OPC Studio User's Guide and Reference
DAVtq Class Members
Properties  Methods 


OpcLabs.EasyOpcClassicCore Assembly > OpcLabs.EasyOpc.DataAccess Namespace : DAVtq Class

The following tables list the members exposed by DAVtq.

Public Constructors
 NameDescription
Public ConstructorDAVtq ConstructorOverloaded. Initializes a new instance of the class.  
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Public Properties
 NameDescription
Public Propertystatic (Shared in Visual Basic)DefaultQualityDefault quality.  
Public Propertystatic (Shared in Visual Basic)DefaultTimestampDefault timestamp. In UTC.  
Public Propertystatic (Shared in Visual Basic)DefaultTimestampLocalDefault timestamp. In local time.  
Public PropertyHasTimestampDetermines whether there is a (non-default) timestamp in the VTQ.  
Public PropertyHasValueReturns whether the Value contains valid data.  
Public Propertystatic (Shared in Visual Basic)NullA null value-timestamp-quality.  
Public PropertyQualityGets or sets the quality.  
Public PropertyStatusInfoStatus information.  
Public PropertyTimestampGets or sets the timestamp. In UTC.  
Public PropertyTimestampDoubleGets or sets the timestamp. In UTC, as double-precision floating-point number that contains an OLE Automation date.  
Public PropertyTimestampLocalGets or sets the timestamp. In local time.  
Public PropertyTimestampLocalDoubleGets or sets the timestamp. In local time, as double-precision floating-point number that contains an OLE Automation date.  
Public PropertyValueGets or sets the data value.  
Public PropertyValueTypeReturns the type of the Value, or null if there is no value.  
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Public Methods
 NameDescription
Public MethodCloneOverridden.   
Public MethodDisplayValueFormats the data value for display.  
Public MethodEqualsOverloaded. Overridden. Determines whether the specified DAVtq is equal to the current object.  
Public MethodGetHashCodeOverridden.   
Public MethodGetObjectDataOverridden.   
Public MethodGetSchema (Inherited from OpcLabs.BaseLib.Info)
Public MethodGetTypeGets the System.Type of the current instance. (Inherited from object)
Public MethodReadXml (Inherited from OpcLabs.BaseLib.Info)
Public MethodSetValueSets the data value.  
Public MethodToStringOverloaded. Overridden. Returns a System.String that represents the current DAVtq.  
Public MethodWriteXml (Inherited from OpcLabs.BaseLib.Info)
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Protected Methods
 NameDescription
Protected MethodCheckValueInfrastructure.  
Protected MethodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from object)
Protected MethodMemberwiseCloneCreates a shallow copy of the current System.Object. (Inherited from object)
Protected MethodReadXmlElementOverridden. Infrastructure.  
Protected MethodShouldShowHasTimestampDetermines whether HasTimestamp value is evident.  
Protected MethodShouldShowTimestampDetermines whether Timestamp value is evident.  
Protected MethodShouldShowTimestampLocalDetermines whether TimestampLocal value is evident.  
Protected MethodWriteXmlElementOverridden. Infrastructure.  
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Extension Methods
 NameDescription
Public Extension MethodSetState<TNode>Sets the arbitrary object associated with the node.
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Public Operators
public Operator Equality Determines whether the two objects are equal.
public Operator Inequality Determines whether the two objects are not equal.
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See Also

Reference

DAVtq Class
OpcLabs.EasyOpc.DataAccess Namespace

 

 

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