Hello.

The license key can be installed into the registry (e.g. using the License Manager utility), or embedded as a resource into your application (in newest version, also just placed as a file on the disk in a specified directory)..
This is all described in the User's Guide:  opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Late...html#Licensing%20Elements.html .

I will send you an evaluation license key, valid for 30 days, to the email address you used to register with the Forums.

Best regards
 

Thank you,  I will keep on the latest .net 9, so we can also have support when we buy new license.  Do you have any guide on how to properly register QuickOPC License on WebAPI .Net project.  Can you provide any evaluation license for Quick OPC 5.82 with steps on how to set it up on web api project. 
 

Each version of our software has an associated supported .NET runtime, OS versions, etc. You can view it here:  kb.opclabs.com/QuickOPC_Versions .

From this table, you can see that the latest version that supported .NET 6 was QuickOPC 2024.2 (5.81). You can still download it, and it will work either with newer commercial license, or with an evaluation license key that I can send to you, free of charge. BUT the fact that this version supports .NET 6 does not mean that WE will support you in case of problems, especially those that can have to do with an unsupported .NET runtime. We do not officially support older versions. So you risk being on your own in such case.

Best regards
 

Thank you, It works on .net 8.
But since we using .Net 6  you dont have QUICKOPC package that works with this version and also able to BrowseNodes and Tags?

Hello.

This is a weird error, so at this point I cannot be 100% sure about its cause. But it can be related to the fact that you are using .NET 6.
.NET 6 is no longer supported (neither by Microsoft nor by us). I suggest that you upgrade to .NET 8 or .NET 9, which are the supported runtimes in the latest version.

Best regards
 

Here is an  error after upgrading  im using Web API .net 6

System.TypeLoadException: Method 'GetType' in type 'OpcLabs.BaseLib.Exception2' from assembly 'OpcLabs.BaseLib, Version=5.82.423.1, Culture=neutral, PublicKeyToken=6faddca41dacb409' does not have an implementation. at dtm_backend_api.Controllers.DtmLibSrcProcessTagsController.GetOpcTags(Int64 sourceConnectorId) at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine) at dtm_backend_api.Controllers.DtmLibSrcProcessTagsController.GetOpcTags(Int64 sourceConnectorId) at lambda_method9(Closure , Object , Object[] ) at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.AwaitableObjectResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments) at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeActionMethodAsync>g__Awaited|12_0(ControllerActionInvoker invoker, ValueTask`1 actionResultValueTask) at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeNextActionFilterAsync>g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context) at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeInnerFilterAsync() --- End of stack trace from previous location --- at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeFilterPipelineAsync>g__Awaited|20_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope) at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger) at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context) at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext) at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider) at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext) at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider) at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context) HEADERS ======= Accept: text/plain Host: localhost:7246 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36 :method: GET Accept-Encoding: gzip, deflate, br, zstd Accept-Language: en-US,en;q=0.9 Referer: https://localhost:7246/swagger/index.html sec-ch-ua-platform: "Windows" sec-ch-ua: "Google Chrome";v="141", "Not?A_Brand";v="8", "Chromium";v="141" sec-ch-ua-mobile: ?0 sec-fetch-site: same-origin sec-fetch-mode: cors sec-fetch-dest: empty priority: u=1, i


Error occur on this lines
 var daClient = new EasyDAClient();
 var daElements = daClient.BrowseLeaves(opcUrl, "");




 

My suggestion is as follows:

Use the latest version - which is 5.82, currently.

If it does not work, send me the error you are getting *with that version*.

Best regards

 

I want to test browsing of Tag and Nodes in .Net,  I tried QuickOPC 5.8 didnt work ,then i lowered the version still didnt work.

 

You wrote that you wanted to test the latest version. But the version you are running is 5.70, from November 2022.

So do you want to test version from November 2022, or do you actually want to test the latest version?

Bets regards
 

Hi , not really, im trying to browse nodes and tags i get this error.

{ "message": "Failed to browse UA OPC Server: Not allowed to run by the license \"Multipurpose\". You might be running a trial license, and the version of the software you are using is obsolete. To resolve this problem, a) obtain a recent version, or b) ask for an evaluation license key, or c) install a license valid for the current version.\r\nProduct information follows. Component name: \"QuickOPC\", license IDs: \"Multipurpose\", version number: 570, release date: 2022/12/02, trial validity: 397 days, option expression: \"EasyDAClient\".\r\nContext: 0 dropped license(s).", "success": false, "statusCode": 400, "result": null }