public int CompareTo(Employee rhs, Employee.EmployeeComparer.ComparisonType which)
{
switch (which)
{
case Employee.EmployeeComparer.ComparisonType.EmpID:
return(this.empID.CompareTo(rhs.empID));
case Employee.EmployeeComparer.ComparisonType.Yrs:
return(this.yearsOfSvc.CompareTo(rhs.yearsOfSvc));
}
return(0);
}
/// <summary>
/// CompareTo:
/// Uses the generic counterpart to the CompareTo funciton in IComparable
/// Evaluates two employee classes based on their properties
/// NOTE: This is the custom version of the same CompareTo method however:
/// -This version uses a nested called EmployeeComparer which implements IComparer
/// -The internal class allows a custom comparison to be selected when sorting
/// -This makes sorting much cleaner
/// </summary>
/// <param name="other">The employee being valuated</param>
/// <returns>-1 if the previous is greater, 0 if they match, 1 if the latter is greater</returns>
public int CompareTo(Employee other, Employee.EmployeeComparer.ComparisonType whichOne)
{
switch (whichOne) //Compare the employee based on the selected property
{
case Employee.EmployeeComparer.ComparisonType.Name:
return(this.Name.CompareTo(other.Name));
case Employee.EmployeeComparer.ComparisonType.Number:
return(this.Number.CompareTo(other.Number));
case Employee.EmployeeComparer.ComparisonType.Rate:
return(this.Rate.CompareTo(other.Rate));
case Employee.EmployeeComparer.ComparisonType.Hours:
return(this.Hours.CompareTo(other.Hours));
case Employee.EmployeeComparer.ComparisonType.Gross:
return(this.Gross.CompareTo(other.Gross));
}
return(0);
}
/// <summary>
/// Special implementation to be called by custom comparer
/// </summary>
/// <param name="rhs"></param>
/// <param name="Which"></param>
/// <returns>compareTo result value(-1,0,1)</returns>
public int CompareTo(Employee rhs, Employee.EmployeeComparer.ComparisonType Which)
{
switch (Which)
{
case Employee.EmployeeComparer.ComparisonType.Name:
return(this.Name.CompareTo(rhs.Name));
case Employee.EmployeeComparer.ComparisonType.Number:
return(this.Number.CompareTo(rhs.Number));
case Employee.EmployeeComparer.ComparisonType.Rate:
return(this.Rate.CompareTo(rhs.Rate));
case Employee.EmployeeComparer.ComparisonType.Hours:
return(this.Hours.CompareTo(rhs.Hours));
case Employee.EmployeeComparer.ComparisonType.Gross:
return(this.Gross.CompareTo(rhs.Gross));
}
return(0);
}