form1.cs

Csharp网络应用案例导航 Csharp网络应用案例导航

namespace HTMLSourceViewer 
{ 
	using System; 
	using System.Net; 
	using System.Text; 
	using System.IO; 
	using System.Windows.Forms; 
	public class GetWebPageSource 
	{ 
		public GetWebPageSource() { } 
		public GetWebPageSource(string webAddress) 
		{ 
			this.webAddress = webAddress; 
		} 
		public string GetSource() 
		{ 
			StringBuilder strSource = new StringBuilder(""); 
			try 
			{ 
				WebRequest WReq = WebRequest.Create(this.webAddress); 
				WebResponse WResp = WReq.GetResponse(); 
				// get the stream of data 
				StreamReader sr = new StreamReader(WResp.GetResponseStream(), Encoding.ASCII); 
				string strTemp = ""; 
				while ((strTemp = sr.ReadLine()) != null) 
				{ 
					strSource.Append(strTemp + "\r\n"); 
				} 
				sr.Close(); 
			} 
			catch (WebException WebExcp) 
			{ 
				MessageBox.Show(WebExcp.Message, "Error", MessageBoxButtons.OK); 
			} 
			return strSource.ToString(); 
		} 
  
		// Accessor method 
		public void setWebAddress(string strNewAddress) 
		{ 
			this.webAddress = strNewAddress; 
		} 
		// private variables 
		private string webAddress; 
	} 
}

namespace HTMLSourceViewer
{
	using System;
  
	using System.Drawing;

	using System.Collections;
  
	using System.ComponentModel;
  
	using System.Windows.Forms;
  
	using System.Net;
  
	using System.Net.Sockets;
  
	using System.Runtime.Remoting;

	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox textBox2;
		private const string HTTP = "http://"; // scheme identifier
		private string strSource = null;

		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.label1 = new System.Windows.Forms.Label();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.label2 = new System.Windows.Forms.Label();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.BackColor = System.Drawing.Color.LightGoldenrodYellow;
			this.label1.ForeColor = System.Drawing.SystemColors.ActiveCaption;
			this.label1.Location = new System.Drawing.Point(16, 24);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(88, 24);
			this.label1.TabIndex = 0;
			this.label1.Text = "网页地址：";
			// 
			// textBox1
			// 
			this.textBox1.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right);
			this.textBox1.BackColor = System.Drawing.Color.LightGoldenrodYellow;
			this.textBox1.ForeColor = System.Drawing.Color.Brown;
			this.textBox1.Location = new System.Drawing.Point(112, 24);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(408, 25);
			this.textBox1.TabIndex = 1;
			this.textBox1.Text = "http://www.yahoo.com";
			this.textBox1.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBox1_KeyPress);
			// 
			// button1
			// 
			this.button1.Anchor = (System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right);
			this.button1.BackColor = System.Drawing.Color.LightGoldenrodYellow;
			this.button1.ForeColor = System.Drawing.Color.Brown;
			this.button1.Location = new System.Drawing.Point(528, 24);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(48, 32);
			this.button1.TabIndex = 2;
			this.button1.Text = "源码";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Anchor = (System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right);
			this.button2.BackColor = System.Drawing.Color.LightGoldenrodYellow;
			this.button2.ForeColor = System.Drawing.Color.Brown;
			this.button2.Location = new System.Drawing.Point(584, 24);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(48, 32);
			this.button2.TabIndex = 3;
			this.button2.Text = "退出";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// label2
			// 
			this.label2.BackColor = System.Drawing.Color.LightGoldenrodYellow;
			this.label2.ForeColor = System.Drawing.SystemColors.ActiveCaption;
			this.label2.Location = new System.Drawing.Point(16, 56);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(88, 24);
			this.label2.TabIndex = 4;
			this.label2.Text = "源代码：";
			// 
			// textBox2
			// 
			this.textBox2.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
				| System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right);
			this.textBox2.BackColor = System.Drawing.Color.LightGoldenrodYellow;
			this.textBox2.ForeColor = System.Drawing.Color.Brown;
			this.textBox2.Location = new System.Drawing.Point(16, 88);
			this.textBox2.Multiline = true;
			this.textBox2.Name = "textBox2";
			this.textBox2.ScrollBars = System.Windows.Forms.ScrollBars.Both;
			this.textBox2.Size = new System.Drawing.Size(616, 368);
			this.textBox2.TabIndex = 5;
			this.textBox2.Text = "HTML Source Code";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(8, 18);
			this.BackColor = System.Drawing.Color.Goldenrod;
			this.ClientSize = new System.Drawing.Size(648, 463);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.textBox2,
																		  this.label2,
																		  this.button2,
																		  this.button1,
																		  this.textBox1,
																		  this.label1});
			this.Name = "Form1";
			this.Text = "网页源码浏览程序";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			Application.Exit();
		}

		private void textBox1_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
		{
			char chr = e.KeyChar;
			//13 = Enter key
			if (chr == 13) 
			{
				GetPageSource();
			}
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			GetPageSource();
		}

		public void GetPageSource()
 
		{

			string strAddress = textBox1.Text.Trim();

			strAddress = strAddress.ToLower();

  
			if ( strAddress.Length <= HTTP.Length)
 
			{
				MessageBox.Show("Enter a web address", "Web Address Field", MessageBoxButtons.OK);
   
				textBox1.Text = HTTP;
			}
  
			else if (!strAddress.StartsWith(HTTP))
      
			{
  
				MessageBox.Show("You have Entered the wrong Protocol.", "Wrong Scheme Identifier", MessageBoxButtons.OK);
				textBox1.Text = HTTP;
 
			}
			else
 
			{

				// create the GetWebPageSource object
 
				HTMLSourceViewer.GetWebPageSource objGS = new HTMLSourceViewer.GetWebPageSource();
				objGS.setWebAddress(strAddress);

 
				strSource = objGS.GetSource(); 
				if (strSource.Length > 1)
 
				{

					showSource();
 
				}

			}
		}


		public void showSource()
 
		{

			Form1.ActiveForm.Height = 608;
 
			textBox2.Text = strSource;
 
			label2.Visible = true;
 
			textBox2.Visible = true;
 
		}


	}
}