Hi,

Thank you for your answer. Now the program is built with no errors. However, when I run my project in debug mode, I get this exception.
The variable MyFindValueAfter is a string. Don't know why EasyOPC crashes on this variable...

System.TypeInitializationException
HResult=0x80131534
Message=The type initializer for 'OpcLabs.EasyOpc.DataAccess.Forms.Browsing.DADialog' threw an exception.
Source=OpcLabs.EasyOpcForms
StackTrace:
at OpcLabs.EasyOpc.DataAccess.Forms.Browsing.DADialog..ctor()
at OpcLabs.EasyOpc.DataAccess.Forms.Browsing.DAItemDialog..ctor(IContainer container)
at EBO_Browse.Form1.InitializeComponent() in \MyBin\Proj-VS2017\EBO-OPC Client\Configuration(4)\Form1.Designer.vb:line 107
at EBO_Browse.Form1..ctor() in \MyBin\Proj-VS2017\EBO-OPC Client\Configuration(4)\Form1.vb:line 34

Inner Exception 1:
FileLoadException: Could not load file or assembly 'System.Runtime.CompilerServices.Unsafe, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Inner Exception 2:
FileLoadException: Could not load file or assembly 'System.Runtime.CompilerServices.Unsafe, Version=4.0.4.1, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)



Please advise.

Thank you.

Michael

Hello.

I will answer this, but similarly with many other questions and issues you have, these have nothing to do with our product specifically. It is a general knowledge for which you should seek advice elsewhere.

The instructions tailored specifically to QuickOPC are here: opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2...es%20in%20Visual%20Studio.html

There may be differences that depend on Visual Studio version/revision and its configuration.

Regards

Hi,

Thank you for your answer. I have removed all QuickOPC assemblies.
I have downloaded the 2 files:
opclabs.quickopc.5.71.334.nupkg
opclabs.quickopc.forms.5.71.334.nupkg

Can you please explain how do I add Package References to these files?

Thank you.

Michael

Michail.

Your project file is completely wrong, in terms of referencing the QuickOPC product.

There are two basic problems:

1) It references wrong version (5.63)
2) It uses assembly references instead of Package (NuGet) references.

You need to:

1. In Visual Studio, remove ALL references to QuickOPC assemblies.
2. Then in Visual Studio, add Package References to OpcLabs.QuickOpc and OpcLabs.QuickOpc.Forms , version 5.71, from www.nuget.org .

Regards
Zbynek Zahradnik

Hi,

I think I made some progress. Now I only have build errors. See the screen capture below.
I get the following errors:

1.
Severity Code Description Project File Line Source Suppression State
Error BC30002 Type 'DAVtq' is not defined. EBO_Browse \MyBin\Proj-VS2017\EBO-OPC Client\Configuration(4,66)\Form1.vb 1 Build N/A


2. DANodeDescriptor is undefined

3. DaItemDialog1 is undefined

I appreciate your help.

Thanks

Hello.

There is nothing specific in QuickOPC in relation to package upgrades.
For this reason, there are no guides to do that. In principle the problem is with the tooling (Microsoft).

You can post here (or email to me, if privacy is a concern) the *.vbproj files, I will check if the package references in them are correct. They are there in XML, visible, anyway.

Regards

Hi,

I followed your instructions but got other errors....

Do you have a step-by-step guide that explains how to switch from version 2021.1 VB.net project to version 2023.1?

Thank you.

Michael

Upgrading NuGet packages is tricky in Visual Studio. It commonly fails to operate properly.

I suggest to make a backup copy of the solution, then do Clean on the solution, exit Visual Studio, remove all ".vs" hidden folders, restart Visual Studio, check that Package References are referencing the right versions of QuickOPC, and that you have also upgraded the OpcLabs.QuickOpc.Forms package.

Regards

Hi,

After upgrading to version 2023.1 , when building the application I am getting this error:

Severity Code Description Project File Line Source Suppression State
Error BC30002 Type 'OpcLabs.EasyOpc.DataAccess.Forms.Browsing.DAItemDialog' is not defined.
EBO_Browse \MyBin\Proj-VS2017\EBO-OPC Client\Configuration(3,40)\Form1.Designer.vb 1 Build N/A


Any idea why?

Thank you.
Michael