prevent postback of HtmlButton in C#

Question

I am creating HtmlButton dynamically in .cs file. Adding it to Panel using

HtmlButton b1 = new HtmlButton();
b1.Attribute.Add(\"onclick\",\"javascript:valid         


        

Answer 1

return false to prevent postback:

b1.Attribute.Add("onclick","javascript:validateNclick(this.id);return false;");

Update:
You can also do this:

b1.Attribute.Add("onclick","javascript:return validateNclick(this.id);");  

Then in your validateNclick function, if you want to have postback, return true, if not, return false.

Answer 2

if you use jQuery you can use preventDefault() to do this

Answer 3

b1.Attribute.Add("onclick","return validateNclick(this.id);");

function validateNclick(id){
//...
if(condition){
   return true
}
else{
  return false;
}
}

Answer 4

on the javascript function return true or false and then add the return to your onclick as I show here.

    function validateNclick(me)
    {
       if(allIsOk)
       {
         return true;
       }
       else
       {
         return false
        }
    }

and your attribute.

b1.Attribute.Add("onclick","javascript:return validateNclick(this);");