/// <summary>Removes an element from the invocation list of this <see cref="T:System.MulticastDelegate" /> that is equal to the specified delegate.</summary>
/// <returns>If <paramref name="value" /> is found in the invocation list for this instance, then a new <see cref="T:System.Delegate" /> without <paramref name="value" /> in its invocation list; otherwise, this instance with its original invocation list.</returns>
/// <param name="value">The delegate to search for in the invocation list. </param>
/// <exception cref="T:System.MemberAccessException">Cannot create an instance of an abstract class, or this member was invoked with a late-binding mechanism. </exception>
protected sealed override Delegate RemoveImpl(Delegate value)
{
if (value == null)
{
return(this);
}
MulticastDelegate multicastDelegate2;
MulticastDelegate multicastDelegate = MulticastDelegate.KPM((MulticastDelegate)value, this, out multicastDelegate2);
if (multicastDelegate == null)
{
return(this);
}
MulticastDelegate multicastDelegate3 = null;
MulticastDelegate result = null;
for (MulticastDelegate multicastDelegate4 = this; multicastDelegate4 != multicastDelegate; multicastDelegate4 = multicastDelegate4.prev)
{
MulticastDelegate multicastDelegate5 = (MulticastDelegate)multicastDelegate4.Clone();
if (multicastDelegate3 != null)
{
multicastDelegate3.prev = multicastDelegate5;
}
else
{
result = multicastDelegate5;
}
multicastDelegate3 = multicastDelegate5;
}
for (MulticastDelegate multicastDelegate4 = multicastDelegate2; multicastDelegate4 != null; multicastDelegate4 = multicastDelegate4.prev)
{
MulticastDelegate multicastDelegate6 = (MulticastDelegate)multicastDelegate4.Clone();
if (multicastDelegate3 != null)
{
multicastDelegate3.prev = multicastDelegate6;
}
else
{
result = multicastDelegate6;
}
multicastDelegate3 = multicastDelegate6;
}
if (multicastDelegate3 != null)
{
multicastDelegate3.prev = null;
}
return(result);
}
