Searches for the specified object and returns the index of the first occurrence within the entire one-dimensional System.Array. : Array Util « Collections Data Structure « C# / C Sharp






  1. C# / C Sharp
  2. Collections Data Structure
  3. Array Util

Searches for the specified object and returns the index of the first occurrence within the entire one-dimensional System.Array.

  
        
//Microsoft Public License (Ms-PL)
//http://visualizer.codeplex.com/license

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Redwerb.BizArk.Core.ArrayExt
{
    /// <summary>
    /// Provides extension methods for string arrays.
    /// </summary>
    public static class ArrayExt
    {

        /// <summary>
        /// Searches for the specified object and returns the index of the first occurrence
        /// within the entire one-dimensional System.Array.
        /// </summary>
        /// <param name="arr">The one-dimensional System.Array to search.</param>
        /// <param name="val">The object to locate in array.</param>
        /// <returns>
        /// The index of the first occurrence of value within the entire array, if found;
        /// otherwise, the lower bound of the array minus 1.
        /// </returns>
        /// <exception cref="System.ArgumentNullException">arr is null</exception>
        /// <exception cref="System.RankException">arr is multidimensional.</exception>
        public static int IndexOf(this Array arr, object val)
        {
            return Array.IndexOf(arr, val);
        }

        /// <summary>
        /// Determines if the array contains the given value.
        /// </summary>
        /// <param name="arr">The one-dimensional System.Array to search.</param>
        /// <param name="val">The object to locate in array.</param>
        /// <returns>
        /// </returns>
        /// <exception cref="System.ArgumentNullException">arr is null</exception>
        /// <exception cref="System.RankException">arr is multidimensional.</exception>
        public static bool Contains(this Array arr, object val)
        {
            if (Array.IndexOf(arr, val) < arr.GetLowerBound(0))
                return false;
            else
                return true;
        }

        /// <summary>
        /// Copies the array to a new array of the same type.
        /// </summary>
        /// <param name="arr"></param>
        /// <returns></returns>
        public static Array Copy(this Array arr)
        {
            var newArr = Array.CreateInstance(arr.GetType().GetElementType(), arr.Length);
            arr.CopyTo(newArr, 0);
            return newArr;
        }
   }
}








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