Dictionary Class

Hey Swati, A Dictionary is basically a part of the Generic Class... You can get a Dictionary class by using the System.Collection.Generic namespace. It basically allows you to keep data in it in key-value pair.

As I said, you can store data in key and value pair.... You have to define the type of value which you want to store in the Dictionary... This is a small example, which will help you to understand about Dictionary.

eg : 

class MyClass
{
        public static void Main()
        {
        Dictionary myDictionary = new Dictionary();
        myDictionary.Add("Value1",100);// Value1 is the Key and 100 is the value.
             myDictionary.Add("Value2",200); 
             myDictionary.Add("Value3",300); 
             myDictionary.Add("Value4",400);
 
 // Now, Will show you how to fetch a value from the Dictionary Object.
 
        // Way 1
        if(myDictionary.ContainsKey("Value1"))
        {
        int myFirstIntValue = myDictionary["Value1"];
        Console.WriteLine(myFirstIntValue);
        }

        // Way 2 - Using For-Each Loop
 foreach(KeyValuePair Value in myDictionary)
 {
        Console.WriteLine(Value.key,Value.value);
        }
 }
}

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