Read-Only Fields

Read-Only fields

Read-only fields represent object data that is set and never changed for the lifetime of the object.
  • A variable in a class, A read-only is a variable defined in a class.  
  • holds a value that is initialized and then not changed.
  • Must be initialized, in the declaration, or in a constructor
  • Think of a read-only field as a runtime constant value.

Read-only fields syntax

  • Optional accessibility modifier, start with optionally accessibility modifier, in many cases, read-only fields are publicly accessible to the application.
  • optional static keyword
  • Readonly keyword
  • Data type, any data type can be specified.
  • Field name, PasclCasing
  • Assigned to a value, must be initialized to a value, it can be in the declaration time.

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