IEasyDAClientExtension2 Class Members

The following tables list the members exposed by IEasyDAClientExtension2.

Public Fields

	Name	Description
	DefaultWaitGroupParameters	Default group parameters used in Wait methods. Based on DefaultWaitRequestedUpdateRate.
	DefaultWaitMillisecondsTimeout	Default timeout used in Wait methods. In milliseconds. Equals to System.Threading.Timeout.Infinite (-1).
	DefaultWaitMinimumQuality	Default minimum quality used in Wait methods. Equals to OpcLabs.EasyOpc.DataAccess.DAQualities.GoodNonspecific (192).
	DefaultWaitRequestedUpdateRate	Default requested update rate used in Wait methods. In milliseconds. Equals to 1000 milliseconds (1 second).

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Public Methods

	Name	Description
	BrowseOne	Browses the nodes in OPC DA server's address space. Starts from the specified node, and returns information about child nodes found. Browses the nodes in server's address space, given a browse arguments object.
	BrowseTree	Overloaded. Allows to traverse through OPC DA address space nodes under the specified node, using given browse arguments.
	Equals	(Inherited from object)
	GetAccessRightsPropertyValue	Overloaded. Obtains value of Item Access Rights OPC property for a given OPC item.
	GetAlarmAreaListPropertyValue	Overloaded. Obtains value of Alarm Area List OPC property for a given OPC item.
	GetAlarmQuickHelpPropertyValue	Overloaded. Obtains value of Alarm Quick Help OPC property for a given OPC item.
	GetChangeRateLimitPropertyValue	Overloaded. Obtains value of Rate of Change Limit OPC property for a given OPC item.
	GetCloseLabelPropertyValue	Overloaded. Obtains value of Contact Close Label OPC property for a given OPC item.
	GetConditionLogicPropertyValue	Overloaded. Obtains value of Condition Logic OPC property for a given OPC item.
	GetConditionStatusPropertyValue	Overloaded. Obtains value of Condition Status OPC property for a given OPC item.
	GetDataTypePropertyValue	Overloaded. Obtains value of Item Canonical DataType OPC property for a given OPC item.
	GetDeadbandPropertyValue	Overloaded. Obtains value of Deadband OPC property for a given OPC item.
	GetDescriptionPropertyValue	Overloaded. Obtains value of Item Description OPC property for a given OPC item.
	GetDeviationLimitPropertyValue	Overloaded. Obtains value of Deviation Limit OPC property for a given OPC item.
	GetEUInfoPropertyValue	Overloaded. Obtains value of Item EUInfo OPC property for a given OPC item.
	GetEUTypePropertyValue	Overloaded. Obtains value of Item EU Type OPC property for a given OPC item.
	GetEUUnitsPropertyValue	Overloaded. Obtains value of EU Units OPC property for a given OPC item.
	GetHashCode	Serves as the default hash function. (Inherited from object)
	GetHighEUPropertyValue	Overloaded. Obtains value of High EU OPC property for a given OPC item.
	GetHighHighLimitPropertyValue	Overloaded. Obtains value of HiHi Limit OPC property for a given OPC item.
	GetHighIRPropertyValue	Overloaded. Obtains value of High Instrument Range OPC property for a given OPC item.
	GetHighLimitPropertyValue	Overloaded. Obtains value of Hi Limit OPC property for a given OPC item.
	GetItemPropertyRecord	Overloaded. Obtains a DAItemPropertyRecord structure filled with OPC property values for a given OPC item.
	GetLimitExceededPropertyValue	Overloaded. Obtains value of Limit Exceeded OPC property for a given OPC item.
	GetLowEUPropertyValue	Overloaded. Obtains value of Low EU OPC property for a given OPC item.
	GetLowIRPropertyValue	Overloaded. Obtains value of Low Instrument Range OPC property for a given OPC item.
	GetLowLimitPropertyValue	Overloaded. Obtains value of Lo Limit OPC property for a given OPC item.
	GetLowLowLimitPropertyValue	Overloaded. Obtains value of LoLo Limit OPC property for a given OPC item.
	GetOpenLabelPropertyValue	Overloaded. Obtains value of Contact Open Label OPC property for a given OPC item.
	GetPrimaryAlarmAreaPropertyValue	Overloaded. Obtains value of Primary Alarm Area OPC property for a given OPC item.
	GetPropertyValue	Overloaded. Gets a value of typed OPC property, using descriptor objects for the OPC server, node, and the property.
	GetPropertyValueArrayOfBoolean	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to an array of System.Boolean.
	GetPropertyValueArrayOfByte	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to an array of System.Byte.
	GetPropertyValueArrayOfChar	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to an array of System.Char.
	GetPropertyValueArrayOfDateTime	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to an array of System.DateTime.
	GetPropertyValueArrayOfDecimal	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to an array of System.Decimal.
	GetPropertyValueArrayOfDouble	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to an array of System.Double.
	GetPropertyValueArrayOfInt16	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to an array of System.Int16.
	GetPropertyValueArrayOfInt32	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to an array of System.Int32.
	GetPropertyValueArrayOfInt64	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to an array of System.Int64.
	GetPropertyValueArrayOfIntPtr	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to an array of System.IntPtr.
	GetPropertyValueArrayOfSingle	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to an array of System.Single.
	GetPropertyValueArrayOfString	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to an array of System.String.
	GetPropertyValueBoolean	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to System.Boolean.
	GetPropertyValueByte	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to System.Byte.
	GetPropertyValueChar	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to System.Char.
	GetPropertyValueDateTime	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to System.DateTime.
	GetPropertyValueDecimal	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to System.Decimal.
	GetPropertyValueDictionary	Overloaded. Obtains a DAPropertyValueDictionary filled with OPC property values for a given OPC item.
	GetPropertyValueDouble	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to System.Double.
	GetPropertyValueInt16	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to System.Int16.
	GetPropertyValueInt32	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to System.Int32.
	GetPropertyValueInt64	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to System.Int64.
	GetPropertyValueIntPtr	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to System.IntPtr.
	GetPropertyValueSingle	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to System.Single.
	GetPropertyValueString	Overloaded. Gets a value of OPC property, using descriptor object for the OPC server, and an OPC Item ID, and converts it to System.String.
	GetQualityPropertyValue	Overloaded. Obtains value of Item Quality OPC property for a given OPC item.
	GetScanRatePropertyValue	Overloaded. Obtains value of Server Scan Rate OPC property for a given OPC item.
	GetSoundFilePropertyValue	Overloaded. Obtains value of Sound File OPC property for a given OPC item.
	GetTimestampPropertyValue	Overloaded. Obtains value of Item Timestamp OPC property for a given OPC item.
	GetTimeZonePropertyValue	Overloaded. Obtains value of Item Timezone OPC property for a given OPC item.
	GetType	Gets the System.Type of the current instance. (Inherited from object)
	GetValuePropertyValue	Overloaded. Obtains value of Item Value OPC property for a given OPC item.
	ReadItem	Overloaded. Reads a typed named item from an OPC server. A typed value, quality and timestamp are returned. The server can be local or can be remotely accessed via DCOM. Optionally, an access path can be specified or a specific data type can be requested. The ReadItem method only waits for the first update from the server (or until the timeout elapses); it does not wait until the quality becomes "uncertain" or "good".
	ReadItemValue	Overloaded. Reads a typed named item from an OPC server. Only the item's typed value is returned (quality and timestamp are not returned). The server can be local or can be remotely accessed via DCOM. Optionally, an access path can be specified or a specific data type can be requested. Use this method if you are only interested in the actual typed value of the OPC item. Use ReadItem method if you also need the quality or timestamp. The ReadItemValue method makes it very easy to obtain the actual typed data value with just one function call. The ReadItemValue method waits until the quality becomes "good", or the timeout elapses.
	ReadItemValueArrayOfBoolean	Overloaded. Reads a value of named OPC item, and converts it to an array of System.Boolean. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueArrayOfByte	Overloaded. Reads a value of named OPC item, and converts it to an array of System.Byte. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueArrayOfChar	Overloaded. Reads a value of named OPC item, and converts it to an array of System.Char. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueArrayOfDateTime	Overloaded. Reads a value of named OPC item, and converts it to an array of System.DateTime. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueArrayOfDecimal	Overloaded. Reads a value of named OPC item, and converts it to an array of System.Decimal. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueArrayOfDouble	Overloaded. Reads a value of named OPC item, and converts it to an array of System.Double. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueArrayOfInt16	Overloaded. Reads a value of named OPC item, and converts it to an array of System.Int16. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueArrayOfInt32	Overloaded. Reads a value of named OPC item, and converts it to an array of System.Int32. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueArrayOfInt64	Overloaded. Reads a value of named OPC item, and converts it to an array of System.Int64. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueArrayOfIntPtr	Overloaded. Reads a value of named OPC item, and converts it to an array of System.IntPtr. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueArrayOfSingle	Overloaded. Reads a value of named OPC item, and converts it to an array of System.Single. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueArrayOfString	Overloaded. Reads a value of named OPC item, and converts it to an array of System.String. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueBoolean	Overloaded. Reads a value of named OPC item, and converts it to System.Boolean. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueByte	Overloaded. Reads a value of named OPC item, and converts it to System.Byte. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueChar	Overloaded. Reads a value of named OPC item, and converts it to System.Char. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueDateTime	Overloaded. Reads a value of named OPC item, and converts it to System.DateTime. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueDecimal	Overloaded. Reads a value of named OPC item, and converts it to System.Decimal. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueDouble	Overloaded. Reads a value of named OPC item, and converts it to System.Double. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueInt16	Overloaded. Reads a value of named OPC item, and converts it to System.Int16. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueInt32	Overloaded. Reads a value of named OPC item, and converts it to System.Int32. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueInt64	Overloaded. Reads a value of named OPC item, and converts it to System.Int64. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueIntPtr	Overloaded. Reads a value of named OPC item, and converts it to System.IntPtr. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueSingle	Overloaded. Reads a value of named OPC item, and converts it to System.Single. The value is requested from the OPC server using a corresponding data type.
	ReadItemValueString	Overloaded. Reads a value of named OPC item, and converts it to System.String. The value is requested from the OPC server using a corresponding data type.
	SupportsTechnology	Determines whether the client object supports a given OPC technology or technologies (such as OPC COM or OPC XML).
	ToString	Returns a string that represents the current object. (Inherited from object)
	WaitForItemValue	Overloaded. Subscribes to the specified OPC-DA item, and monitors its data until it has "good" quality, an error occurs, or the alloted time elapses.
	WaitForMultipleItems	Overloaded. Subscribes to the specified OPC-DA items, and monitors their data until the predicates specified for each item become true, or the alloted time elapses.
	WaitForMultipleItemValues	Overloaded. Subscribes to the specified OPC-DA items, and monitors their data until they have at least the quality specified for each item, an error occurs, or the alloted time elapses.
	WriteItem	Overloaded. Writes into a typed named item in an OPC server. A typed value, quality and timestamp are written. The server can be local or can be remotely accessed via DCOM. Optionally, an access path can be specified or a specific data type can be requested.
	WriteItemValue	Overloaded. Writes a typed value into a (typed) named item in an OPC server. Only the item's typed value is written (quality and timestamp are not written). The server can be local or can be remotely accessed via DCOM. Optionally, an access path can be specified or a specific data type can be requested.
	WriteItemValueArrayOfBoolean	Overloaded. Writes an array of System.Boolean value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueArrayOfByte	Overloaded. Writes an array of System.Byte value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueArrayOfChar	Overloaded. Writes an array of System.Char value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueArrayOfDecimal	Overloaded. Writes an array of System.Decimal value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueArrayOfDouble	Overloaded. Writes an array of System.Double value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueArrayOfInt16	Overloaded. Writes an array of System.Int16 value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueArrayOfInt32	Overloaded. Writes an array of System.Int32 value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueArrayOfInt64	Overloaded. Writes an array of System.Int64 value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueArrayOfIntPtr	Overloaded. Writes an array of System.IntPtr value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueArrayOfSingle	Overloaded. Writes an array of System.Single value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueArrayOfString	Overloaded. Writes an array of System.String value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueBoolean	Overloaded. Writes a System.Boolean value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueByte	Overloaded. Writes a System.Byte value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueChar	Overloaded. Writes a System.Char value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueDecimal	Overloaded. Writes a System.Decimal value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueDouble	Overloaded. Writes a System.Double value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueInt16	Overloaded. Writes a System.Int16 value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueInt32	Overloaded. Writes a System.Int32 value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueInt64	Overloaded. Writes a System.Int64 value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueIntPtr	Overloaded. Writes a System.IntPtr value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueSingle	Overloaded. Writes a System.Single value into a named OPC item. A corresponding data type is passed to the OPC server.
	WriteItemValueString	Overloaded. Writes a System.String value into a named OPC item. A corresponding data type is passed to the OPC server.

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Protected Methods

	Name	Description
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from object)
	MemberwiseClone	Creates a shallow copy of the current System.Object. (Inherited from object)

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Reference

IEasyDAClientExtension2 Class
OpcLabs.EasyOpc.DataAccess.Extensions Namespace