QuickOPC User's Guide and Reference
OPC-DA Property Dialog
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The OPC-DA Property Dialog (DAPropertyDialog class) allows the user to interactively select the OPC property on a specific OPC item.
Use the ServerDescriptor property to specify the OPC Data Access server whose items are to be browsed, set the NodeDescriptor property to the OPC Item Id needed, and then call the ShowDialog method. If the result is equal to DialogResult.OK, the user has selected the OPC property, and information about it can be retrieved from the PropertyElement property.
If you want to change the parameters of the client object the component uses to perform its OPC operations, you can use the ClientSelector Property.