properties - An Overview

properties - An Overview

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Field characteristics is often attached to the compiler created backing area in auto-applied properties. For example, consider a revision to the Person course that provides a singular integer Id house. You create the Id home working with an automobile-carried out assets, but your design and style isn't going to demand persisting the Id home.

A get property accessor is used to return the assets price, as well as a established house accessor is accustomed to assign a different value.

The preceding code makes two additions to the individual class. First, the FirstName assets declaration includes the required modifier. That means any code that makes a whole new Particular person should established this house.

Both equally the get plus the established accessor is often implemented as expression-bodied users. In cases like this, the get and established keywords needs to be present. The following illustration illustrates using expression physique definitions for equally accessors. The return search term isn't really made use of Together with the get accessor.

That is the basics of your syntax. You will find numerous versions that aid various different design idioms. Let's check out, and understand the syntax choices for Each and every.

If a house has both equally a get and also a set (or a get and an init) accessor, equally have to be car-carried out. You determine an vehicle-applied residence by utilizing the get and established search phrases with out delivering any implementation.

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It is also lawful to position the more restrictive modifier to the get accessor. For example, you might have a general public property, but restrict the get accessor to personal. That circumstance is rarely carried out in follow.

You could lengthen this very same syntax to just about anything essential within your situation. You may check the interactions among unique properties, or validate versus any exterior ailments. Any valid C# statements are legitimate inside of a residence accessor.

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The next example illustrates this sample. In this example, the TimePeriod course represents an interval of your time. Internally, The category stores some time interval in seconds in A personal discipline named _seconds. A go through-compose home named Hrs allows The client to specify time interval in hours.

This final Edition evaluates the FullName house only when essential. If the previously calculated Model is valid, It is employed. If another condition alter invalidates the Earlier calculated version, It will probably be recalculated.

You could choose the Preliminary properties price for the FirstName assets to become the vacant string as an alternative to null. You'd specify that as shown underneath:

This technique performs for just about any attribute you connect for the backing field over the vehicle-implemented house.