The sort of an indexer and the kind of its parameters has to be at the very least as accessible as the indexer alone. For more info about accessibility degrees, see Entry Modifiers.
The signature of an indexer contains the quantity and kinds of its formal parameters. It will not include the indexer form or the names on the official parameters. Should you declare multiple indexer in exactly the same course, they must have diverse signatures.
as part of your style when its API models some collection. Your indexer is not necessary to map on to the gathering forms which have been part of the .
Established the accessibility on the get and established accessors to get as restrictive as is realistic. This is vital for that set accessor particularly. To find out more, see Restricting Accessor Accessibility.
The previous instance shows a browse / publish indexer. It consists of both of those the get and established accessors. You are able to determine go through only indexers as an expression bodied member, as demonstrated in the following illustrations:
Right here, we have outlined an indexer with return type T which suggests it may return any generic details variety. Also, we have made an instance with the EmployeeInfo class of variety int and string. Discover the code,
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You are able to use Practically anything you acquired from working with properties to indexers. The sole exception to that rule is instantly carried out Homes
The following case in point displays a category that generates values for the Mandelbrot set. For more info about the mathematics guiding the set, examine this informative article. The indexer uses two doubles to outline a point from the X, Y plane. The get accessor computes the quantity of iterations till a degree is determined being not within the established.
The subsequent case in point defines a generic class with get and set accessor ways to assign and retrieve values.
It is possible to build indexers that use numerous arguments. Furthermore, People arguments usually are not constrained to indexer be exactly the same sort.
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when circumstances of a category or struct might be indexed like an array or other collection. The indexed benefit could be set or retrieved devoid of explicitly specifying a type or occasion member. Indexers resemble Homes except that their accessors just take parameters.
It's also possible to put the error dealing with code In the indexer itself. Be sure you doc for users any exceptions which you toss inside of an indexer accessor.
This method ensures that all temperature data for just a specified working day is taken care of constantly, regardless of the time component.
Moreover, in the event you add your individual Merchandise property to an item with the indexer, you will get a CS0102 compiler error. To avoid this mistake, use the IndexerNameAttribute rename the indexer as in-depth later on in this article.
C# isn't going to Restrict the indexer parameter style to integer. As an example, it could be useful to utilize a string by having an indexer.
get // return the value from the specified index of an inside selection established // established values at the specified index in an inner assortment