Solution of error in Response.Write output JS script in Ajax

Solution of error in Response.Write output JS script in Ajax

Ajax 3.5 is not altered. Later tried to Scriptmanager.registerstartupscript (UpdatePanel1, typeof (UpdatePanel), "AAA", "<script >alert (' Data add success! ') </script>, True); The last true in is changed to Scriptmanager.registerstartupscript (UpdatePanel1, typeof (UpdatePanel), "AAA", " <script>alert (' Data add success! ') </script> ", false); Write a generic message prompt class below.

public class MessageBox
{

Private HttpContext mycontext = null;
Public MessageBox (HttpContext currentcontext)
{
Mycontext = CurrentContext;
}
<summary>
customizing pop-up window Content
</summary>
<param name= "MSG" ></param>
public void Show (String msg)
{
MyContext.Response.Write ("<script>alert (' + msg + ');</script>");
Scriptmanager.registerstartupscript ((System.Web.UI.Page) Mycontext.currenthandler, typeof (System.Web.UI.Page), " AAA "," <script>alert (' "+ msg +" ');</script> ", false);
}
<summary>
Customize pop-up window content and move to a new page
</summary>
<param name= "MSG" > Custom message </param>
<param name= "Url" > A new page to go to </param>
public void Show (String msg,string Url)
{
MyContext.Response.Write ("<script>alert (' + msg +"); Web effects: location= ' "+url+" ';</script> ");
Scriptmanager.registerstartupscript ((System.Web.UI.Page) Mycontext.currenthandler, typeof (System.Web.UI.Page), " AAA "," <script>alert (' + msg + '); javascript:location= ' "+ Url +" ';</script> ", false);

}
<summary>
Customize pop-up window content, customize whether to close the current page
</summary>
<param name= "MSG" ></param>
<param name= "Close" ></param>
public void Show (String msg, bool close)
{
if (Close)
{
MyContext.Response.Write ("<script>alert (' + msg +"); Javascript:window.close ();</script> ");
Scriptmanager.registerstartupscript ((System.Web.UI.Page) Mycontext.currenthandler, typeof (System.Web.UI.Page), " AAA "," <script>alert (' + msg + '); Javascript:window.close ();</script> ", false);
}
Else
{
MyContext.Response.Write ("<script>alert (' + msg + ');</script>");
Scriptmanager.registerstartupscript ((System.Web.UI.Page) Mycontext.currenthandler, typeof (System.Web.UI.Page), " AAA "," <script>alert (' + msg + '); Javascript:window.close ();</script> ", false);
}
}
}