Getting enumerator that iterates through the Queue in C# Last Updated : 28 Jan, 2019 Comments Improve Suggest changes Like Article Like Report Queue<T>.GetEnumerator Method is used to get an enumerator which can iterate through the Queue. And it comes under the System.Collections.Generic namespace. Syntax: public System.Collections.Generic.Queue<T>.Enumerator GetEnumerator (); Below programs illustrate the use of the above-discussed method: Example 1: csharp // C# code to illustrate the // Queue<T>.GetEnumerator Method using System; using System.Collections.Generic; class GFG { // Driver code public static void Main() { // Creating an Queue of strings Queue<string> myq = new Queue<string>(); // Adding elements to Queue myq.Enqueue("A"); myq.Enqueue("B"); myq.Enqueue("C"); myq.Enqueue("D"); myq.Enqueue("E"); myq.Enqueue("F"); // To get an Enumerator // for the Queue IEnumerator<string> enumerator = myq.GetEnumerator(); // If MoveNext passes the end of the // collection, the enumerator is positioned // after the last element in the Queue // and MoveNext returns false. while (enumerator.MoveNext()) { Console.WriteLine(enumerator.Current); } } } Output: A B C D E F Example 2: csharp // C# code to illustrate the // Queue<T>.GetEnumerator Method using System; using System.Collections.Generic; class GFG { // Driver code public static void Main() { // Creating an Queue of integers Queue<int> myq = new Queue<int>(); // Adding elements to Queue myq.Enqueue(78); myq.Enqueue(84); myq.Enqueue(44); myq.Enqueue(77); myq.Enqueue(99); // To get an Enumerator // for the Queue IEnumerator<int> enumerator = myq.GetEnumerator(); // If MoveNext passes the end of the // collection, the enumerator is positioned // after the last element in the Queue // and MoveNext returns false. while (enumerator.MoveNext()) { Console.WriteLine(enumerator.Current); } } } Output: 78 84 44 77 99 Note: The foreach statement of the C# language hides the complexity of the enumerators. Therefore, using foreach is recommended, instead of directly manipulating the enumerator. Enumerators can be used to read the data in the collection, but they cannot be used to modify the underlying collection. Current returns the same object until either MoveNext or Reset is called. MoveNext sets Current to the next element. An enumerator remains valid as long as the collection remains unchanged. If changes are made to the collection, such as adding, modifying, or deleting elements, the enumerator is irrecoverably invalidated and its behavior is undefined. This method is an O(1) operation. Reference: https://docs.microsoft.com/en-us/dotnet/api/system.collections.generic.queue-1.getenumerator?view=netframework-4.7.2 Comment More infoAdvertise with us Next Article Getting enumerator that iterates through the Queue in C# K Kirti_Mangal Follow Improve Article Tags : C# CSharp-method CSharp-Generic-Queue CSharp-Generic-Namespace Similar Reads C# Tutorial C# (pronounced "C-sharp") is a modern, versatile, object-oriented programming language developed by Microsoft in 2000 that runs on the .NET Framework. Whether you're creating Windows applications, diving into Unity game development, or working on enterprise solutions, C# is one of the top choices fo 4 min read Introduction to .NET Framework The .NET Framework is a software development framework developed by Microsoft that provides a runtime environment and a set of libraries and tools for building and running applications on Windows operating systems. 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