How to create a ListDictionary in C#?

CsharpServer Side ProgrammingProgramming

To create a ListDictionary, the code is as follows −

Example

 Live Demo

using System;
using System.Collections;
using System.Collections.Specialized;
public class Demo {
   public static void Main(){
      ListDictionary dict = new ListDictionary();
      dict.Add("1", "SUV");
      dict.Add("2", "Sedan");
      dict.Add("3", "Utility Vehicle");
      dict.Add("4", "Compact Car");
      dict.Add("5", "SUV");
      dict.Add("6", "Sedan");
      dict.Add("7", "Utility Vehicle");
      dict.Add("8", "Compact Car");
      dict.Add("9", "Crossover");
      dict.Add("10", "Electric Car");
      Console.WriteLine("ListDictionary elements...");
      foreach(DictionaryEntry d in dict){
         Console.WriteLine(d.Key + " " + d.Value);
      }
      Console.WriteLine("\nIs the ListDictionary having fixed size? = "+dict.IsFixedSize);
      Console.WriteLine("If ListDictionary read-only? = "+dict.IsReadOnly);
      Console.WriteLine("Is ListDictionary synchronized = "+dict.IsSynchronized);
      Console.WriteLine("The ListDictionary has the key K? = "+dict.Contains("K"));
      Console.WriteLine("The ListDictionary has the key 9? = "+dict.Contains("9"));
   }
}

Output

This will produce the following output −

ListDictionary elements...
1 SUV
2 Sedan
3 Utility Vehicle
4 Compact Car
5 SUV
6 Sedan
7 Utility Vehicle
8 Compact Car
9 Crossover
10 Electric Car
Is the ListDictionary having fixed size? = False
If ListDictionary read-only? = False
Is ListDictionary synchronized = False The ListDictionary has the key K? = False
The ListDictionary has the key 9? = True

Example

Let us now see another example −

 Live Demo

using System;
using System.Collections;
using System.Collections.Specialized;
public class Demo {
   public static void Main(){
      ListDictionary dict1 = new ListDictionary();
      dict1.Add("A", "Books");
      dict1.Add("B", "Electronics");
      dict1.Add("C", "Smart Wearables");
      dict1.Add("D", "Pet Supplies");
      dict1.Add("E", "Clothing");
      dict1.Add("F", "Footwear");
      Console.WriteLine("ListDictionary1 elements...");
      foreach(DictionaryEntry d in dict1){
         Console.WriteLine(d.Key + " " + d.Value);
      }
      ListDictionary dict2 = new ListDictionary();
      dict2.Add("1", "One");
      dict2.Add("2", "Two");
      dict2.Add("3", "Three");
      dict2.Add("4", "Four");
      dict2.Add("5", "Five");
      dict2.Add("6", "Six");
      Console.WriteLine("\nListDictionary2 elements...");
      foreach(DictionaryEntry d in dict2){
         Console.WriteLine(d.Key + " " + d.Value);
      }
      Console.WriteLine("Count of key/value pairs in Dictionary 2 = "+dict2.Count);
      ListDictionary dict3 = new ListDictionary();
      dict3 = dict2;
      Console.WriteLine("\nIs ListDictionary3 equal to ListDictionary2? = "+(dict3.Equals(dict2)));
      dict3.Clear();
      Console.WriteLine("Count of key/value pairs in Dictionary 3 = "+dict3.Count);
   }
}

Output

This will produce the following output −

ListDictionary1 elements...
A Books
B Electronics
C Smart Wearables
D Pet Supplies
E Clothing
F Footwear
ListDictionary2 elements...
1 One
2 Two
3 Three
4 Four
5 Five
6 Six
Count of key/value pairs in Dictionary 2 = 6
Is ListDictionary3 equal to ListDictionary2? = True
Count of key/value pairs in Dictionary 3 = 0
raja
Published on 11-Dec-2019 07:04:07
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