MyDictionary

C#6.0 .NET FRAMEWORK 4.6

The project illustrate how You can create Your own Dictionary.

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Purpose

In way, if You want to create Your Own dictionary with some functionality thes example will be useful.

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MyDictionary class implementation

public class MyDict<T1, T2> : IEnumerable
      where T2 : class
{
    //Fields
    private List<T1> List1 = new List<T1>();
    private List<T2> List2 = new List<T2>();

    //Ctors
    public MyDict()
    {


    }

    public MyDict(T1 value) 
    {

    }

    public MyDict(MyDict<T1, T2> my)
    {
      List1 = my.List1;
      List2 = my.List2;
    }

    public MyDict(T1 value1, T2 value2)
    {
      List1.Add(value1);
      List2.Add(value2);
    }

    //Properties

    public int Count
    {
      get
      {
        return List1.Count;
      }
    }

    //Methods
    public void Add(T1 value1, T2 value2)
    {
      List1.Add(value1);
      List2.Add(value2);
    }

    public void cler()
    {
      List1.Clear();
      List2.Clear();
    }

    public bool ContainsKey(T1 value)
    {
      for (int i = 0; i < List1.Count; i++)
      {
        if (List1.Contains(value))
          return true;
      }
      return false;

    }

    public bool ContainsValue(T2 value)
    {
      foreach (T2 t in List2)
        if (t == value)
        {
          Console.WriteLine(t);
          return true;
        }

      return false;

    }

    public void ShowDict()
    {

      for (int i = 0; i < List1.Count; i++)
      {
        Console.WriteLine($"The {i + 1} pair is: {List1[i]}-{List2[i]}");
      }

    }

    public IEnumerator GetEnumerator()
    {
      return List1.GetEnumerator();
    }   
    }
}

Description of MyDictionary class

MyDict class is the generic class and implements IEnumerable interface. The class has 4 constructors of any object initialization, two Fields of List, one property which return the count of values in Dictionary and several methods:

• void Add(T1 value1, T2 value2)
• void clear()
• bool ContainsKey(T1 value)
• bool ContainsValue(T2 value)
• void ShowDict()
• IEnumerator GetEnumerator()

We can add any functionality for this class.

Program class implementation

// Creating two Dictionaries with constructors
     MyDict<string, string> dict1 = new MyDict<string, string>();
     MyDict<string, string> dict2 = new MyDict<string, string>("FirstName1", "Lastname1");

     // Adding some values
     dict2.Add("FirstName2", "Lastname2");
     dict2.Add("FirstName3", "Lastname3");

     // Showing the content of dictionary
     dict2.ShowDict();

     // Printing the count of dictionary
     Console.WriteLine(dict2.Count);

     // Creating another dictionary by copying in constructor 
     MyDict<string, string> dict3 = new MyDict<string, string>(dict2);
     dict3.ShowDict();
     Console.WriteLine();

     // Checking availability оф values
     Console.WriteLine(dict2.ContainsKey("FirstName1"));

     // Implementing foreach loop for MyDictionary class
     foreach(string str in dict2)
       Console.WriteLine(str);

Here are Illustrated the functionality of MyDictionary class, where were created the objects, were invoked the class methods: add(), showDict and etc.

Result

As You can see it is easy to use.