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Live binding: reading okay, writing doesn't work - by: Kangni Liu

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Hi
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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