Removes an item from the collection. - CSharp System.Collections.Generic

CSharp examples for System.Collections.Generic:ICollection

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Description

Removes an item from the collection.

Demo Code

// (c) Copyright Microsoft Corporation.
using System.Reflection;
using System.Linq;
using System.Diagnostics.CodeAnalysis;
using System.ComponentModel;
using System.Collections;
using System;/*  w w  w  . j a  v  a 2s.  co  m*/

public class Main{
        /// <summary>
        /// Removes an item from the collection.
        /// </summary>
        /// <param name="collection">The collection.</param>
        /// <param name="item">The item to be removed.</param>
        public static void Remove(this IEnumerable collection, object item)
        {
            ICollectionView collectionView = collection as ICollectionView;
            if (collectionView != null)
            {
                collectionView.SourceCollection.Remove(item);
            }
            else
            {
                Type genericListType = collection.GetType().GetInterfaces().Where(interfaceType => interfaceType.FullName.StartsWith("System.Collections.Generic.IList`1", StringComparison.Ordinal)).FirstOrDefault();
                if (genericListType != null)
                {
                    int index = (int)genericListType.GetMethod("IndexOf").Invoke(collection, new object[] { item });
                    if (index != -1)
                    {
                        genericListType.GetMethod("RemoveAt").Invoke(collection, new object[] { index });
                    }
                }
                else
                {
                    IList list = collection as IList;
                    list.Remove(item);
                }
            }
        }
}

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