What is the Difference between Readonly and Const in C# ?

Published on December 25, 2013 by abundantcode

Filed under C#

Last modified December 25, 2013

Print this page

rate 1 star rate 2 star rate 3 star rate 4 star rate 5 star
Your rating: none, Average: 0 (0 votes)

This article have been viewed 3045 times

If you want to have a field whose value cannot be changed at runtime , you can use either const or readonly keyword .

What is the Difference between ReadOnly and Const in C# ?

The constant fields must be defined when declaring and cannot be changed at runtime . It is a implicitly static .

The read only field can be set when declaring it and additionally it can also be set in the constructor as well but nowhere else.

Below is code snippet demonstrating the usage of the ReadOnly and Const in C# .

public class StaticData
{
  private const string AbundantCodeConst =" Static Variable demonstration";
  private readonly string AbundantCodeReadOnly;
  public StaticData ()
  {
    AbundantCodeReadOnly = "ReadOnly demonstration";
    // AbundantCodeConst cannot be set later
    // AbundantCodeConst = "Test";
  }
}
If you enjoyed this post, please consider leaving a comment or subscribing to the RSS feed to have future articles delivered to your feed reader.

Leave a Comment


x

You might be Interested in these Posts

C# and Lambda - Finding all the elements of an integer array less than 35

Here's a sample code snippet demonstrating how to find all the elements of an integer array that is ...

C# and LINQ - Finding all the elements of an integer array less than 35

Here's a sample code snippet demonstrating how to find all the elements of an integer array that is ...

How to get the CommandLine of the Current Application in C# ?

You might need to get the information that contains the commandline which is used to execute the cur...