Mega Code Archive
Sum with object property
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using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
public class Employee {
public int id;
public string firstName;
public string lastName;
public static ArrayList GetEmployeesArrayList() {
ArrayList al = new ArrayList();
al.Add(new Employee { id = 1, firstName = "J", lastName = "R" });
al.Add(new Employee { id = 2, firstName = "W", lastName = "G" });
al.Add(new Employee { id = 3, firstName = "A", lastName = "H" });
al.Add(new Employee { id = 4, firstName = "D", lastName = "L" });
al.Add(new Employee { id = 101, firstName = "K", lastName = "F" });
return (al);
}
public static Employee[] GetEmployeesArray() {
return ((Employee[])GetEmployeesArrayList().ToArray(typeof(Employee)));
}
}
public class EmployeeOptionEntry {
public int id;
public long optionsCount;
public DateTime dateAwarded;
public static EmployeeOptionEntry[] GetEmployeeOptionEntries() {
EmployeeOptionEntry[] empOptions = new EmployeeOptionEntry[] {
new EmployeeOptionEntry {
id = 1,
optionsCount = 2,
dateAwarded = DateTime.Parse("1999/12/31") },
new EmployeeOptionEntry {
id = 101,
optionsCount = 2,
dateAwarded = DateTime.Parse("1998/12/31") }
};
return (empOptions);
}
}
public class MainClass {
public static void Main() {
IEnumerable<EmployeeOptionEntry> options = EmployeeOptionEntry.GetEmployeeOptionEntries();
long optionsSum = options.Sum(o => o.optionsCount);
Console.WriteLine("The sum of the employee options is: {0}", optionsSum);
}
}
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