public int CompareTo(Invoice other)
{
if (ReferenceEquals(this, other))
{
return(0);
}
if (ReferenceEquals(null, other))
{
return(1);
}
var serialNumberComparison = string.Compare(SerialNumber, other.SerialNumber, StringComparison.Ordinal);
if (serialNumberComparison != 0)
{
return(serialNumberComparison);
}
var companyNameComparison = string.Compare(CompanyName, other.CompanyName, StringComparison.Ordinal);
if (companyNameComparison != 0)
{
return(companyNameComparison);
}
var subtotalComparison = Subtotal.CompareTo(other.Subtotal);
if (subtotalComparison != 0)
{
return(subtotalComparison);
}
var departmentComparison = Department.CompareTo(other.Department);
if (departmentComparison != 0)
{
return(departmentComparison);
}
var issueDateComparison = IssueDate.CompareTo(other.IssueDate);
if (issueDateComparison != 0)
{
return(issueDateComparison);
}
return(DueDate.CompareTo(other.DueDate));
}