c# - Javascript confirm message problem -

i have popup confirm box able show below.

but dont know if user clicked ok or cancel.

                scriptmanager.registerstartupscript(this, this.gettype(), "ajax", "<script language='javascript'>confirm('do u wanna change?');</script>", false); 

so want this.

if (orignalid != newid)                 {  scriptmanager.registerstartupscript(this, this.gettype(), "ajax", "<script language='javascript'>confirm('do u wanna change?');</script>", false);  if (user clicks yes) { add data sql } else { return; } } 

how know user has clicked??

i have tried this

1. i put code below in folder1\jscrip.js file dont kno how call have used ajax update panel in page cannot use clientscript.registerclientscriptinclude reference it. mentioned in 6th point @ link: http://www.dotnetcurry.com/showarticle.aspx?id=274

page.clientscript.registerclientscriptinclude("selective", resolveurl(@"folder1\jscrip.js"));

function confirmation() { if(confirm("are sure?")==true) return true; else return false; } 

any suggestions???thanks

functionality:

so user clicks button called "save first" in checks condition "if (orignalid != newid)" if true confirm box shown or else no confirm box shown.. if user clicks ok values enterd in db or else returns , nothing

some code:

protected void page_load(object sender, eventargs e)         { if (!ispostback)             {             }  else if (label.text != "")             {                 global.logger.debug("postback happ, label = " + label.text);                 button2_click(sender, e);             }         }   protected void button2_click(object sender, eventargs e)         { if (orignalcsid != 0 && newcsid != 0)                 {                     if (orignalid != newid)                     {                         global.logger.debug("pop crossed1");                         scriptmanager.registerstartupscript(this, this.gettype(), "ajax", string.format(cultureinfo.invariantculture, @"__dopostback('{0}', confirm('your data id1 populated in id2?').tostring());", label.text), true);                     }                     else if (page.request["__eventtarget"] == label.text)                     {                         global.logger.debug("__eventargument1 = " + page.request["__eventargument"]);                         bool userclickedok = boolean.parse(page.request["__eventargument"]);                         if (userclickedok)                         {                             // add data sql.                         }                         else                         {                             return;                         }                         label.text = "";                     }                 }           } 

you use hidden field, still have force postback after user dismisses confirm box. since end calling __dopostback() anyway, can take advantage of second argument post return value of confirm() server without using hidden field:

if (originalid != newid) {     scriptmanager.registerstartupscript(this, gettype(), "ajax",         string.format(cultureinfo.invariantculture, @"             __dopostback('{0}', confirm('are sure?').tostring());         ", yourupdatepanel.clientid), true); } else if (page.request["__eventtarget"] == yourupdatepanel.clientid) {     bool userclickedok = boolean.parse(page.request["__eventargument"]);     if (userclickedok) {         // add data sql.     } else {         return;     } } 

first, compare 2 ids. if they're different, need show confirm box on client , post result server, include startup script (note can pass true last argument registerstartupscript() in order have generate <script> tags you).

then, on client side, need call __dopostback() force postback after blocking call confirm() returns. __dopostback() takes 2 arguments: clientid of control initiated postback (the event target), , optional event argument. they're used internal asp.net plumbing in order raise postback events, doesn't mean can't use them our advantage.

moreover, if postback occurs , updatepanel event target, aforementioned asp.net plumbing refresh panel (or more, depending on updatemode properties, that's subject). call __dopostback() clientid of updatepanel containing controls want refresh, , return value of confirm(), converted string.

back server side, page reloaded, , our code runs again. since implied in question's comments if originalid , newid still different, we'll have show confirm box again, assume same time around (the else if ensures that).

the arguments passed __dopostback() accessible server-side __eventtarget , __eventargument request variables. first, check if event target our updatepanel, , if that's case, know we're handling forced postback , value of __eventargument meaningful. call boolean.parse() deserialize string generated earlier on client side, , use decide whether or not update database.