Use the Length array property : Array Length : Data Structure C# Examples

    
using  System;  
  
class  MainClass  {    
    public  static  void  Main()  {    
        int[]  nums  =  new  int[10];    
  
        Console.WriteLine("Length  of  nums  is  "  +  nums.Length);    
    
        Console.Write("use  Length  to  initialize  nums");
        for(int  i=0;  i  <  nums.Length;  i++)    
            nums[i]  =  i  *  i;    
    
        Console.Write("now  use  Length  to  display  nums");
        Console.Write("Here  is  nums:  ");  
        for(int  i=0;  i  <  nums.Length;  i++)    
            Console.Write(nums[i]  +  "  ");    
    }    
}