How to use Dictionary Class in C# using Asp.Net

Dictionary Class in C#

C# Dictionary class  represent the key and pair values . set of pair values like key is a course means amount is a pair values.

This class is defined in the System.Collections.Generic namespace.

 Dictionary<string, int>;

Display Dictionary key and value   <string,int> using KeyValuePair

Code

 Dictionary<string, int> value = new Dictionary<string, int>();

        value.Add("Asp.Net",5999);

        value.Add("C#", 7999);

        value.Add("Jquery", 8999);

        value.Add("JavaScript", 7666);

        value.Add("VB.NET", 6999);

        foreach(KeyValuePair<string,int> val in value)

        {

            Response.Write(string.Format("{0},{1}",val.Key,val.Value)+"<br>");

   }

Code

Display Dictionary Key only   <string,int> using KeyValuePair

Dictionary<string, int> value = new Dictionary<string, int>();

        value.Add("Asp.Net",5999);

        value.Add("C#", 7999);

        value.Add("Jquery", 8999);

        value.Add("JavaScript", 7666);

        value.Add("VB.NET", 6999);

        foreach(KeyValuePair<string,int> val in value)

        {

            Response.Write(string.Format("{0}",val.Key+"<br>"));

        }

Code

Display Dictionary value   <string,int> using KeyValuePair

Dictionary<string, int> value = new Dictionary<string, int>();

        value.Add("Asp.Net",5999);

        value.Add("C#", 7999);

        value.Add("Jquery", 8999);

        value.Add("JavaScript", 7666);

        value.Add("VB.NET", 6999);

        foreach(KeyValuePair<string,int> val in value)

        {

            Response.Write(string.Format("{0}",val.Value+"<br>"));

        }

Code

Display Dictionary key  Contains key check from dictionary  1000 is check result is NO

Dictionary<string, int> value = new Dictionary<string, int>();

        value.Add("Asp.Net",5999);

        value.Add("C#", 7999);

        value.Add("Jquery", 8999);

        value.Add("JavaScript", 7666);

        value.Add("VB.NET", 6999);

        if (value.ContainsKey("1000") == true)

        {

            Response.Write("YES");

        }

        else

        {

            Response.Write("NO");

        }