Professional OPC
Development Tools

logos

Online Forums

Technical support is provided through Support Forums below. Anybody can view them; you need to Register/Login to our site (see links in upper right corner) in order to Post questions. You do not have to be a licensed user of our product.

Please read Rules for forum posts before reporting your issue or asking a question. OPC Labs team is actively monitoring the forums, and replies as soon as possible. Various technical information can also be found in our Knowledge Base. For your convenience, we have also assembled a Frequently Asked Questions page.

Do not use the Contact page for technical issues.

Use of EasyDaClient hangs application

More
27 Jan 2021 08:58 #9365 by support
In most or all cases, similar problems have been caused by the BoxedApp library we are using. It can be disabled: kb.opclabs.com/How_to_disable_prerequisites_boxing . Because the precise settings depend on the QuickOPC version, I suggest that you use the "universal", combined settings file that is at the bottom of the article.

In fact, there is a chance that disabling the BoxedApp would help with the current version as well. I would be interested to know you results.

Best regards

Please Log in or Create an account to join the conversation.

More
26 Jan 2021 21:35 #9363 by saratalley
Yes, I'm running the application from VS when it hangs. I will test if it hangs when running the compiled executable. Can I get the workaround for Windows 10.

Thanks.

Please Log in or Create an account to join the conversation.

More
24 Jan 2021 20:23 #9356 by support
Hello,
yes, older QuickOPC versions had issues on newer Windows 10 versions, although there is a workaround (let me know if you need it).

Regarding the current problem, are you running your program from Visual Studio when it hangs? If so, can you first check whether it also hangs if you start the compiled executable e.g. from the File Explorer?

Best regards
Z.

Please Log in or Create an account to join the conversation.

More
24 Jan 2021 00:38 #9355 by saratalley
I have Windows version 20H2, when I tried to run a previously written application that used the EasyDaClient 2018.3 Visual Studio would randomly crash with no indication of the what the problem might be, other than "sometimes" a user access violation occurred message would be displayed - please note I did NOT try to run this application as the problem I was trying to fix was resolved using a computer with an older windows version. I was finally able to conclude that for my development machine I needed the 2020 version of QuickOPC that would support the version of windows I am using and VS no longer crashes on opening. However, now when I try to run my application it hangs if EasyDaClient is added to the solution. I did have the reference to version 5.59.492, but removed that and updated to 5.59.1034, but the application continues to hang if I add an EasyDaClient control, either to the form or dynamically via code. I have gone through my code and commented out line by line, and the EasyDaClient is the only portion that causes the application to hang. There are no error messages/output that I have been able to find and no exceptions thrown. The application just becomes unresponsive.

Please Log in or Create an account to join the conversation.

Moderators: support
Time to create page: 0.170 seconds