每日一学：如何查看进程

Question

//using System.Diagnostics;
Process[] localAll = Process.GetProcesses();
for (int i = 0; i < localAll.Length; i++)
{
    Console.WriteLine(localAll[i].ProcessName);
}

Answer 1

using System; 
using System.Collections.Generic; 
using System.Text; 
using System.IO; 
using System.Security.Cryptography; 
using System.Management; 
using Microsoft.Win32; 
using System.Data; namespace ConsoleApplication1
{
    public static class EncryptDecrypt
    {
        private static string txtKey = "PatrickpanP=";
        private static string txtIV = "LiuJineagel=";
        private static SymmetricAlgorithm mCSP;        public static void keyIv()
        {
            mCSP = new DESCryptoServiceProvider();
            mCSP.Key = Convert.FromBase64String(txtKey);
            mCSP.IV = Convert.FromBase64String(txtIV);
        }        public static string StrEncrypt(string str)
        {
            str = EncryptString(str);
            keyIv();
            ICryptoTransform ct;
            MemoryStream ms;
            CryptoStream cs;
            byte[] byt;            ct = mCSP.CreateEncryptor(mCSP.Key, mCSP.IV);
            byt = Encoding.UTF8.GetBytes(str);
            ms = new MemoryStream();
            cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
            cs.Write(byt, 0, byt.Length);
            cs.FlushFinalBlock();
            cs.Close();            return Convert.ToBase64String(ms.ToArray());
        }
        public static string StrDecrypt(string str)
        {
            keyIv();
            ICryptoTransform ct;
            MemoryStream ms;
            CryptoStream cs;
            byte[] byt;            ct = mCSP.CreateDecryptor(mCSP.Key, mCSP.IV);
            byt = Convert.FromBase64String(str);            ms = new MemoryStream();
            cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
            cs.Write(byt, 0, byt.Length);
            cs.FlushFinalBlock();            cs.Close();            string r = Encoding.UTF8.GetString(ms.ToArray());            r = DecryptString(r);            return r;
        }        public static string MD5Enc(string passwordString)
        {
            string encStr = "";
            byte[] data = System.Text.Encoding.Default.GetBytes(passwordString);
            MD5 md5 = new MD5CryptoServiceProvider();
            byte[] result = md5.ComputeHash(data);
            md5.Clear();
            encStr = Convert.ToBase64String(result);
            return encStr;
        }        public static string SHA1Enc(string passwordString)
        {
            string encStr = "";
            byte[] data = System.Text.Encoding.Default.GetBytes(passwordString);
            SHA1 sha1 = new SHA1CryptoServiceProvider();
            byte[] result = sha1.ComputeHash(data);
            sha1.Clear();
            encStr = Convert.ToBase64String(result);
            return encStr;
        }        public static string EncryptString(string s)
        {
            char[] c = s.ToCharArray();
            for (int i = 0; i < c.Length; i++)
            {
                c[i] = (char)(c[i] + i);
            }
            Array.Reverse(c);
            string r = new string(c);
            return r;
        }        public static string DecryptString(string s)
        {
            char[] c = s.ToCharArray();
            Array.Reverse(c);
            for (int i = 0; i < c.Length; i++)
            {
                c[i] = (char)(c[i] - i);
            }
            string r = new string(c);
            return r;
        }
    } 
}

Answer 2

 //using System.Drawing;平滑画线
 private void button1_Click(object sender, EventArgs e)
  {
   Graphics g = this.CreateGraphics();   g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;   g.DrawEllipse(Pens.Black,10,10,100,50);
  }