Const vs Static vs Readonly in C#

Const

Constant fields are the fields that cannot be modified. At the time of declaration, you need to assign a value to it.

const int a = 5;

Static

If the static modifier is applied to a class then you cannot instantiate the class using the new keyword. You can use the static keyword on methods, properties, classes, constructors, etc.

static int a = 10;

Readonly

A Readonly field is initialized at the time of declaration or you can also set it within the constructor.

Let us see an example in which the readonly field is initialized inside the constructor.

Example

class Demo {
   readonly int a;
   public Demo( ) {
      a = 5;
   }
}

Karthikeya Boyini

Published on 17-Sep-2018 13:13:18

• Related Questions & Answers
• enum vs. const vs. #define in C/C++
• "static const" vs "#define" vs "enum" ?
• Const vs Let in JavaScript.
• Static vs. Non-Static method in C#
• Compare define() vs const in PHP
• static keyword in C++ vs Java
• Static binding vs Dynamic binding in C#
• Static Testing Vs Dynamic Testing
• Static vs Dynamic Binding in Java
• C++ vs C++0x vs C++11 vs C++98
• Virtual vs Sealed vs New vs Abstract in C#
• C++ vs Java vs Python?
• Difference between readonly and const keyword in C#
• Class method vs static method in Python
• Static methods vs Instance methods in Java