calculating the percentage of completion of a process

Question

can anybody help me in calculating the completion of a

system.diagnostics.process.start

Process runprocess = new Process();

like for example I have this code :-

                runprocess.StartInfo.FileName = "cmd.exe";//download the nmap application first to run nmap ..
                runprocess.StartInfo.Arguments = "/c nmap -T4 -A -v -oX - 192.168.1.1-10 > file.xml";
                runprocess.StartInfo.UseShellExecute = false;
                runprocess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;// hiding the console
                runprocess.StartInfo.CreateNoWindow = true;
                runprocess.Start();

now I want to calculate process progress ..

while(!runprocess.HasExited)
{
          //code to calculate the completion of the process and saving it to a int variable ..
}

please help me out with this I have searched everywhere but didn't get anything..

Vulpes · Answer

You can only do that by first running the process a reasonable number of times and calculating the average time it takes. Remember that the operating system has no idea (and no way of telling) how long a process takes to run and the Process class therefore has no data on this.

GIFTED Vish · Answer

no no .. I just want to know that:- How to estimate process completion time ..

Vulpes · Answer

Unless your process exposes something to indicate its percentage progress to date, the only thing you can do externally is to: 1. Estimate how long the process takes on average to run. 2. Start a StopWatch object when the process starts so that on each iteration of the while loop you can get the current elapsed time and hence deduce the estimated percentage completed to date. If this exceeds 100%, record 99% say. 3. Stop the StopWatch when the process finally exits.