Hello @kartik,
Page_ClientValidate() will work. It returns true if the page was valid and it works fine.
If you are using ASP.NET 2.0, pass the validation group name as a parameter.
E.g.
if(Page_ClientValidate("SomeValidationGroup"))
alert('its valid');
Otherwise if there is no validation group Page_ClientValidate("") will handle it.
E.g.
if(Page_ClientValidate(""))
alert('its valid');
Hope it helps!!
Thank You!!