properties for Dummies

The above code contains a bug even though. If code updates the value of both the FirstName or LastName home, the Formerly evaluated fullName discipline is invalid. You modify the established accessors of the FirstName and LastName home so that the fullName area is calculated all over again:

The preceding case in point requires callers to use the constructor that includes the FirstName parameter. Callers can't use object initializers to assign a worth to the property. To help initializers, you can make the established accessor an init accessor, as proven in the following code:

The preceding code can make two additions to the Person class. 1st, the FirstName house declaration features the expected modifier. Which means any code that makes a fresh Particular person must established this house.

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From time to time, you should initialize a residence to a value in addition to the default for its form. C# permits that by setting a value following the closing brace for the residence.

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You can put into practice these properties as expression-bodied members. Expression physique definitions encompass the => symbol accompanied by the expression to assign to or retrieve from the residence.

It is also lawful to position the more restrictive modifier within the get accessor. For example, you could have a general public home, but prohibit the get accessor to personal. That scenario is rarely completed in practice.

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The next example illustrates this sample. In this example, the TimePeriod course signifies an interval of your time. Internally, the class merchants time interval in seconds in A non-public area named _seconds. A browse-publish house named Hours will allow The client to specify the time interval in hrs.

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The preceding case in point lets a caller to produce a Person using the default properties constructor, even if that code will not set the FirstName home. Commencing in C# 11, you could require

A property can be a member that provides a flexible mechanism to browse, generate, or compute the value of A non-public area. Properties can be employed as if they're public info users, but they're Specific methods identified as accessors

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