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Live binding: reading okay, writing doesn't work

17 Jun 2021 18:14 #9787 by support

You also need to set the WriteEventSource.SourceComponent.

I suggest that you run the WpfLiveBindingDemo project included with the product, switch to the Writing tab, and then test out the controls in the "Subscribe & Write" group. Also, click on the "How?" link in the same group, and the box at the bottom of the form will show instructions on how it was configured. You can also study the generated source code.

Best regards
The following user(s) said Thank You: alu

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17 Jun 2021 17:09 #9785 by Kangni Liu
I am trying to do livingbinding on a wpf application, with the 2021 OPC da. I have given all read&write&subscribe access to the variables and they can read and update correctly.

However, I am not able to do any writings to the checkboxes or sliders. The checkboxes are checked and unchecked but opcclient receives no commands. Why is that? I have to manually send OPC commands through EasyDAClients& WriteItemValue etc.

There is nothing special I did to the usercontrols, I simply create a checkbox, right click it, and bind to point.

Thank you in advance.

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