private void button_Click(object sender, System.EventArgs e)
{
    // 将主窗体的控件值作为参数传递到子窗体  
    Form2 formChild = new Form2(this.textBoxFrm1.Text, this.checkBoxFrm1.Checked);
    formChild.ShowDialog();
}

HtmlDocument doc = webBrowser1.Document;
foreach (HtmlElement em in doc.All) 
{
	string str = em.Id;
	if (str == "pwdInput")  
	{
		em.SetAttribute("value", "abc"); break; 
			
	}
} 

private MouseButtons Button;
private long Ticks;
private long TicksDelay = 100000L;

private void btn_Click(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left)
    {
        if (DateTime.Now.Ticks - Ticks < TicksDelay && Button == MouseButtons.Right)
        {
            //左右键"同时"（先左后右）     

        }
        else
        {
            //左键

        }
    }
    else if (e.Button == MouseButtons.Right)
    {
        if (DateTime.Now.Ticks - Ticks < TicksDelay && Button == MouseButtons.Left)
        {
            //左右键"同时"（先右后左）     

        }
        else
        {
            //右键

        }
    }
    Button = e.Button;
    Ticks = DateTime.Now.Ticks;

}

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace list
{
	class Program
	{
		static void Main(string[] args)
		{
			LinkedList<int> LinkList;
			List<LinkedListNode<int>> Lnode;
			LinkList = new LinkedList<int>();
			Lnode = new List<LinkedListNode<int>>();
			Lnode.Add(new LinkedListNode<int>(3));
			Lnode.Add(new LinkedListNode<int>(1));
			Lnode.Add(new LinkedListNode<int>(2));
			LinkList.AddFirst(Lnode[2]);
			LinkList.AddBefore(Lnode[2],Lnode[1]);
			LinkList.AddAfter(Lnode[2],Lnode[0]);

			foreach (int doc in LinkList)
			{
				Console.WriteLine(doc);
			}

		}
	}
}

using System;
using System.Collections;
using System.Linq;
using System.Text;

namespace stack
{
	class Program
	{
		static void Main(string[] args)
		{
			Stack st = new Stack();
			st.Push('A');
			st.Push('B');
			Console.WriteLine(st.Pop());
			st.Push('C');
			Console.WriteLine(st.Pop());
			Console.WriteLine(st.Count);
			Console.WriteLine(st.Pop()); 
			st.Push('D');
			Console.WriteLine(st.Pop());
		}
	}
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.IO;
using System.Windows.Forms;


namespace MediaPlayer
{
	public partial class Form6 : Form
	{
		private AxWMPLib.AxWindowsMediaPlayer axWindowsMediaPlayer2 = new AxWMPLib.AxWindowsMediaPlayer();
		PictureBox pictureBox2 = new PictureBox();
		private int t = 0;
		private int count = 0;
		private string filename;
		private string[] info = new string[100];



		public Form6(ref AxWMPLib.AxWindowsMediaPlayer axWindowsMediaPlayer1, ref PictureBox pictureBox1)
		{
			InitializeComponent();
			this.Text = "视频分析";
			timer1.Enabled = false;
			axWindowsMediaPlayer2 = axWindowsMediaPlayer1;
			pictureBox2 = pictureBox1;
		}


		private void timer1_Tick(object sender, EventArgs e)
		{
			t++;
			label2.Text = t.ToString();


			if (!info[count].Equals("end#"))
			{
				if (t == Int32.Parse(info[count].Substring(0, info[count].IndexOf(']'))))
				{
					richTextBox1.Text = info[count].Substring(info[count].IndexOf(']') + 1);

					count++;
				}
			}


		}

		private void button1_Click(object sender, EventArgs e)
		{
			openFileDialog1.ShowDialog();
			filename = openFileDialog1.FileName;
			try
			{
				// Create an instance of StreamReader to read from a file.  
				// The using statement also closes the StreamReader.  
				using (StreamReader sr = new StreamReader(filename))
				{
					String line;
					int i = 0;
					// Read and display lines from the file until the end of   
					// the file is reached.  
					while ((line = sr.ReadLine()) != null)
					{
						info[i] = line;
						i++;
					}
					sr.Close();
				}
			}
			catch (Exception a)
			{
				// Let the user know what went wrong.  
				MessageBox.Show("读取错误");


				MessageBox.Show(a.Message);
			}
		}

		private void openFileDialog2_FileOk(object sender, CancelEventArgs e)
		{
			axWindowsMediaPlayer2.URL = openFileDialog2.FileName;
			pictureBox2.Visible = false;
			timer1.Enabled = true;
		}


		private void button2_Click(object sender, EventArgs e)
		{
			openFileDialog2.ShowDialog();
		}

	}
}

using  System.Diagnostics;   
ProcessStartInfo  Info=new  ProcessStartInfo();   
Info.FileName  =  "inetcpl.cpl ";   
Process.Start(Info);