In C# you can create an instance like this:

Custom mycustomelement = new Custom { ElenentName = "My Custom Element" };

I wonder how I can create instance like this in Visual Basic and what this type of creating instance is called.

CodePudding user response：

It's called an object initializer, and the corresponding VB.NET syntax is:

Dim mycustomelement As New Custom With { .ElementName = "My Custom Element" }

(Note the dot (.) before the property name, which matches the syntax of VB's With statement.)

Note that there is a subtle difference between C# and VB when using the object initializer syntax for anonymous types: In C#, all properties are immutable; in VB, they are mutable unless they are initialized with the Key keyword.