ASP.net page Pop-up dialog box

------New MessageBox.cs class------
Using System;
Using System.Text;

Namespace Project.library
{
<summary>
MESSAGEBOX Displays the message prompt dialog box.
</summary>
public class MessageBox
{
Public MessageBox ()
{
//
TODO: Add constructor logic here
//
}
<summary>
Display Message prompt dialog box
</summary>
<param name= "page" > current page pointer, generally this</param>
<param name= "MSG" > Hint info </param>
public static void Show (System.Web.UI.Page Page, String msg)
{
Page. RegisterStartupScript ("message", "<script language= ' JavaScript ' Defer>alert" + MSG. ToString () + "');</script>");
}

<summary>
Control Click the Message confirmation Prompt box
</summary>
<param name= "page" > current page pointer, generally this</param>
<param name= "MSG" > Hint info </param>
public static void Showconfirm (System.Web.UI.WebControls.WebControl control, String msg)
{
CONTROL.ATTRIBUTES.ADD ("OnClick", "If" (!window.confirm (' "+msg+")) {return false;} ");
CONTROL.ATTRIBUTES.ADD ("onclick", "return confirm (' + msg + ');");
}

<summary>
Display the message prompt dialog box and make a page jump
</summary>
<param name= "page" > current page pointer, generally this</param>
<param name= "MSG" > Hint info </param>
<param name= "url" > Jump target url</param>
public static void Showandredirect (System.Web.UI.Page Page, String msg, string URL)
{
StringBuilder Builder = new StringBuilder ();
Builder.append ("<script language= ' JavaScript ' defer>");
Builder.appendformat ("alert (' {0} ');", msg);
Builder.appendformat ("top.location.href= ' {0} '", URL);
Builder.append ("</script>");
Page. RegisterStartupScript ("Message", builder.tostring ());

       }
       ///<summary>
        Output custom script information
       ///</summary>
        ///<param name= "page" > current page pointer, generally this</param>
        ///<param name= "script" > Output script </param>
        public static void Responsescript (System.Web.UI.Page Page, String script)
         {
            page. RegisterStartupScript ("message", "<script language= ' JavaScript ' defer>" + script + "</script>");
       }
   }
}
------The CS page calls------
Project.Library.MessageBox.Show (System.Web.UI.Page, "I am the dialog box.) ");