How Can I do to foreach all register of Business Object?

For example I have a order master-detail form and I want to Sum all Details for my order I think anything do:

int Total = 0;

for each (itemBO in ColletionBO)

        Total += OrderDetailBO.Price;

enfor

How Can I do it.

at,

Marcio Valério

at,

Marcio Valerio da Silva