A Simple Key For properties Unveiled

A Simple Key For properties Unveiled

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The above code contains a bug although. If code updates the value of possibly the FirstName or LastName residence, the Earlier evaluated fullName discipline is invalid. You modify the set accessors with the FirstName and LastName residence so that the fullName field is calculated once more:

The preceding illustration necessitates callers to use the constructor that features the FirstName parameter. Callers won't be able to use object initializers to assign a value on the home. To assistance initializers, you can also make the set accessor an init accessor, as shown in the next code:

Basic properties that involve no custom made accessor code can be carried out possibly as expression overall body definitions or as car-implemented properties.

One simple sample for implementing a assets consists of making use of A personal backing discipline for environment and retrieving the assets value. The get accessor returns the worth from the non-public discipline, along with the set accessor may possibly complete some info validation right before assigning a price into the private subject.

Now, the FirstName residence is often accessed from any code, nonetheless it can only be assigned from other code in the Person course.

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You are able to produce code while in the established properties accessor to ensure that the values represented by a home are always valid. By way of example, suppose one particular rule for the Person course would be that the title cannot be blank or white Place. You'll write that as follows:

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Assets accessors generally include one-line statements that just assign or return the results of an expression.

The subsequent case in point illustrates this pattern. In this instance, the TimePeriod class signifies an interval of your time. Internally, the class stores the time interval in seconds in A non-public field named _seconds. A go through-write property named Several hours lets the customer to specify enough time interval in several hours.

This last Edition evaluates the FullName assets only when wanted. In the event the Beforehand calculated Variation is valid, It is really employed. If Yet another state transform invalidates the previously calculated Variation, It will likely be recalculated.

Properties help a category to expose a public means of having and setting values, though hiding implementation or verification code.

Callers should either make use of the constructor with SetsRequiredMembers or set the FirstName home employing an object initializer, as shown in the following code: