using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Text.RegularExpressions;

namespace Autohyperlink
{
	/// <summary>
	/// WebForm1 的摘要說明。
	/// </summary>
	public class Autohyperlink : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox InputTextBox;
		protected System.Web.UI.WebControls.Label lbContent;
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.Button Button1;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此處放置用戶代碼以初始化頁面
		}

		#region Web 窗體設計器生成的代碼
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 該調用是 ASP.NET Web 窗體設計器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
		/// 此方法的內容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button1_Click(object sender, System.EventArgs e)
		{
			string strContent = InputTextBox.Text;
			Regex urlregex = new Regex(@"(http:\/\/([\w.]+\/?)\S*)",RegexOptions.IgnoreCase| RegexOptions.CultureInvariant| RegexOptions.IgnorePatternWhitespace| RegexOptions.Compiled);
			strContent = urlregex.Replace(strContent, "<a href=\"$1\" target=\"_blank\">$1</a>");
			Regex emailregex = new Regex(@"([a-zA-Z_0-9.-]+\@[a-zA-Z_0-9.-]+\.\w+)",RegexOptions.IgnoreCase| RegexOptions.CultureInvariant| RegexOptions.IgnorePatternWhitespace| RegexOptions.Compiled);
			strContent = emailregex.Replace(strContent, "<a href=mailto:$1>$1</a>");
			lbContent.Text += "<br>"+strContent;
		}
	}
}