But there is A different, more delicate difference that we should always be familiar with. If a const variable exists in Assembly A and it is Utilized in Assembly B, when Assembly A will get recompiled using a new benefit for your const variable Assembly B will nonetheless possess the prior
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At the outset glance this Appears lots like a constant subject, considering the fact that a constant can only be specified a value at its declaration and cannot have that value changed anyplace else. The difference lies in the details.
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This means that a readonly variable may have distinctive values for different constructors in the same class.
Use const when the value is complete constant that won’t modify in excess of enough time. Such as Quantity of days in every week is seven. This is often constant. and when unsure use static readonly to steer clear of the dll versioning trouble.
Also does the fifth row in the initial desk suggest that readonly fields can only be of primitive kinds too?
Just past 7 days I'd a different-to-ASP.Web developer (we'll contact him Roger) inquire me to elucidate what the difference was between a variable declared as const variable and that same variable declared as static readonly.
Even so, Regardless that they keep their values for The full life time of This system C# Programming they are inaccessible outdoors the code block These are in
As significantly I am mindful, this value is going to be worldwide for all users, but the value just isn't guaranteed to exist because of the application pool recycling and the worth just isn't assigned on recycle?
So Sure, the code inside your last example is valid, because you are handed within an occasion. On the other hand, you could possibly not do:
Now we get back to your question Roger initially questioned: what's the distinction between a variable declared as const and exactly the same variable declared as static readonly?
All examples are compiled and analyzed on Visual Studio. These illustrations is often as simple and standard as “Hi there Earth” system to exceptionally hard and advanced C# packages. So, They're suited to any user (dummies, rookies or Superior buyers).