c# stop a streamreader after a few seconds. Is this possible?

I have web request and i read information with streamreader. I want to stop after this streamreader after 15 seconds later. Because sometimes reading process takes more time but sometimes it goes well. If reading process takes time m开发者_Go百科ore then 15 seconds how can i stop it? I am open all ideas.

Since you say "web request", I assume that the stream reader wraps a System.IO.Stream which you obtained from a HttpWebRequest instance by calling httpWebRequest.GetResponse().GetResponseStream().

If that's the case, you should take a look at HttpWebRequest.ReadWriteTimeout.

Use a System.Threading.Timer and set an on tick event for 15 seconds. It's not the cleanest but it would work. or maybe a stopwatch

--stopwatch option

        Stopwatch sw = new Stopwatch();
        sw.Start();
        while (raeder.Read() && sw.ElapsedMilliseconds < 15000)
        {

        }

--Timer option

        Timer t = new Timer();
        t.Interval = 15000;
        t.Elapsed += new ElapsedEventHandler(t_Elapsed);
        t.Start();
        read = true;
        while (raeder.Read() && read)
        {

        }
    }

    private bool read;
    void t_Elapsed(object sender, ElapsedEventArgs e)
    {
        read = false;
    }

You will have to run the task in another thread, and monitor from your main thread whether it's running longer than 15 seconds:

string result;
Action asyncAction = () =>
{
    //do stuff
    Thread.Sleep(10000); // some long running operation
    result = "I'm finished"; // put the result there
};

// have some var that holds the value
bool done = false;
// invoke the action on another thread, and when done: set done to true
asyncAction.BeginInvoke((res)=>done=true, null);

int msProceeded = 0;
while(!done)
{
    Thread.Sleep(100); // do nothing
    msProceeded += 100;

    if (msProceeded > 5000) break; // when we proceed 5 secs break out of this loop
}

// done holds the status, and result holds the result
if(!done)
{
    //aborted
}
else
{
    //finished
    Console.WriteLine(result); // prints I'm finished, if it's executed fast enough
}