Response.outputstream.write vs Response.BinaryWrite

Question

We use the below code to show PDF files using Response.BinaryWrite. We are exploring new options as to optimize the user performance.

        Response.Clear();
        Response.ContentType = "application/pdf";

        if (Page.Request!=null && Page.Request.Browser!=null && 
            (!(Page.Request.Browser.Type.Contains("IE") || Page.Request.Browser.Type.Contains("InternetExplorer"))))
        {
            Response.AddHeader("Content-Length", buffer.Length.ToString());
        }

        Response.AddHeader("Content-Encoding", "deflate");
        if (Request.Browser.Browser == "IE" && Request.Browser.MajorVersion < 7)
            Response.AddHeader("Content-Disposition", "attachment; filename=document.pdf");            
        Response.OutputStream.Write(buffer, 0, buffer.Length);//Response.BinaryWrite(buffer);
        Response.End();
        Response.Flush();
        Response.Close();

I read that Response.outputstream.write is another option to render the PDF. Using Response.outputstream.write will have any added advantage ?

@mason their was no change in terms of the behavior. I could not tell the performance part. — ram dev
– ram dev, Commented Jun 4, 2018 at 18:04
If there was no performance change, then why would you change it in the name of optimizing user performance? — mason
– mason, Commented Jun 4, 2018 at 18:05
@mason Because he's an inexperienced dev here for guidance, encouragement, and advice. — TheSoftwareJedi
– TheSoftwareJedi, Commented Jun 4, 2018 at 18:07
@TheSoftwareJedi I didn't ask you. Have you heard of the Socratic method of teaching? The point is to ask questions that get them to critically think about their issue, rather than just asking someone to give them the answer. Often works better than just telling someone the answer. — mason
– mason, Commented Jun 4, 2018 at 18:10

TheSoftwareJedi · Accepted Answer · 2018-06-04 17:30:25Z

1

No, it will not have any advantage. The code for BinaryWrite simply calls Write on the OutputStream as you are already doing:

public void BinaryWrite(byte[] buffer)
{
  this.OutputStream.Write(buffer, 0, buffer.Length);
}

Using a tool such as DotPeek you can step right into compiled code and look at what it is doing. That's what I did in this case. DotPeek is free and available from JetBrains.

This can help you research these things yourself instead of having to guess, test, or ask.

answered Jun 4, 2018 at 17:30

TheSoftwareJedi

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5 Comments

ram dev Over a year ago

what are the other alternatives ?

mason Over a year ago

@ramdev Alternatives to what?

ram dev Over a year ago

Alternative to using OutputStream.Write

mason Over a year ago

@ramdev Why? Why do you need an alternative to that?

ram dev Over a year ago

@mason BinaryWrite or OutputStream.Write does solve my problem.I would like to know If there is a better to write binary data to Respons. If there is any . Appreciate your time.

sglugove · Accepted Answer · 2018-12-03 01:05:02Z

0

If you're experiencing rendering delays, you could implement an async method and use the following code:

var result = Response.OutputStream.BeginWrite(buffer, 0, BufferedStream.Length, null, null);
Response.OutputStream.EndWrite(result);

answered Dec 3, 2018 at 1:05

sglugove

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