/* 创建者：菜刀居士的博客
 * 创建日期：2014年07月07号
 */

namespace Net.CRM.OrganizationService
{
    using System;
    using Microsoft.Xrm.Sdk;
    using Microsoft.Xrm.Sdk.Query;

    /// <summary>
    /// EntityCollection
    /// </summary>
    public class EntityCollectionDemo
    {
        /// <summary>
        /// 基本模式,遍历EntityCollection
        /// </summary>
        public void Run(EntityCollection ec,IOrganizationService service)
        {
            if (ec != null && ec.Entities.Count > 0)
            {
                foreach(Entity en in ec.Entities)
                {
                    service.Delete(en.LogicalName, en.Id);
                }
            }
        }

        /// <summary>
        /// 高速模式,遍历EntityCollection
        /// </summary>
        public void QuickRun(EntityCollection ec, IOrganizationService service)
        {
            ec.ReadMultiple(en => { service.Delete(en.LogicalName, en.Id); });
        }
    }

    /// <summary>
    /// 扩展方法
    /// </summary>
    public static class ExtensionFunction
    {
        public static void ReadMultiple(this EntityCollection ec,Action<Entity> action)

        {
            if (ec != null && ec.Entities.Count > 0)
            {
                foreach (Entity en in ec.Entities)
                {
                    action(en);
                }
            }
        }
    }
}

对照: