| Name | Description | |
|---|---|---|
 | DAPropertyDescriptor Constructor | Overloaded. |
OPC Studio User's Guide and Reference
DAPropertyDescriptor Class Members
The following tables list the members exposed by DAPropertyDescriptor.
| Name | Description | |
|---|---|---|
| DAPropertyDescriptor Constructor | Overloaded. |
| Name | Description | |
|---|---|---|
 | DefaultAsString | Default DAPropertyDescriptor, expressed as string.
The value of this constant is "" (String.Empty). |
| DefaultNamespace | Default namespace, used when the qualified name is given as a string but does not specify a namespace.
The value of this constant is "http://opcfoundation.org/DataAccess/". |
| DefaultPropertyId | Default property Id. Equals to DAPropertyIds.Null.
The value of this constant is DAPropertyIds.Null. |
| DefaultQualifiedNameString | Default string form of the qualified name. An empty string.
The value of this constant is "" (String.Empty). |
| Name | Description | |
|---|---|---|
  | AccessRights | Item Access Rights.
Remarks: (OPC_PROPERTY_ACCESS_RIGHTS) The value of this enum member is 5. |
| AlarmAreaList | Alarm Area List.
Remarks: (OPC_PROPERTY_ALARM_AREA_LIST) The value of this enum member is 302. |
| AlarmQuickHelp | Alarm Quick Help.
Remarks: (OPC_PROPERTY_ALARM_QUICK_HELP) The value of this enum member is 301. |
| ChangeRateLimit | Rate of Change Limit.
Remarks: (OPC_PROPERTY_CHANGE_RATE_LIMIT) The value of this enum member is 311. |
| CloseLabel | Contact Close Label.
Remarks: (OPC_PROPERTY_CLOSE_LABEL) The value of this enum member is 106. |
| ConditionLogic | Condition Logic.
Remarks: (OPC_PROPERTY_CONDITION_LOGIC) The value of this enum member is 304. |
| ConditionStatus | Condition Status.
Remarks: (OPC_PROPERTY_CONDITION_STATUS) The value of this enum member is 300. |
| ConsistencyWindow | (OPC_PROPERTY_TYPE_DESCRIPTION).
The value of this enum member is 605. |
| DataFilterValue | (OPC_PROPERTY_DATA_FILTER_VALUE).
The value of this enum member is 609. |
| DataType | Item Canonical DataType.
Remarks: (OPC_PROPERTY_DATATYPE) The value of this enum member is 1. |
| Deadband | Deadband.
Remarks: (OPC_PROPERTY_DEADBAND) The value of this enum member is 306. |
| DefaultQualifiedName | Default qualified name (used with OPC XML-DA). Empty. |
| Description | Item Description.
Remarks: (OPC_PROPERTY_DESCRIPTION) The value of this enum member is 101. |
| DeviationLimit | Deviation Limit.
Remarks: (OPC_PROPERTY_DEVIATION_LIMIT) The value of this enum member is 312. |
| Dictionary | (OPC_PROPERTY_DICTIONARY).
The value of this enum member is 603. |
| DictionaryId | (OPC_PROPERTY_DICTIONARY_ID).
The value of this enum member is 601. |
| EUInfo | Item EUInfo.
Remarks: (OPC_PROPERTY_EU_INFO) The value of this enum member is 8. |
| EUType | Item EU Type.
Remarks: (OPC_PROPERTY_EU_TYPE) The value of this enum member is 7. |
| EUUnits | EU Units.
Remarks: (OPC_PROPERTY_EU_UNITS) The value of this enum member is 100. |
| HighEU | High EU.
Remarks: (OPC_PROPERTY_HIGH_EU) The value of this enum member is 102. |
| HighHighLimit | HiHi Limit.
Remarks: (OPC_PROPERTY_HIHI_LIMIT) The value of this enum member is 307. |
| HighIR | High Instrument Range.
Remarks: (OPC_PROPERTY_HIGH_IR) The value of this enum member is 104. |
| HighLimit | Hi Limit.
Remarks: (OPC_PROPERTY_HI_LIMIT) The value of this enum member is 308. |
| IsNull | Determines whether the property descriptor is null, i.e. specifies neither property ID. |
| LimitExceeded | Limit Exceeded.
Remarks: (OPC_PROPERTY_LIMIT_EXCEEDED) The value of this enum member is 305. |
| LowEU | Low EU.
Remarks: (OPC_PROPERTY_LOW_EU) The value of this enum member is 103. |
| LowIR | Low Instrument Range.
Remarks: (OPC_PROPERTY_LOW_IR) The value of this enum member is 105. |
| LowLimit | Lo Limit.
Remarks: (OPC_PROPERTY_LO_LIMIT) The value of this enum member is 309. |
| LowLowLimit | LoLo Limit.
Remarks: (OPC_PROPERTY_LOLO_LIMIT) The value of this enum member is 310. |
| MaximumValue | Maximum Value.
Remarks: OPC XML-DA Specification Version 1.01. The value of this enum member is 110. |
| MinimumValue | Minimum Value.
Remarks: OPC XML-DA Specification Version 1.01. The value of this enum member is 109. |
| Null | A null property descriptor. |
| OpenLabel | Contact Open Label.
Remarks: (OPC_PROPERTY_OPEN_LABEL) The value of this enum member is 107. |
| PrimaryAlarmArea | Primary Alarm Area.
Remarks: (OPC_PROPERTY_PRIMARY_ALARM_AREA) The value of this enum member is 303. |
| PropertyId | The Property ID of the OPC property. |
| QualifiedName | The qualified name for this property (used with OPC XML-DA). |
| QualifiedNameString | The string form of the qualified name for this property (used with OPC XML-DA). |
| Quality | Item Quality.
Remarks: (OPC_PROPERTY_QUALITY) The value of this enum member is 3. |
| ScanRate | Server Scan Rate.
Remarks: (OPC_PROPERTY_SCAN_RATE) The value of this enum member is 6. |
| SoundFile | Sound File.
Remarks: (OPC_PROPERTY_SOUND_FILE) The value of this enum member is 313. |
| Timestamp | Item Timestamp.
Remarks: (OPC_PROPERTY_TIMESTAMP) The value of this enum member is 4. |
| TimeZone | Item Timezone.
Remarks: (OPC_PROPERTY_TIMEZONE) The value of this enum member is 108. |
| TypeDescription | (OPC_PROPERTY_TYPE_DESCRIPTION).
The value of this enum member is 604. |
| TypeId | (OPC_PROPERTY_TYPE_ID).
The value of this enum member is 602. |
| TypeSystemId | (OPC_PROPERTY_TYPE_SYSTEM_ID).
The value of this enum member is 600. |
| UnconvertedItemId | (OPC_PROPERTY_UNCONVERTED_ITEM_ID).
The value of this enum member is 607. |
| UnfilteredItemId | (OPC_PROPERTY_UNFILTERED_ITEM_ID).
The value of this enum member is 608. |
| Value | Item Value.
Remarks: (OPC_PROPERTY_VALUE) The value of this enum member is 2. |
| ValuePrecision | Value Precision.
Remarks: OPC XML-DA Specification Version 1.01. The value of this enum member is 111. |
| WriteBehavior | (OPC_PROPERTY_WRITE_BEHAVIOR).
The value of this enum member is 606. |
| Name | Description | |
|---|---|---|
 | Clone | Overridden. |
| Equals | Overloaded. Determines whether the specified DAPropertyDescriptor is equal to the current object. |
| FromDAPropertyElement | Converts a property element to a DAPropertyDescriptor object. |
| FromDAPropertyId | Converts a property Id to a DAPropertyDescriptor object. |
| FromDAPropertyIds | Converts an enumerated property Id to a DAPropertyDescriptor object. |
| FromInt64 | Converts a numerical property Id value to a DAPropertyDescriptor object. |
| FromString | Converts a qualified name or a property Id as a string to a DAPropertyDescriptor object. |
| FromXmlQualifiedName | Converts a qualified name to a DAPropertyDescriptor object. |
| GetHashCode | Overridden. |
| GetObjectData | Overridden. |
| GetSchema | (Inherited from OpcLabs.BaseLib.Info) |
| GetType | Gets the System.Type of the current instance. (Inherited from object) |
| MakeArgumentString | Infrastructure. |
| ParseQualifiedName | Parses a string representing an XML qualified name of OPC-DA property (used with OPC XML). |
| ReadStringList | Reads the object content from the list of strings. |
| ReadXml | (Inherited from OpcLabs.BaseLib.Info) |
| ToString | Overridden. Returns a string describing the contents of the property descriptor. |
| WriteStringList | Writes the object content to the list of strings. |
| WriteXml | (Inherited from OpcLabs.BaseLib.Info) |
| 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) |
| ReadXmlElement | Overridden. Infrastructure. |
| WriteXmlElement | Overridden. Infrastructure. |
| Name | Description | |
|---|---|---|
 | SetState<TNode> | Sets the arbitrary object associated with the node. |
| Name | Description | |
|---|---|---|
 | PropertyChanged | This event is raised when a property is changed on a component. |
 Equality | Determines whether the two objects are equal. |
| Implicit Type Conversion | Overloaded. Converts a property element to a DAPropertyDescriptor object. |
| Inequality | Determines whether the two objects are not equal. |