Namespaces in .NET Assemblies

The types in QuickOPC and OPC Wizard class libraries are organized in namespaces. Each namespace contains types that you can use in your program: classes, structures, enumerations, delegates, and interfaces.

All our namespaces begin with OpcLabs name.

Although namespaces are .NET concept, with Connectivity Software you will encounter them also when working from COM tools or Python, because Connectivity Software builds its COM and Python support on top of the .NET assemblies.

In COM, the namespace precedes the actual type name in the objects's ProgID. In Python, namespaces are made to behave like Python module names.

Connectivity Software defines types mainly in namespaces described in tables under the links below.

You can use symbols contained in the namespaces by using their fully qualified name, such as OpcLabs.EasyOpc.DataAccess.EasyDAClient. In order to save typing and achieve more readable code, you will typically instruct your compiler to make the namespaces you use often available without explicit reference. To do so:

In Visual Basic (VB.NET), place the corresponding Imports statements at the beginning of your code files.
In Visual C#, place the corresponding using directives at the beginning of your code files.
In Visual C++, place the corresponding using namespace directives at the beginning of your code files.
In Visual F#, place the corresponding open directives at the beginning of your code files.
In PowerShell, place the corresponding using namespace directives to your script files.
In Python, place the corresponding from AssemblyName import * statements in your code after importing the Python packages.

The features discussed here, or some of them, may not be available in all editions of the product. Check the QuickOPC Product Editions page for differences between the editions. The trial license has all features enabled (and is limited in period for which it provides valid data), but licenses for specific commercial editions may have functionality limitations.

Sparkplug is a trademark of Eclipse Foundation, Inc. "MQTT" is a trademark of the OASIS Open standards consortium. Other related terms are trademarks of their respective owners. Any use of these terms on this site is for descriptive purposes only and does not imply any sponsorship, endorsement or affiliation.

Introduction

Licensing in Visual Studio

Fundamentals

NuGet Package Referencing with Visual Studio Toolbox

Programming in PowerShell

Referencing the NuGet Packages (.NET)