Menu
I like the C# 3 initializer syntax and use it a lot, but today while looking in Reflector, the following came up:
var binding = new WSHttpBinding { ReaderQuotas = { MaxArrayLength = 100000 }, MaxReceivedMessageSize = 10485760 }; At first I thought it was a mistake, but it does compile! Guess I am still learning new stuff all the time. :)
From what I can tell, it sets the MaxArrayLength property of the ReaderQuotas property of the WSHttpBinding.
Does this syntax create a new ReaderQuotas object and then set the property, or does it assume the property to be initialized already? Is this the general way one would use to initialize 'child' properties?
I do find the syntax a bit confusing...
240
C# - Object Initializer Syntax NET 3.5) introduced Object Initializer Syntax, a new way to initialize an object of a class or collection. Object initializers allow you to assign values to the fields or properties at the time of creating an object without invoking a constructor. Example: Object Initializer Syntax.
The object initializers syntax allows you to create an instance, and after that it assigns the newly created object, with its assigned properties, to the variable in the assignment. Starting with C# 6, object initializers can set indexers, in addition to assigning fields and properties.
The initializer list is used to directly initialize data members of a class. An initializer list starts after the constructor name and its parameters.
Type Initializers are a new language construct that allow for C# (and VB using similar syntax) to shortcut creating of custom constructors or writing additional code to initialize properties.
No, that doesn't create new objects unless you use = new SomeType {...}:
var binding = new WSHttpBinding { ReaderQuotas = new XmlDictionaryReaderQuotas { MaxArrayLength = 100000 }, MaxReceivedMessageSize = 10485760 }; Your example shows the initializer syntax for setting properties of existing sub-objects. There is also a similar syntax for calling "Add" methods on collections.
Your code is broadly comparable to:
var binding = new WSHttpBinding(); binding.ReaderQuotas.MaxArrayLength = 100000; binding.MaxReceivedMessageSize = 10485760; If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
