Create a temporary file from stream object in c#

c# stream idisposable using
Yair Nevet picture Yair Nevet · Oct 23, 2011 · Viewed 26.5k times · Source

Given a stream object which contains an xlsx file, I want to save it as a temporary file and delete it when not using the file anymore.

I thought of creating a class that implementing IDisposable and using it with the using code block in order to delete the temp file at the end.

Any idea of how to save the stream to a temp file and delete it on the end of use?

Thanks

Answer

Darin Dimitrov picture Darin Dimitrov · Oct 23, 2011

You could use the TempFileCollection class:

using (var tempFiles = new TempFileCollection())
{
    string file = tempFiles.AddExtension("xlsx");
    // do something with the file here 
}

What's nice about this is that even if an exception is thrown the temporary file is guaranteed to be removed thanks to the using block. By default this will generate the file into the temporary folder configured on the system but you could also specify a custom folder when invoking the TempFileCollection constructor.

Related questions

How to return a Stream from a method, knowing it should be disposed?

I have a method that takes FileStream as input. This method is running inside a for loop. private void UploadFile(FileStream fileStream) { var stream = GetFileStream(); // do things with stream } I have another method which creates and returns the FileStream: private …

Read More
Should I call Close() or Dispose() for stream objects?

Classes such as Stream, StreamReader, StreamWriter etc implements IDisposable interface. That means, we can call Dispose() method on objects of these classes. They've also defined a public method called Close(). Now that confuses me, as to what should I call …

Read More
When or if to Dispose HttpResponseMessage when calling ReadAsStreamAsync?

I am using the System.Net.Http.HttpClient to do some client-side HTTP communication. I've got all of the HTTP in one spot, abstracted away from the rest of the code. In one instance I want to read the response …

Read More