sample2.cs

C#函数手册

namespace apiBook
{
	using System;
	using System.Web;
	using System.IO;
	public class TestClass
	{
		public static void Main()
		{
			String str;
			Console.WriteLine("请输入包含有字符'&'或'\"'的字符串：");
			str=Console.ReadLine();
			String testES;			
			testES = HttpUtility.HtmlEncode(str);
			//使用HtmlEncode方法将字符串转换为 HTML 编码的字符串
			Console.WriteLine("HTML编码后的字符串是："+testES);
			StringWriter writer = new StringWriter();				HttpUtility.HtmlDecode(testES, writer);
			//使用HtmlDecode方法将已经为 HTTP 传输进行过 HTML 编码的字符串转换为已解码的字符串
			Console.Write("对于上面编码的字符串解码后的内容是："+writer.ToString());
		}
	}
}