C# 控制台应用程序显示来自另一个正在运行的进程的剩余时间或百分比

Question

i have a c# console program.Im using .net 2.0. Im launching an exe from my console program. That exe shows progress bar on taskbar.

Here i want to read progress percentage from that exe and want to display (1% 2% 3% etc) on my console app program.

(i dont want to display whole output of that exe into my program. i also did test of setting following code but it shows all output of that exe i only want to display percentage )

Is this possible using .net 2.0?

im beginner in c#

i have following working code

        string fullName = "A.exe" ;
        Process p1 = new Process();
        p1.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
        p1.StartInfo.UseShellExecute = true;
        p1.StartInfo.FileName = fullName;
        p1.Start(); 
        p1.WaitForExit();

Answer 1

To read program's progress, you should redirect the standard output and define a method DataReceived that handles OutputDataReceived event of the specified Process instance. This method, for example, gets the percentage of the text, assuming it contains a single number (see GetPercent ), and updates the progress information as you see fit.

static class Program
{
    static void Main(string[] args)
    {
        using (Process proc = new Process
        {
            StartInfo = new ProcessStartInfo
            {
                FileName = "A.exe", // Type filename here.
                WindowStyle = ProcessWindowStyle.Hidden,
                CreateNoWindow = true,
                RedirectStandardError = true,
                RedirectStandardOutput = true,
                UseShellExecute = false
            }
        })
        {
            proc.OutputDataReceived += DataReceived;
            proc.Start();
            proc.WaitForExit();
        }
    }

    // Updates a progress value.
    static void DataReceived(object sender, DataReceivedEventArgs e)
    {
        // The e.Data property contains programs output string.
        // Esc-symbol \r means overwriting the current line.
        Console.Write("\rTotal " + GetPercent(e.Data) + " completed.");
    }

    // Gets the percentage from the output string. 
    static string GetPercent(string data)
    {
        // The regular expression that finds a number from a string.
        Regex regex = new Regex(@"([^\d]|^)\d{1,2}([^\d]|$)");
        Match match = regex.Match(data);
        return match.Value;
    }
}

This code should be modified for the specific output format of your program.