c# - Optional Parameters, No overload for 'Employee' matches delegate 'System.Func<Employee>

Question

When trying to invoke a delegate which reference a function with optional parameter, iam getting No overload for 'Employee' matches delegate 'System.Func

Then how to call it, when i don't need to pass the parameter.

    Func<Employee> print = Employee;
    Employee employee = print();

    private Employee Employee(int employeeID = 1)
    {
        return new Employee();
    }

Answer 1

You can achieve this with delegates providing the optional parameters.

 delegate Employee Print (int arg = 1);

 Print  EmployeeMethod = Employee;
 EmployeeMethod();

Func and Action cannot support optional parameters or rather they are not defined that way.

public delegate TResult Func<in T, out TResult>(T arg);