C# | Finding the index of last element in the array Last Updated : 01 Feb, 2019 Comments Improve Suggest changes Like Article Like Report GetUpperBound() Method is used to find the index of the last element of the specified dimension in the array. Syntax: public int GetUpperBound (int dimension); Here, dimension is a zero-based dimension of the array whose upper bound needs to be determined. Return Value:The return type of this method is System.Int32. This method returns the index of the last element of the specified dimension in the array Or -1 if the specified dimension is empty. Exception: This method will give IndexOutOfRangeException if the value of dimension is less than zero, or equal or greater than Rank. Note: GetUpperBound(0) returns the last index in the first dimension of the array, and GetUpperBound(Rank - 1) returns the last index of the last dimension of the array. This method is an O(1) operation. Below programs illustrate the use of GetUpperBound() Method: Example 1: CSharp // C# program to illustrate the GetUpperBound(Int32) // method in 1-D array using System; public class GFG { // Main method static public void Main() { // 1-D Array int[] value = {1, 2, 3, 4, 5, 6, 7}; // Get the index of the last element // in the given Array by using // GetUpperBound(Int32) method int myvalue = value.GetUpperBound(0); Console.WriteLine("Index: {0}", myvalue); } } Output: Index: 6 Example 2: CSharp // C# program to find last index // value and rank of 2-D array using System; public class GFG { // Main method static public void Main() { // 2-D char Array char[, ] value = { { 'a', 'b' }, { 'c', 'd' }, { 'e', 'f' }, { 'g', 'h' }, { 'i', 'j' } }; // Get the index of the last element // and the rank of the given Array int myvalue = value.GetUpperBound(0); Console.WriteLine("Dimension: {0}", value.Rank); Console.WriteLine("Index: {0}", myvalue); } } Output: Dimension: 2 Index: 4 Reference: https://docs.microsoft.com/en-us/dotnet/api/system.array.getupperbound?view=netcore-2.1 Comment More infoAdvertise with us Next Article C# | Finding the index of last element in the array K Kirti_Mangal Follow Improve Article Tags : C# CSharp-method CSharp-Arrays Similar Reads C# | Array.LastIndexOf<T>(T[], T) Method Array.LastIndexOf<T>(T[], T) Method is used to search for the specified object. It returns the index of the last occurrence within the entire Array. Syntax: public static int LastIndexOf<T>(T[] array, T value); Parameters: array: It is a one-dimensional, zero-indexed array to search. val 2 min read C# | Array.FindLast() Method This method is used to search for an element that matches the conditions defined by the specified predicate and returns the last occurrence within the entire Array. Syntax: public static T FindLast<T> (T[] array, Predicate<T> match); Parameters: array: It is the one-dimensional, zero-bas 3 min read Array.LastIndexOf Method in C# | Set - 1 Array.LastIndexOf method is used to find the last matching element in a one-dimensional array. It starts the search from the last element of an array. It returns the index of the element that contains the specified value. There are 6 methods in the overload list of this method as follows: LastIndexO 8 min read Array.LastIndexOf Method in C# | Set – 2 Array.LastIndexOf method is used to find the index of the last occurrence of a value in a one-dimensional Array or in a portion of the Array. It starts the search from the last element of an array. It returns the index of the element that contains the specified value. There are 6 methods in the over 4 min read C# Arrays An array is a group of like-typed variables that are referred to by a common name. And each data item is called an element of the array. The data types of the elements may be any valid data type like char, int, float, etc. and the elements are stored in a contiguous location. Length of the array spe 8 min read Like