MultiList: .NET Generic List with Multiple Sort Orders

// 
// MultiList library - Copyright 2008 by Michael Moorman / AsAbove.net
// This work is released to the public domain, and may be used for any purpose, without any conditions.
// 
using System;
using System.Collections.Generic;
using System.Text;

namespace AsAbove.Collections.Exception
{
	/// <summary>
	/// EnumeratorTypeExpectedException is thrown when the <see cref="AsAbove.Collections.MultiList&lt;T&gt;">MultiList</see> class is constructed with an 
	/// invalid type in the first argument. The first argument must an enumerator type.
	/// </summary>
	public class EnumeratorTypeExpectedException : ApplicationException
	{
		/// <summary>
		/// 
		/// </summary>
		public EnumeratorTypeExpectedException ()
			:
			base ("The constructor argument 'typeOfEnum' must be an enumerator type which defines " +
				"the sort orders to be apply to the MultiSort class object")
		{}
	}

	/// <summary>
	/// InsufficientIComparerCountException is thrown by the <see cref="AsAbove.Collections.MultiList&lt;T&gt;">MultiList</see> constructor does not contain
	/// a sufficient number of comparer classes. 
	/// </summary>
	public class InsufficientIComparerCountException : ApplicationException
	{
		/// <summary>
		/// 
		/// </summary>
		/// <param name="count"></param>
		public InsufficientIComparerCountException (int count)
			:
			base ("There were not enough IComparer objects passed to the constructor of the MultiSort class. " +
				"The constructor expected " + count + "IComparer objects")
		{}
	}

	/// <summary>
	/// InvalidEnumeratorException is thrown if a method enumerator argument is provided that does not the 
	/// enumerator type used in the <see cref="AsAbove.Collections.MultiList&lt;T&gt;">MultiList</see> constructor.
	/// </summary>
	public class InvalidEnumeratorException : ApplicationException
	{
		/// <summary>
		/// 
		/// </summary>
		public InvalidEnumeratorException ()
			:
			base ("Invalid enumerator.")
		{ }
	}

	/// <summary>
	/// MultiListObjectNotFoundException is thrown by the <see cref="AsAbove.Collections.MultiList&lt;T&gt;">MultiList</see> class
	/// <see cref="AsAbove.Collections.MultiList&lt;T&gt;.Find&lt;ComparisonType&gt; (AsAbove.Collections.MultiList&lt;T&gt;.ITypeComparer&lt;ComparisonType&gt;, ComparisonType)">Find</see> method when no match is found.
	/// </summary>
	public class MultiListObjectNotFoundException : ApplicationException
	{
		/// <summary>
		/// 
		/// </summary>
		public MultiListObjectNotFoundException ()
			:
			base ("Object not found in list.")
		{ }
	}

}