Use the IndexOf() and LastIndexOf() methods to find the string 'Hello' in stringArray : Array Index : Data Structure C# Examples

    
using  System;

class  MainClass
{

    public  static  void  Main()
    {
        string[]  stringArray  =  {"Hello",  "to",  "everyone",  "Hello",  "all"};
        Console.WriteLine("stringArray:");
        for  (int  i  =  0;  i  <  stringArray.Length;  i++)
        {
            Console.WriteLine("stringArray["  +  i  +  "]  =  "  +  stringArray[i]);
        }


        int  index  =  Array.IndexOf(stringArray,  "Hello");
        Console.WriteLine("Array.IndexOf(stringArray,  \"Hello\")  =  "  +  index);
        index  =  Array.LastIndexOf(stringArray,  "Hello");
        Console.WriteLine("Array.LastIndexOf(stringArray,  \"Hello\")  =  "  +  index);

    }

}