C# | Creating an empty case-sensitive HybridDictionary Class

Last Updated : 11 Jul, 2025

HybridDictionary() creates an empty case-sensitive HybridDictionary. Syntax:

public HybridDictionary ();

Below given are some examples to understand the implementation in a better way: Example 1: 

CSHARP 
// C# code to create an empty
// case-sensitive HybridDictionary.
using System;
using System.Collections;
using System.Collections.Specialized;

class GFG {

    // Driver code
    public static void Main()
    {

        // Creating an empty case-sensitive
        // HybridDictionary named myDict
        HybridDictionary myDict = new HybridDictionary();

        // Adding key/value pairs in myDict
        myDict.Add("I", "first");
        myDict.Add("II", "second");
        myDict.Add("III", "third");
        myDict.Add("IV", "fourth");
        myDict.Add("V", "fifth");

        // Displaying the key/value pairs in myDict
        foreach(DictionaryEntry de in myDict)
            Console.WriteLine(de.Key + " " + de.Value);
    }
}

Output:

I first
II second
III third
IV fourth
V fifth

Example 2: 

CSHARP 
// C# code to create an empty
// case-sensitive HybridDictionary.
using System;
using System.Collections;
using System.Collections.Specialized;

class GFG {

    // Driver code
    public static void Main()
    {

        // Creating an empty case-sensitive
        // HybridDictionary named myDict
        HybridDictionary myDict = new HybridDictionary();

        // Adding key/value pairs in myDict
        myDict.Add("A", "Apple");

        // To show that the HybridDictionary is
        // case-sensitive
        myDict.Add("a", "Air");
        myDict.Add("B", "Banana");
        myDict.Add("C", "Cat");
        myDict.Add("D", "Dog");
        myDict.Add("d", "Dolphine");
        myDict.Add("E", "Elephant");
        myDict.Add("F", "Fish");

        // Displaying the key/value pairs in myDict
        foreach(DictionaryEntry de in myDict)
            Console.WriteLine(de.Key + " " + de.Value);
    }
}

Output:

A Apple
a Air
B Banana
C Cat
D Dog
d Dolphin
E Elephant
F Fish

Note:

  • By default, the collection is case-sensitive.
  • The comparer determines whether two keys are equal. Every key in a HybridDictionary must be unique.
  • This constructor is an O(1) operation.

Reference:

  • https://learn.microsoft.com/en-us/dotnet/api/system.collections.specialized.hybriddictionary.-ctor?view=netframework-4.7.2#System_Collections_Specialized_HybridDictionary__ctor
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