if we have 3 tier
how we pass / handle excpetion over the tiers.
ex:In Dal
public dataset getempid(){
try
{
}
catch(Exception ex)
{
}
}
In Busibess layer
public dataset Bgetempid()
{
// my doubt is again here i have to write try catch block
}
now in Presentation layer
we create object for the business layer
here howto catch theexception and how to knowwhere the exception has occured