Search code examples
.netvb.netclasspropertiesinstance

What is VB.NET equivalent of this way to create instance?

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.

Solution

  • 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.