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

  1. using System;
  3. public class Program
  4. {
  5. public static void Main()
  6. {
  7. var result1 = 5;
  8. //result1 ="Hello World!!"; implicitly convert type 'string' to 'int'
  10. dynamic result2 = 6;
  12. result2 = "Welcome to C# Corner";
  14. Console.WriteLine(result1);// var keyword output
  16. Console.WriteLine(result2);// dynamic keyword output
  17. }
  18. }
Output
5
Welcome to C# Corner

Demo : https://dotnetfiddle.net/PHCM3m