CODEWITHSUNDEEP
c#streamreader
Lee Armstrong
Lee Armstrong

Reputation: 11450

Get remnants from StreamReader

I have a stream reader that I am using to read lines from a stream. This works well however I would like to be able to get the last line which will never end with a line break so the readLine() will not capture it.

I will store this is a global variable and append to the stream before the next run.

Is this possible at all?

void readHandler(IAsyncResult result)
{
    tcpClient = (TcpClient)result.AsyncState;
    StreamReader reader ;
    string line;
    using (reader = new StreamReader(stream))
    {
        while((line = reader.ReadLine()) != null){
            System.Diagnostics.Debug.Write(line);
            System.Diagnostics.Debug.Write("\n\n");
        }

    }
    getData();
}

Upvotes: 0

Views: 123

Answers (2)

Aaronaught
Aaronaught

Reputation: 122674

Unless you really need to do this line by line, you could do away with this entire loop and just use the StreamReader.ReadToEnd method. That will give you everything that's currently in the buffer.

Upvotes: 0

Jon Skeet
Jon Skeet

Reputation: 1503439

ReadLine does capture the final line of the stream even if it doesn't have a line-break after it. For example:

using System;
using System.IO;

class Test
{
    static void Main()
    {
        string text = "line1\r\nline2";

        using (TextReader reader = new StringReader(text))
        {
            string line;
            while((line = reader.ReadLine()) != null)
            {
                Console.WriteLine(line);
            }
        }
    }
}

Prints:

line1
line2

ReadLine() will only return null when it's reached the end of the stream and returned all of the data.

Upvotes: 1

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