一个简单的进程察看器

using System;
using System.Diagnostics;

namespace ProcessManager
{
    /**//// <summary>
    /// Summary description for Class1.
    /// </summary>
    class MainEntry
    {
        /**//// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main(string[] args)
        {
            if(args.Length<1)ListProcesses();
            else if(args[0].Length>0)ListProcess(args[0]);
        }

        private static void ListProcesses()
        {
            string output = "";
            int limit = 36;
            Console.WriteLine("PID".PadRight(6)+"Name".PadRight(16)+"Memory".PadLeft(10)+"VM size".PadLeft(10)+"Threads count".PadLeft(20));
            Console.WriteLine("-".PadRight(limit+34,'-'));
            foreach(Process proc in Process.GetProcesses())
            {
                
                string pid = proc.Id.ToString();
                string pname = proc.ProcessName;
                string pcount = proc.Threads.Count.ToString();
                string pmemsize = (proc.PeakWorkingSet/1024).ToString()+"K";
                string pvmsize = (proc.PeakPagedMemorySize/1024).ToString()+"K";
                
                output = String.Format("{0}{1}{2}{3}{4}",pid.PadRight(6),pname.PadRight(16),pmemsize.PadLeft(10),pvmsize.PadLeft(10),pcount.PadLeft(10));
                Console.WriteLine(output);
            }
        }         

        private static void ListProcess(string processid)
        {
            int pid = -1;
            try
            {
                pid = Convert.ToInt32(processid);
            }
            catch
            {

            }

            if(-1 == pid)
            {
                Console.WriteLine("Invalid processID!");
                return;
            }

            string output = "";
            Process proc = null;
            try
            {
                proc = Process.GetProcessById(pid);
            }
            catch
            {

            }
            if(null == proc)
            {
                Console.WriteLine("Invalid processID!");
                return;
            }

            Console.WriteLine("PID:"+proc.Id.ToString());
            
            Console.WriteLine("-".PadRight(50,'-'));
//            Console.WriteLine("Main Module");
//            Console.WriteLine("-".PadRight(50,'-'));
            Console.WriteLine("Module Name".PadRight(50)+"Memory Size");
            WriteModuleInformation(proc.MainModule);

            Console.WriteLine("-".PadRight(50,'-'));
//            Console.WriteLine("All Modules");
//            Console.WriteLine("-".PadRight(50,'-'));
            Console.WriteLine("Module Name".PadRight(50)+"Memory Size");
            foreach(ProcessModule pm in proc.Modules)WriteModuleInformation(pm);
            
            Console.WriteLine("-".PadRight(50,'-'));
            Console.WriteLine("Thread List:");
            Console.WriteLine("-".PadRight(50,'-'));
            Console.WriteLine("ID".PadRight(6)+"Thread State".PadRight(20)+"Total Processor Time");
            Console.WriteLine("-".PadRight(50,'-'));
            foreach(ProcessThread pt in proc.Threads)
            {
                output = String.Format("{0}{1}{2}",pt.Id.ToString().PadRight(6),pt.ThreadState.ToString().PadRight(20),pt.TotalProcessorTime);
                Console.WriteLine(output);
            }
        }

        private static void WriteModuleInformation(ProcessModule pm)
        {
            Console.WriteLine(String.Format("{0}{1}",pm.ModuleName.PadRight(50),(pm.ModuleMemorySize/1024).ToString().PadLeft(10)+"K"));
        }
    }
}