a closed Stream). Since I couldn't find confirmation of this anywhere, I tested if disposing of the MailMessage and/or the Attachment object would dispose of the stream loaded into them as I ... WebYou're creating the MemoryStream in a using block. When the block goes out of scope the Dispose method is being called. Just remove the using so that it isn't closed:

WebFeb 25, 2010 · The problem is that the stream is closed (via Dispose ()) at the end of the using block. You retain a reference to the closed stream. Instead, save the contents of the stream to your cache: _cache.Add (someId, stream.ToArray ()); When you call the PngBitmapDecoder constructor, you'll have to create a new MemoryStream to read from … WebMar 7, 2014 · Exception Details: System.ObjectDisposedException: Cannot access a closed Stream. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: …

WebOne simple approach is to get the byte array out of the closed MemoryStream and create another one: pdf.CreatePDF(ms) ms = new MemoryStream(ms.ToArray()) Dim email As …

WebApr 12, 2024 · C# : Cannot access a closed Stream of a memoryStream, how to reopen?To Access My Live Chat Page, On Google, Search for "hows tech developer connect"As promis... chrysler llc stock priceWebAug 4, 2024 · So I am getting a Stream back from an http call and if I just assign it to my return variable then I get an exception Cannot access a closed Stream in the calling function. Is this because of the Using? ... C# Cannot access a closed stream while copying GZipStream to MemoryStream. chrysler lineup 2022WebMay 19, 2014 · When client.Send tries to send it will obviously read Attachment which points to a MemoryStream which has be already closed by StreamWriter. You can verify this by inspecting ms.CanRead It will return false. Accessing closed stream will throw exception, that's what you're experiencing. deschutes park olympia waWebDec 30, 2024 · Add a comment 1 Answer Sorted by: 2 You're returning mem from inside your using at which point it is disposed. The "mem" variable inside this File () goes out of scope and is disposed as soon as you return it. return File (mem, "application/vnd.openxmlformats-officedocument.wordprocessingml.document", … deschutes investment club of olympiaWebMar 24, 2024 · create a new xlsx and write to memory stream · Issue #171 · dotnetcore/NPOI · GitHub. Notifications. Fork. deschutes fresh squeezed old fashionedWebOct 5, 2024 · Cannot access a closed stream. Here's the code: first method: Here it opens a file with File.Open method and then creates a memorystream object and it copies FileStream to MemoryStream. then sets Position to 0 (i set position to 0, because i was that in a solution, but not helping tho). Then it creates an object of class DocxConvert and call ... chrysler litchfield mnWebJun 26, 2012 · One simple approach is to get the byte array out of the closed MemoryStream and create another one: pdf.CreatePDF (ms) ms = new MemoryStream (ms.ToArray ()) Dim email As New EmailService email.Send (ms) Note that it's fine to call MemoryStream.ToArray on a closed / disposed instance of MemoryStream. It's even … deschutes obsidian stout beer advocate