'strange C# object initialization notation

Whilst working in a codebase I found a line of code that seemed to initialize an CustomObject (ObservableObject to be precise) as follows:

CustomObject someObject = {Prop1="1", Prop2="2", Prop3="3"}

where CustomObject has three string properties Prop1, Prop2, Propr3. The problem is that I have not been able to reproduce such an initialization in a sample project of my own. What is this notation called? To me it seems as though list notation is used to initialize a custom object...how is this possible? It's certainly not an anonymous type that is being created.

c++sharpnotation


Solution 1:[1]

What you are seeing is a default property settings construction of the class.

By default, you may see

var SomeObject = new SomeObjectClass();
SomeObject.Prop1 = "1";
SomeObject.Prop2 = "2";
SomeObject.Prop3 = "3";

By using the curly brackets does the implied same result. You are just stating... give me an instance of a given object, and by the way, please set the following properties to these default values I'm providing via...

var SomeObject = new SomeObjectClass{ 
                         SomeObject.Prop1 = "1",
                         SomeObject.Prop2 = "2",
                         SomeObject.Prop3 = "3" };

Now, in the sample context you have provided there is no "new" of a given class trying to be created.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 DRapp

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