Mega Code Archive
Removes all the elements from the target collection that are contained in the source collection
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#region License and Copyright
/*
* Dotnet Commons Collections
*
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place,
* Suite 330,
* Boston,
* MA 02111-1307
* USA
*
*/
#endregion
using System;
using System.Collections;
namespace Dotnet.Commons.Lang
{
class MainClass
{
/// <summary>
/// Converts an ICollection instance to an ArrayList instance.
/// </summary>
/// <param name="c">The ICollection instance to be converted.</param>
/// <returns>An ArrayList instance in which its elements are the elements of the ICollection instance.</returns>
public static System.Collections.ArrayList ToArrayList(System.Collections.ICollection c)
{
System.Collections.ArrayList tempArrayList = new System.Collections.ArrayList();
System.Collections.IEnumerator tempEnumerator = c.GetEnumerator();
while (tempEnumerator.MoveNext())
tempArrayList.Add(tempEnumerator.Current);
return tempArrayList;
}
/// <summary>
/// Removes all the elements from the specified collection that are contained in the target collection.
/// </summary>
/// <param name="target">Collection where the elements will be removed.</param>
/// <param name="c">Elements to remove from the target collection.</param>
/// <returns>true</returns>
public static bool RemoveAll(System.Collections.ICollection target, System.Collections.ICollection c)
{
System.Collections.ArrayList al = ToArrayList(c);
System.Collections.IEnumerator e = al.GetEnumerator();
//Reflection. Invoke "removeAll" method for proprietary classes or "Remove" for each element in the collection
System.Reflection.MethodInfo method;
try
{
method = target.GetType().GetMethod("removeAll");
if (method != null)
method.Invoke(target, new System.Object[] { al });
else
{
method = target.GetType().GetMethod("Remove");
System.Reflection.MethodInfo methodContains = target.GetType().GetMethod("Contains");
while (e.MoveNext() == true)
{
while ((bool)methodContains.Invoke(target, new System.Object[] { e.Current }) == true)
method.Invoke(target, new System.Object[] { e.Current });
}
}
}
catch (System.Exception ex)
{
throw ex;
}
return true;
}
}
}
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