problem with javascript and reload page

Question

i have two problem

1. how to call a javascript function from form page and also how to call c# function from javascript because when user click on button i want to validate field of form and if validation is correct then call to c# function .
please any no about this reply

2. in second i have button when i click on button a calender shown and i collect date but problem is when i click on button i page reload , i want to stop reloading of page

in coding i set the value of calender visible true
please any body no about answer reply me

Rohan Varekar · Answer

for ur 2nd problme same u use javascript only to open ur calender on click on button call javascript and open calender control this will not refresh ur page If u have any problem mail back to me @ rohan_croma@yahoo.com

Rohan Varekar · Answer

u can't directly call C# func in javascript wht u can do is On button click call javascript function say function urfunname() { } on button click use onClientClick method ( Vs 2005) if u unable to get Onclientclick add in form load evnet like Button1.Attribute.Add(onclickurfunname()) this will validate ur func in javascript and if u validated then only it will go in C# code else not

Bechir Bejaoui · Answer

for 1. take a look on this http://asp.net/ajax/documentation/live/tutorials/ExposingWebServicesToAJAXTutorial.aspx for 2. use an html buton instead of a server side button