ASP. NET dialog box

We are. in the development process of the net program, it is often necessary to interact with the user, for example, whether a certain operation is successful, "OK" or "cancel ", and whether to jump to a page after "OK" or "cancel" is selected. The following is a summary of my use of frequently-used dialog boxes. I hope this will help you. You are also welcome to add this article.
   
      (1) click the button on the page and a dialog box is displayed, prompting whether to "OK" or "cancel". We can add attributes to the button to complete the operation:
        Example:
      Public System. Web. UI. webcontrols. Button btndelrow;
      Btndelrow. Attributes. Add ("onclick", "Return confirm ('Are you sure you want to delete it? ');");

   (2) click the button on the page to bring up a dialog box prompting "OK" or "cancel". Select "OK" or "cancel" to go to the corresponding page:
    Example:
     String strmsg, string strurl_yes, string strurl_no;
     Response. Write ("<script language = 'javascript '> If (window. Confirm ('" + strmsg + "')){Window. Location. href = '"+ strurl_yes +
                             "'} Else {window. Location. href ='" + strurl_no + "'}; </SCRIPT> ");

   (3) After completing an operation on the page, a dialog box is displayed, prompting whether the operation is successful ".
    Example:
   Response. Write ("<SCRIPT> alert ('deleted successfully! ') </SCRIPT> ");

   (4) after you complete an operation on the page, a dialog box is displayed, prompting whether the operation is successful.
    Example:
   Response. Write ("<SCRIPT> alert ('deleted successfully! '); Window. Location. href = 'www .cnblogs.com' </SCRIPT> ");

   (5) Allow ASP. NET Server controls to issue client script blocks in the page:
   Public Virtual void registerstartupscript (string key, string script );

   Example:
   If (! This. isstartupscriptregistereD ("hello "))
       This. registerstartupscript ("hello", "<SCRIPT> alert ('Hello! ') </SCRIPT> ");

   (6) The following is a pop-up dialog box call class compiled by myself:

Using system;
Using system. Web;
Namespace showmessage
{
   /// <Summary>
   /// Summary of MSG.
   /// </Summary>
   Public class showmessage
   {
       Public showmessage ()
       {
           //
           // Todo: add the constructor logic here
           //
       }
       Public static void showmessage (string strmsg)
       {
           System. web. httpcontext. current. response. write ("<script language = 'javascript '> window. alert ('"+ strmsg +"'); </SCRIPT> ");
       }      
       Public static void showmessage (system. Web. UI. Page, string strmsg)
       {
           Page. response. Write ("<script language = 'javascript '> window. Alert ('" + strmsg + "'); </SCRIPT> ");
      }
       Public static void showmessage (string strmsg, string URL)
       {
           System. web. httpcontext. current. response. write ("<script language = 'javascript '> window. alert ('"+ strmsg +"'); window. location. href = '"+ URL +"' </SCRIPT> ");           
       }
       Public static void showmessage (system. Web. UI. Page, string strmsg, string URL)
       {
           Page. response. write ("<script language = 'javascript '> window. alert ('"+ strmsg +"'); window. location. href = '"+ URL +"' </SCRIPT> ");           
       }