If you look inside the dbml
file, you can see it is generate partial classes
, so you can some partial classes to your entities, and create other properties, like TotalAmount
you need. There you can access other properties and make calculated property, for sample:
namespace YourEntityNameSpace
{
public partial class CustomerPurchase
{
public double TotalAmount
{
get
{
// your code goes here to calculate, for sample:
return UnitPrice * Amount;
}
}
}
}