In simple words causevalidation=true tells that when the same button is pressed/clicked then all validators should be true.
In other words if you have set causevalidation=true on a Button then whenever you clicked the button or whenever the click event if fire of that button the all validations checkd once and page processed if they return true else generate validation error(s).
Hope the above is okie for you.
In above replies you already went through the syntaxes.
Best of luck!Thanks & regards, Gaurav Kumar Arora Site Coordinator - DNS My blog - http://gaurav-arora.com
causesvalidation false property is used when you don't want to validate the control, For example if you want set required field validation on textbox, but if you make textbox causesvalidation property false then required field validation doesn't work._______________________________ Nisar Ahmad DotNetSpider MVM, Badge of Appreciation Award – 2010 Greatness Can't be achieved by doing big things, If you really want to be great, Do small things in Great way.