c# .NET Fast (realtime) webresponse reading

Question

I got code, that sending GET request and recieves answer in stream. I read stream with streamreader to end. Here is code:

HttpWebRequest requestGet = (HttpWebRequest)WebRequest.Create(url);
requestGet.Method = "GET";
requestGet.Timeout = 5000;
HttpWebResponse responseGet = (HttpWebResponse)requestGet.GetResponse();
StreamReader reader = new StreamReader(responseGet.GetResponseStream());
StringBuilder output = new StringBuilder();
output.Append(reader.ReadToEnd());
responseGet.Close();

But i dont like that program is waiting until all data recieved before starting working with response. It would be great if i can do it like this(pseudocode):

//here sending GET request
do
{
response.append(streamPart recieved);
//here work with response
} while (stream not ended)

I tried streamReader.Read(char[], int32_1, int32_2), but i cant specify int32_2, becouse i dont know how many symbols i recieved. And if i use ReadToEnd - it waits for all response to load.

Answer 1

Read takes a char[] buffer and returns the number of characters read from the stream. Here's an example of how to read the response in chunks:

    public static void Main(string[] args)
    {
        var req = WebRequest.Create("http://www.google.com");
        req.Method = "GET";
        req.Timeout = 5000;
        using (var response = req.GetResponse())
        using (var reader = new StreamReader(response.GetResponseStream()))
        {
            char[] buffer = new char[1024];
            int read = 0;
            int i = 0;
            do
            {
                read = reader.Read(buffer, 0, buffer.Length);
                Console.WriteLine("{0}: Read {1} bytes", i++, read);
                Console.WriteLine("'{0}'", new String(buffer, 0, read));
                Console.WriteLine();
            } while(!reader.EndOfStream);
        }
    }

I didn't see any extraneous white space or repeated data.