Yes, there are some additional requirements if you want to run on a different machine where QuickOPC has not been yet installed. For first tests, you can simply install it using the default settings on the new machine, that should resolve the TypeInitializationException.

In order to do this "right", study the Concepts document that is installed with the product (or is here: www.opclabs.com/download/file/181-concepts-quickopc ), and follow the instructions in the "Application Deployment" section.

Best regards

The objects and methods provided by QuickOPC do not really care which OPC server(s) you connect to. In order to connect to any OPC server, you need to know 1) the computer it resides on, 2) the identification (usually, a ProgID) of the server. You may then need additional info (such as ItemID) to actually obtain the data.

Most QuickOPC methods take the first parameter as machine name, as second parameter as the ProgID of the server. You can therefore take the code from the examples, and modify it to connect to a different computer, and a different server.

Also, the methods of QuickOPC are not limited to work with just a single OPC server. You can freely mix calls and refer to multiple different servers; it will just work.

The QuickOPC methods give you the ability to access the data (reading, writing, subscriptions). You can also explore "what's in there" by using the browsing methods. All the OPC stuff is hidden inside the component. You need to write the code "around it" that does whatever your application is supposed to do with the data.

Best regards

Hello,

I was assuming you are using QuickOPC 5.30.

In QuickOPC 5.23, open the other solution – the one that does not say “VS 2010+ Only”.

Best regards,

Hello,
Thanks alot for your reply.
I have installed "QuickOPC 5.23.exe" but as i have clicked on Visual C# Examples going through following path (see image 1). I Clicked on Visual C# Examples (VS2010 + Only). Though this opens a project in VS 2010 but there is no Web Directory( See Image 2). You can see There is only Console directory, no Web.

Hello.

Here is what I suggest you do:

1. Download and install QuickOPC (www.opclabs.com/downloads ). It’s a free trial.
2. In the Windows Start menu, locate the OPC Labs - QuickOPC submenu, and then select Examples (Source Code) -> Visual C# Examples. It will open a Visual Studio solution with the examples.
3. There are projects for various technologies in this solution. What you need to look at are the projects under the “Web” folder – they deal with ASP.NET.

When you install QuickOPC, it will also install a “test” (simulation) OPC server of ours. This is the server all our examples connect to, and you can use it to develop your application as well.

Please feel free to ask any additional questions.

Would it be OK if I put our conversation (anonymized) to our Online Forums, so that others can benefit from it as well, and we continue it there?

Best regards,

Hello,
No problem.

Let’s first clarify what you are trying to achieve.

Is it my correct understanding that
1. You already have (or there will be) an OPC Server that provides the data. Do you know which server it is, and/or at least which OPC specifications it supports? (OPC-DA, A&E, Unified Architecture?)
Re- Right now, We don't have server, but our client has. But for testing purpose in development we want to have any simulator kind of thing which gives us the values say , dummy server


2. You want to write an ASP.NET 4.0 application that connects to the OPC Server (i.e. the application is an OPC client)?
Re- Exactly we want to develop OPC Client using .Net 4.0 using that dummy server setup.


Thank you

From: A.
Sent: Wednesday, February 19, 2014 1:35 PM
To: Zbynek Zahradnik
Subject: Re: QuickOPC Download Form - ...

Hello,
I am sorry to say, but i am totally new in this. I need your help . First of all i would like to know how installation file i need to download it for server. and how can my applicatoin , developed in ASP.NET 4.0 . communicates with Server.

Please help me with this.