What is the difference between const and readonly in C#?

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Dotnetuncle's Tip:

A keyword 'delegate' is used to create a delegate. The caller calls this delegate, and in turn, the delegate invokes the target method. To do this, a method is assigned to the delegate variable.

What is the difference between const and readonly in C#?

When using the const keyword to set a constant variable, the value needs to be set at compile time. The const keyword may not be used with an object of reference type.

In case a reference type needs to be assigned a non-changeable value, it may be set as readonly

Protected Internal Array Sort Array Throw Multiple Catch Polymorphism Inheritance Session Viewstate Autogenerate ReadOnly Sealed Class Sealed Method Multiple Interfaces Overloading Overloaded Constructors Generics Main Case Sensitive Console Specifier Return Type SetCommandLineArgs System Environment New Default Values of Types Compiler Error Constant Variable Const Const - ReadOnly Parameter Modifier Out Ref Interface Interface Reference, is, as System.Collection

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Dotnetuncle's Tip: If you wish to create a custom type and instantiate it without the new keyword, then mark it as static. However, in such a case, only one instance of the class will be created and used across the application.