| IObservingConditionsTimeSinceLastUpdate Method |
Provides the time since the sensor value was last updated
Namespace: ASCOM.DeviceInterface
Assembly: ASCOM.DeviceInterfaces (in ASCOM.DeviceInterfaces.dll) Version: 6.0.0.0 (6.2.0.2774)
SyntaxParameters
- PropertyName
- Type: SystemString
Name of the property whose time since last update is required
Return Value
Type: DoubleTime in seconds since the last sensor update for this property
Exceptions| Exception | Condition |
|---|---|
| MethodNotImplementedException | If the sensor is not implemented. |
| NotConnectedException | If the device is not connected and this information is only available when connected. |
| InvalidValueException | If an invalid property name parameter is supplied. |
RemarksMust Not throw a MethodNotImplementedException when the specified sensor Is implemented but must throw a MethodNotImplementedException when the specified sensor Is Not implemented.
PropertyName must be the name of one of the sensor properties specified in the IObservingConditions interface. If the caller supplies some other value, throw an InvalidValueException.
Return a negative value to indicate that no valid value has ever been received from the hardware.
If an empty string is supplied as the PropertyName, the driver must return the time since the most recent update of any sensor. A MethodNotImplementedException must not be thrown in this circumstance.
See Also