BrightIdeasSoftware.ObjectListView.EnumerableToArray C# (CSharp) Method

        public static ArrayList EnumerableToArray(IEnumerable collection, bool alwaysCreate)
        {
            if (collection == null)
                return new ArrayList();

            if (!alwaysCreate) {
                ArrayList array = collection as ArrayList;
                if (array != null)
                    return array;

                IList iList = collection as IList;
                if (iList != null)
                    return ArrayList.Adapter(iList);
            }

            ICollection iCollection = collection as ICollection;
            if (iCollection != null)
                return new ArrayList(iCollection);

            ArrayList newObjects = new ArrayList();
            foreach (object x in collection)
                newObjects.Add(x);
            return newObjects;
        }

        /// <summary>
        /// Build our filtered list from our full list.
        /// </summary>
        protected void FilterObjects()
        {
            if (!this.listView.UseFiltering || (this.modelFilter == null && this.listFilter == null))
            {
                this.filteredObjectList = new ArrayList(this.fullObjectList);
                return;
            }

            IEnumerable objects = (this.listFilter == null) ?
                                  this.fullObjectList : this.listFilter.Filter(this.fullObjectList);

            // Apply the object filter if there is one
            if (this.modelFilter == null)
            {
                this.filteredObjectList = ObjectListView.EnumerableToArray(objects, false);
            }
            else
            {
                this.filteredObjectList = new ArrayList();
                foreach (object model in objects)
                {
                    if (this.modelFilter.Filter(model))
                    {
                        this.filteredObjectList.Add(model);
                    }
                }
            }
        }