C# | Count the number of key/value pairs in the Hashtable Last Updated : 11 Jul, 2025 Comments Improve Suggest changes Like Article Like Report The Hashtable class represents a collection of key-and-value pairs that are organized based on the hash code of the key. The key is used to access the items in the collection. Hashtable.Count Property is used to get the total number of the key/value pairs contained in the Hashtable. Syntax: myTable.Count Here, myTable is the name of the Hashtable. Below given are some examples to understand the implementation in a better way: Example 1: CSHARP // C# code to get the number of key-and-value // pairs contained in the Hashtable. using System; using System.Collections; class GFG { // Driver code public static void Main() { // Creating a Hashtable Hashtable myTable = new Hashtable(); // Adding elements in Hashtable myTable.Add("2", "Even & Prime"); myTable.Add("3", "Odd & Prime"); myTable.Add("4", "Even & non-prime"); myTable.Add("9", "Odd & non-prime"); // To get the number of key-and-value // pairs contained in the Hashtable. Console.WriteLine(myTable.Count); } } Output: 4 Example 2: CSHARP // C# code to get the number of key-and-value // pairs contained in the Hashtable. using System; using System.Collections; class GFG { // Driver code public static void Main() { // Creating an empty Hashtable Hashtable myTable = new Hashtable(); // To get the number of key-and-value // pairs contained in the Hashtable. Console.WriteLine(myTable.Count); } } Output: 0 Reference: https://learn.microsoft.com/en-us/dotnet/api/system.collections.hashtable.count?view=netframework-4.7.2 Comment More infoAdvertise with us S Sahil_Bansall Follow Improve Article Tags : Misc C# CSharp-Collections-Hashtable CSharp-Collections-Namespace Practice Tags : Misc Explore IntroductionC# Tutorial 4 min read Introduction to .NET Framework 6 min read C# .NET Framework (Basic Architecture and Component Stack) 6 min read C# Hello World 4 min read Common Language Runtime (CLR) in C# 4 min read FundamentalsC# Identifiers 2 min read C# Data Types 7 min read C# Variables 4 min read C# Literals 5 min read C# Operators 7 min read C# Keywords 5 min read Control StatementsC# Decision Making (if, if-else, if-else-if ladder, nested if, switch, nested switch) 5 min read C# Switch Statement 4 min read C# Loops 4 min read C# Jump Statements (Break, Continue, Goto, Return and Throw) 4 min read OOP ConceptsC# Class and Objects 5 min read C# Constructors 5 min read C# Inheritance 6 min read C# Encapsulation 4 min read C# Abstraction 4 min read MethodsC# Methods 4 min read C# Method Overloading 4 min read C# | Method Parameters 7 min read C# Method Overriding 9 min read Anonymous Method in C# 3 min read ArraysC# Arrays 8 min read C# Jagged Arrays 4 min read C# Array Class 7 min read How to Sort an Array in C# | Array.Sort() Method Set - 1 8 min read How to find the rank of an array in C# 2 min read ArrayListArrayList in C# 6 min read C# ArrayList Class 7 min read C# | Array vs ArrayList 2 min read StringC# Strings 7 min read C# Verbatim String Literal - @ 5 min read C# String Class 9 min read C# StringBuilder 4 min read C# String vs StringBuilder 3 min read TupleC# Tuple 7 min read C# Tuple Class 3 min read C# ValueTuple 7 min read C# ValueTuple Struct 4 min read IndexersC# Indexers 4 min read C# Multidimensional Indexers 5 min read C# - Overloading of Indexers 3 min read Like