Sets or returns how many items are in the list when the value of the CapType property is TWON_ARRAY or TWON_ENUMERATION. For String data type, the list is in CapItemsString property. For other data types, the list is in CapItems property. This is a runtime property.
Reading this property after calling CapGet() method. After setting this property, call CapSet() method to actually set the value.
When an error occurs and IfThrowException property is TRUE, an exception will be thrown. Check ErrorCode property and ErrorString property for error information.
CapType property, CapItems property, CapItemsString property,
Refer to How to Negotiate Capability with Different Capability Container Types.
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