Conditional LINQ where statement?

Question

I have a linq statement that I want to add an additional where clause to if a drop down index is not 0.

people.Where(n.surname == \"surname\" || n.forename =         


        

Answer 1

Fortunately, this is easy because queries compose:

var query = people.Where(n.surname == "surname" || n.forename == "forename");
if (dropdown.SelectedIndex > 0)
{
    query = query.Where(n => n.id.ToString() == dropdown.SelectedValue);
}