Difference between var & dynamic keyword in C#

Introduction

 

This blog describes the Difference between var & dynamic keyword in C#.

 

var

• Statically typed - var type of variables are required to be initialized at the time of declaration. Once assigned a value into var type then it act as that data type like int,string,etc. So after that we can't able to change variable datatype.

dynamic

• Dynamically typed - Dynamically we can change the variable type like int,string,etc. That means the variable type declared at runtime.

Code

using System;

public class Program
{
    public static void Main()
    {
        var result1 = 5;
        //result1 ="Hello World!!"; implicitly convert type 'string' to 'int'

        dynamic result2 = 6;

        result2 = "Welcome to C# Corner";

        Console.WriteLine(result1);// var keyword output

        Console.WriteLine(result2);// dynamic keyword output
    }
}

Output

 

5
Welcome to C# Corner 

Demo : https://dotnetfiddle.net/PHCM3m