What are the benefits to marking a field as `readonly` in C#?

The readonly keyword is used to declare a member variable a constant, but allows the value to be calculated at runtime. This differs from a constant declared with the const modifier, which must have its value set at compile time. Using readonly you can set the value of the field either in the declaration, or in the constructor of the object that the field is a member of.

Also use it if you don’t want to have to recompile external DLLs that reference the constant (since it gets replaced at compile time).

Related Posts:

  1. .Net 4.8 Support for Windows 10 ends in 26 days?
  2. What is a NullReferenceException, and how do I fix it?
  3. How do I get a random YouTube video with the YouTube API?
  4. What is a NullReferenceException, and how do I fix it?
  5. Unexplained crashes related to ntdll.dll
  6. I am getting Failed to load resource: net::ERR_BLOCKED_BY_CLIENT with Google chrome
  7. CS0120: An object reference is required for the nonstatic field, method, or property ‘foo’
  8. What is the difference between declarative and imperative paradigm in programming?
  9. Group by in LINQ
  10. Priority queue in .Net
  11. What is the difference between int, Int16, Int32 and Int64?
  12. Adding values to a C# array
  13. How can I add ” character to a multi line string declaration in C#?
  14. Input string was not in a correct format
  15. The request was aborted: Could not create SSL/TLS secure channel
  16. Unable to connect to web server ‘IIS Express’
  17. Twilio TwilioRestClient does not contain a definition for SendSmsMessage
  18. How to convert byte array to string
  19. ASP.NET Core Dependency Injection error: Unable to resolve service for type while attempting to activate
  20. System.web.mvc missing
  21. Nullable object must have a value?
  22. Sequence contains no elements?
  23. Compiler Error Message: The compiler failed with error code -2146232576
  24. Best way to generate a random float in C#
  25. Check if list is empty in C#
  26. What is clr.dll on .Net framework and what does it do?
  27. How can I secure passwords stored inside web.config?
  28. Visual Studio says “Method must have a return type”
  29. How to Use TextureBrush for painting an Image
  30. How to Use TextureBrush for painting an Image
  31. C# compiler error: “not all code paths return a value”
  32. Can’t use System.Windows.Forms
  33. How do I read and parse an XML file in C#?
  34. How to fix “namespace x already contains a definition for x” error? Happened after converting to VS2010
  35. How do I create a Shared Code project (.shproj)
  36. OnCollisionEnter2D not being executed?
  37. The calling thread cannot access this object because a different thread owns it
  38. Convert JSON String To C# Object
  39. How can I fix Visual Studio 2015 exception Microsoft.vshup.server.httphostx64.exe has stopped working when run project
  40. IEnumerable vs List – What to Use? How do they work?
  41. How to convert code from C# to PHP
  42. Merge two (or more) lists into one, in C# .NET
  43. Index was out of range. Must be non-negative and less than the size of the collection parameter name:index
  44. Is dependency injection useful in C++
  45. Parse Json string in C#
  46. System.BadImageFormatException: Could not load file or assembly
  47. Could not load file or assembly ‘Microsoft.Web.Infrastructure,
  48. Where to place native DLL to use Pocket PC emulator?
  49. What is the purpose of the vshost.exe file?
  50. System.ComponentModel.Win32Exception: Access is denied Error
  51. num1 >= 0x80 – What is 0x80?
  52. Excel “External table is not in the expected format.”
  53. There is already an open DataReader associated with this Command which must be closed first
  54. MSSQL Error ‘The underlying provider failed on Open’
  55. An object reference is required to access a non-static member
  56. Task vs Thread differences
  57. There is no ViewData item of type ‘IEnumerable‘ that has the key country
  58. C# – Rounding Down to Nearest Integer
  59. How to update the value stored in Dictionary in C#?
  60. How to write a comment in a Razor view?
  61. Finalize vs Dispose
  62. How to download a file from a URL in C#?
  63. Calculate a MD5 hash from a string
  64. How to pass data (and references) between scenes in Unity
  65. The model item passed into the dictionary is of type .. but this dictionary requires a model item of type
  66. Constructor of an abstract class in C#
  67. How can I get the active screen dimensions?
  68. WebException (Status: Protocol Error)
  69. How to add a new row to datagridview programmatically
  70. Unexpected character encountered while parsing value
  71. Embedded statement cannot be a declaration or labeled statement
  72. MailMessage.To.Add() throwing exception : “An invalid character was found in the mail header: ‘,’.”
  73. Remove duplicates from a List in C#
  74. How to deserialize xml to object [duplicate]
  75. How can we prepend strings with StringBuilder?
  76. C# conditional operator error Only assignment, call, increment, decrement, await, and new object expressions can be used as a statement
  77. How to properly make a http web GET request
  78. Strip double quotes from a string in .NET
  79. Simulating Key Press C#
  80. No overload for method ” takes 1 argument
  81. Cannot drop database because it is currently in use
  82. Best way to “push” into C# array
  83. Troubleshooting “program does not contain a static ‘Main’ method” when it clearly does…?
  84. Unity 5.2.2 changing Visual Studio back to MonoDevelop
  85. Using FolderBrowserDialog in WPF application
  86. How to make Check Box List in ASP.Net MVC
  87. Is there an equivalent to the C# “var” keyword in C++/CLI?
  88. The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required?
  89. Quickest way to compare two generic lists for differences
  90. What is the easiest way to encrypt a password when I save it to the registry?
  91. LINQ query on a DataTable
  92. Best way to randomize an array with .NET
  93. Encrypt and decrypt a string in C#?
  94. Key Value Pair List
  95. Using .Select and .Where in a single LINQ statement
  96. How to resize an Image C#
  97. Unrecognized escape sequence for path string containing backslashes
  98. C# Dictionary get item by index
  99. Memory Leak caused by System.Drawing.Internal.GPStream
  100. A field initializer cannot reference the nonstatic field, method, or property

Leave a Comment