C# How do i convert System.Net.ConnectStream to a byte[] (array)

Question

im trying to convert a stream (System.Net.ConnectStream) to a byte array. Any thoughts/examples on how this can be done?

Just read it into a buffer (byte[]). Look at Stream.Read on MSDN. — Oded
– Oded, Commented Sep 28, 2012 at 19:17
@Oded, yes, but it's not a very easy way to copy the whole content of the stream (unless you know its length, which isn't always the case with ConnectStream) — Thomas Levesque
– Thomas Levesque, Commented Sep 28, 2012 at 19:19

Thomas Levesque · Accepted Answer · 2012-09-28 19:18:56Z

14

Stream sourceStream = ... // the ConnectStream
byte[] array;
using (var ms = new MemoryStream())
{
    sourceStream.CopyTo(ms);
    array = ms.ToArray();
}

answered Sep 28, 2012 at 19:18

Thomas Levesque

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2 Comments

Kirill Bestemyanov Over a year ago

In this case you use memory in 3 times more than your stream. It is not so good if your streams can take more memory than your pc have. In this case you need to use Stream.Read to read chunks of data from source stream and work with this chunks.

Scott Chamberlain Over a year ago

Note that Stream.CopyTo is only available in .NET 4.0 and up. See Kevin's answer for a pre 4.0 version.

Scott Chamberlain · Accepted Answer · 2012-09-28 20:35:17Z

4

Try this...

    private static readonly object _lock = new object();

    public static byte[] readFullStream(Stream st)
    {
        try
        {
            Monitor.Enter(_lock);
            byte[] buffer = new byte[65536];
            Int32 bytesRead;
            MemoryStream ms = new MemoryStream();
            bool finished = false;
            while (!finished)
            {
                bytesRead = st.Read(buffer.Value, 0, buffer.Length);
                if (bytesRead > 0)
                {
                    ms.Write(buffer.Value, 0, bytesRead);
                }
                else
                {
                    finished = true;
                }
            }
            return ms.ToArray();
        }
        finally
        {
            Monitor.Exit(_lock);
        }
    }

edited Sep 28, 2012 at 20:35

Scott Chamberlain

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answered Sep 28, 2012 at 20:25

Kevin

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2 Comments

Scott Chamberlain Over a year ago

Heres a tip, if you are using a rounded number buffer (like 64k in your example), you can replace 65536 with 64 << 10 where the left hand side is your number and on the right hand side 0 = Bytes, 10 = Kilobites, 20 = Megabytes, 30 = Gigabytes, ect... So a 2MB buffer would be 2 << 20

Scott Chamberlain Over a year ago

Also, why are you locking on _lock? if you are trying to get exclusive access to the stream you should be locking on something tied to the stream (or call Stream.Synchronized before it gets passed in). You are doing nothing in your code that would break if you converted did two different streams at the same time

Community · Accepted Answer · 2017-05-23 12:10:05Z

0

In one answer from Freeetje there is method writen named 'ReadToEnd'. Worked like a charm for me...

How do I get the filesize from the Microsoft.SharePoint.Client.File object?

edited May 23, 2017 at 12:10

CommunityBot

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answered Oct 2, 2014 at 16:53

Diomos

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