Asp.net html解码器

public partial class 解码编码转化器 : System.Web.UI.Page    {        protected void Page_Load(object sender, EventArgs e)        {        }        protected void Button1_Click(object sender, EventArgs e)        {            //TextBox2.Text=Server.HtmlEncode(TextBox1.Text.Replace("\n","</br>").Replace(" "," "));            TextBox2.Text=HttpUtility.HtmlEncode(TextBox1.Text.Replace("\n", "</br>").Replace(" ", " "));                    }        protected void Button2_Click(object sender, EventArgs e)        {            TextBox2.Text = Server.HtmlDecode(TextBox1.Text.Replace("</br>","\n" ).Replace( " "," "));        }    }