.NET Tips and Tricks

Blog archive

What's New in Visual Basic 14: Parameterless Constructors in Structures

While everyone using the .NET Framework creates Classes, not many developers create Structures. For those of you who are creating Structures, Visual Basic 14 has some good news for you: You can now give your structure a constructor that doesn't accept parameters (a default constructor). Formerly any constructor you added to a Structure had to accept at least one parameter.

Here's an example of a Structure with a default parameter:

Structure ProcessData
   Private ErrorCount As Integer
   Sub New()
      ErrorCount = -1
   End Sub
End Structure

If you want to have your default constructor actually execute, however, you must use the New keyword. This code will call the constructor and set ErrorCount to -1:

Dim pd As New ProcessData

This code will not:

Dim pd As ProcessData

and it will still run. Nifty, right?

Posted by Peter Vogel on 06/18/2015 at 10:21 AM


comments powered by Disqus

Featured

  • Xamarin.Forms 5 Preview Ships Ahead of .NET 6 Transition to MAUI

    Microsoft shipped a pre-release version of Xamarin.Forms 5 ahead of a planned transition to MAUI, which will take over beginning with the release of .NET 6 in November 2021.

  • ML.NET Improves Object Detection

    Microsoft improved the object detection capabilities of its ML.NET machine learning framework for .NET developers, adding the ability to train custom models with Model Builder in Visual Studio.

  • More Improvements for VS Code's New Python Language Server

    Microsoft announced more improvements for the new Python language server for Visual Studio Code, Pylance, specializing in rich type information.

  • Death of the Dev Machine?

    Here's a takeaway from this week's Ignite 2020 event: An advanced Azure cloud portends the death of the traditional, high-powered dev machine packed with computing, memory and storage components.

  • COVID-19 Is Ignite 2020's Elephant in the Room: 'Frankly, It Sucks'

    As in all things of our new reality, there was no escaping the drastic changes in routine caused by the COVID-19 pandemic during Microsoft's big Ignite 2020 developer/IT pro conference, this week shifted to an online-only event after drawing tens of thousands of in-person attendees in years past.

Upcoming Events