/// <summary>
/// Removes a weak reference to an instance from the instances list.
/// </summary>
/// <param name="instance">An instance of <see cref="ImageListManager"/>.</param>
private static void RemoveInstance(ImageListManager instance)
{
for (int i = 0, length = instances.Count; i < length; i++)
{
var imageListManager = instances[i].Target as ImageListManager;
if (imageListManager == null)
{
instances.RemoveAt(i--);
length--;
}
else if (imageListManager == instance)
{
instances.RemoveAt(i);
break;
}
}
}
/// <summary>
/// Adds a weak reference of an instance to the <see cref="instances"/> list.
/// </summary>
/// <param name="instance">An instance of <see cref="ImageListManager"/>.</param>
private static void AddInstance(ImageListManager instance)
{
instances.Add(new WeakReference(instance));
}