Time Taken to process a request in asp.net using C#

Question

I want to calculate the time taken by the system for performing a particular operation in asp.net using C#. When a user clicks on a button to get any result, i have to show the result as well as the time taken for them to get the result. Anyone please tell the code which i have to give to display the time taken.

Answer 1

In case you want to measure how much time a certain operation takes then you can use a StopWatch object. Example on the usage below:

class Program
{
    static void Main()
    {
    // Create new stopwatch
    Stopwatch stopwatch = new Stopwatch();

    // Begin timing
    stopwatch.Start();

    // Do something
    for (int i = 0; i < 1000; i++)
    {
        Thread.Sleep(1);
    }

    // Stop timing
    stopwatch.Stop();

    // Write result
    Console.WriteLine("Time elapsed: {0}",
        stopwatch.Elapsed);
    }
}

So what you need to do in your scenario is to start a StopWatch when starting the execution of your Action/Method and stop it before returning a view/ finishing the execution. You can then use the stopWatch.Elapsed value to display it to the user.

Answer 2

The original poster specified ASP.Net. The easiest way to do this in ASP.Net is probably to inject something like this into your global.asax:

private static ILog log = log4net.LogManager.GetLogger( typeof(Global) ) ;

void Application_BeginRequest( object sender , EventArgs e )
{
  Stopwatch timer = new Stopwatch();
  timer.Start();
  Request.RequestContext.HttpContext.Items["timer"] = timer ;
  return ;
}

void Application_EndRequest( object sender , EventArgs e )
{
  Stopwatch timer = (Stopwatch) this.Request.RequestContext.HttpContext.Items["timer"] ;
  timer.Stop() ;
  log.InfoFormat( "HttpVerb={0}, URL={1}, elapsed time={2}" ,
    this.Request.RequestType ,
    this.Request.Url ,
    timer
    ) ;
  return ;
}

If you want to do this on a page-specific basis, you'll need to do something similar, hooking the Page.PreInit and Page.Unload events respectively.

And you pretty much need to use the HttpContext to keep the timer about for the duration of the request: if you try to use a static variable, you'll have your classic race condition.