Extension method to fetch the value from array based on index if index is greater than length return the default of the type being expected else cast the found value at index and return it - CSharp System

CSharp examples for System:Array Index

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Description

Extension method to fetch the value from array based on index if index is greater than length return the default of the type being expected else cast the found value at index and return it

Demo Code


using System.Threading.Tasks;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System;//from w w  w.  ja v a  2  s  .  com

public class Main{
        /// <summary>
        /// Extension method to fetch the value from array based on index
        /// if index is greater than length return the default of the type being expected
        /// else  cast the found value at index and return it
        /// </summary>
        /// <typeparam name="T">type of input array</typeparam>
        /// <typeparam name="R">type of value to be found</typeparam>
        /// <param name="inputArray">input array</param>
        /// <param name="index">index of the value to be found</param>
        /// <returns>value at the index or default value of return type</returns>
        public static R CheckIndexAndGetValue<T, R>(this T[] inputArray, int index)
        {
            if (inputArray.Length > index)
            {
                try
                {
                    return (R)Convert.ChangeType(inputArray[index], typeof(R));
                }
                catch
                {
                    return default(R);
                }
            }
            else
                return default(R);
        }
}

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