public int CompareTo(object obj)
{
if (!(obj is Category))
{
return(1); // ??
}
var categoryObj = (Category)obj;
var nameComparison =
(string.Compare(ProductName, categoryObj.ProductName, StringComparison.InvariantCulture));
var typeComparison = Type.CompareTo(categoryObj.Type);
var topicComparison = Topic.CompareTo(categoryObj.Topic);
if (nameComparison != 0)
{
return(nameComparison);
}
if (typeComparison != 0)
{
return(typeComparison);
}
if (topicComparison != 0)
{
return(topicComparison);
}
return(0);
}
public int CompareTo(Category other)
{
if (other == null)
{
return(0);
}
var messageCompare = String.Compare(Message, other.Message, StringComparison.Ordinal);
if (messageCompare == 0)
{
var typeCompare = Type.CompareTo(other.Type);
if (typeCompare == 0)
{
return(Topic.CompareTo(other.Topic));
}
else
{
return(typeCompare);
}
}
else
{
return(messageCompare);
}
}
public int CompareTo(object obj)
{
if (obj == null)
{
return(1);
}
if (obj is Category)
{
var cobj = (Category)obj;
var n = Name?.CompareTo(cobj.Name) ?? -1;
var ty = Type.CompareTo(cobj.Type);
var to = Topic.CompareTo(cobj.Topic);
var result = n != 0 ? n : (ty != 0 ? ty : to);
return(result);
}
else
{
throw new ArgumentException($"Can not compate Category with {obj.GetType().Name}");
}
}
