To Maintain a Dictionary in Alist Form in C#

Creating tables in SQL is much complex and maintaining relationships between them. To avoid this complexity we can use dictionary.

I am telling about creation of dictionary which can consist and store multiple information together. It does not involve any SQL table neither any SQL query nor any DB connectivity. It is much more useful for small applications and large applications having small information list.

Complete code showing the keywords and way to maintain a dictionary and perform various processing.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
       static void Main(string[] args)
       {
          // a dictionary to maintain the authors with their age
          Dictionary<string, Int16> AuthorList = new Dictionary<string, Int16>();
          AuthorList.Add("Manish", 35);
          AuthorList.Add("Mukesh", 25);
          AuthorList.Add("Praveen", 29);
          AuthorList.Add("Rajesh", 21);
          AuthorList.Add("Dinesh", 84);
          AuthorList.Add("Manisha Gupta", 22);

         // Remove item with key = 'Manisha Gupta'
         AuthorList.Remove("Manisha Gupta");

        //Find a key
        if (!AuthorList.ContainsKey("Manisha Gupta"))
        {
          AuthorList["Manisha Gupta"] = 22;
          Console.WriteLine("Key not found");
          Console.ReadLine();
       }
       else
       {
          Console.WriteLine("Key found");
          Console.ReadLine();
       }

      //Find a value
      if (!AuthorList.ContainsValue(9))
      {
         Console.WriteLine("Item not found");
         Console.ReadLine();
     }
     else
         Console.WriteLine("Item found");
         Console.ReadLine();

       //to read all the authors in the dictionary
       foreach (KeyValuePair<string, Int16> author in AuthorList)
       {
          Console.WriteLine("Key: {0}, Value: {1}", author.Key, author.Value);
          Console.ReadLine();
      }
      // to count the number of authors in the authorlist
      Console.WriteLine("Count: {0}", AuthorList.Count);

     // Set Item value
     AuthorList["Mukesh"] = 20;

    // Get Item value
    Int16 age = Convert.ToInt16(AuthorList["Mukesh"]);

    // Get and display keys
    Dictionary<string, Int16>.KeyCollection keys = AuthorList.Keys;
    foreach (string key in keys)
    {
        Console.WriteLine("Key: {0}", key);
        Console.ReadLine();
   }

   // Get and display values
   Dictionary<string, Int16>.ValueCollection values = AuthorList.Values;
   foreach (Int16 val in values)
   {
      Console.WriteLine("Value: {0}", val);
      Console.ReadLine();
   }
}

you can also change the type of dictionary being created as

Dictionary<string, string> AuthorList = new Dictionary<string, string>();

Dictionary<string,float> AuthorList = new Dictionary<string, float>();

Thus you can easily create the dictionary and use it in your applications.

If you have any query feel free to ask.