Count IEnumerable Items - CSharp System.Collections.Generic

CSharp examples for System.Collections.Generic:IEnumerable

  1. HOME
  2. CSharp
  3. System.Collections.Generic
  4. IEnumerable

Description

Count IEnumerable Items

Demo Code

/* Copyright 2009 HPDI, LLC
 * //  www.j a  v a2  s  .  c  o m
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
using System.Text;
using System.Collections.Generic;
using System.Collections;

public class Main{
        public static int CountItems(IEnumerable items)
        {
            var itemCollection = items as ICollection;
            if (itemCollection != null)
            {
                return itemCollection.Count;
            }
            else
            {
                int count = 0;
                foreach (var item in items)
                {
                    ++count;
                }
                return count;
            }
        }
}

Related Tutorials