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InterviewSolution
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Check whether a list is empty or not in C# |
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Answer» The Count property can be used to check if a list is empty or not. This property GETS the number of elements in the list. So, if the Count property gives 0 for a list, this means that the list is empty. A program that checks if the list is empty or not using the Count property in C# is given as follows: using System; using System.Collections.Generic; CLASS Demo { public static void Main() { List<INT> list1 = new List<int>(); List<int> list2 = new List<int>(); list1.Add(7); list1.Add(1); list1.Add(5); list1.Add(9); list1.Add(3); if (list1.Count == 0) { Console.WriteLine("List 1 is empty"); } else { Console.WriteLine("The elements in List 1 are:"); foreach (int i in list1) { Console.WriteLine(i); } } if (list2.Count == 0) { Console.WriteLine("List 2 is empty"); } else { Console.WriteLine("The elements in List 2 are:"); foreach (int i in list2) { Console.WriteLine(i); } } } }The output of the above program is as follows: The elements in List 1 are: 7 1 5 9 3 List 2 is emptyIn the above program, if the list is empty then that is printed. Otherwise all the list elements are printed. |
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