Question

I have Array of objects SomeObjects[] objects. This ‘objects’ may contain type of ‘Employee’, ‘Customer’ or something else. I wanted to write a linq query if ‘objects’ contain type of ‘Employee’ and if his name (Employee.Name) is ‘John’, I want to get the employeeid.

Is it possible?

Answer 1

Yes. You can use the safe cast operator as operator in your query to find objects of a specific type and have them cast to that type:

var employees = from obj in objects
                let emp = obj as Employee
                where emp != null && emp.Name == "John"
                select emp;