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11 wrz 2008 · Const and readonly are similar, but they are not exactly the same. A const field is a compile-time constant, meaning that that value can be computed at compile-time. A readonly field enables additional scenarios in which some code must be run during construction of the type.
12 maj 2021 · In C#, you can use a readonly keyword to declare a readonly variable. This readonly keyword shows that you can assign the variable only when you declare a variable or in a constructor of the same class in which it is declared.
11 sty 2024 · The readonly keyword is different from the const keyword. A const field can only be initialized at the declaration of the field. A readonly field can be assigned multiple times in the field declaration and in any constructor.
The difference between a constant and readonly variable in C# is that a constant is a fixed value for the whole class whereas readonly is a fixed value specific to an instance of a class and for each instance.
27 sty 2023 · Use readonly when the constant is a struct, a non-string, non-null class, cannot be determined at compile-time, or the constant is instance-level (instead of static). readonly is evaluated when the instance is created. A readonly member can hold a complex object by using the new keyword at initialization.
22 sie 2023 · If you want to ensure the immutability of an object or a complex data type, use readonly. In general, prefer readonly for more flexibility, especially when working with class-level members, and const for true constant values known at compile time.
15 sie 2023 · In this article, we will discuss the differences between const and readonly keywords in C#. const and readonly allow us to declare immutable values in C#.
