PIPoint.IsAttributeLoaded Method

Public Function IsAttributeLoaded ( 
	name As String
) As Boolean

Dim instance As PIPoint
Dim name As String
Dim returnValue As Boolean

returnValue = instance.IsAttributeLoaded(name)

public:
bool IsAttributeLoaded(
	String^ name
)

member IsAttributeLoaded : 
        name : string -> bool 

' This example demonstrates how to create an attribute for an
' element and retrieve and set PIPoint attributes.

' Get the Database
Dim myPISystems As PISystems = New PISystems
Dim myPISystem As PISystem = myPISystems.DefaultPISystem
Dim myDB As AFDatabase = myPISystem.Databases.DefaultDatabase

' Create an Element Template
Dim myElemTemplate As AFElementTemplate = myDB.ElementTemplates.Add("MyElementTemplate")
Dim myAttrTemplate As AFAttributeTemplate = myElemTemplate.AttributeTemplates.Add("Attr#1")
myAttrTemplate.DataReferencePlugIn = AFDataReference.GetPIPointDataReference(myPISystem)
myAttrTemplate.ConfigString = "\\%Server%\%Element%;pointtype=Float64"

' Create an Element from the Element Template
Dim myElement As AFElement = myDB.Elements.Add("MyElement", myElemTemplate)

' Create the PIPoint for the Attribute
Dim myAttribute As AFAttribute = myElement.Attributes("Attr#1")
myAttribute.DataReference.CreateConfig()

' Find all PIPoint Attributes and Display their values
Dim drAttrValue As Object
myAttribute.PIPoint.LoadAttributes()
Dim list As IEnumerable(Of String) = myAttribute.PIPoint.FindAttributeNames(Nothing)
Console.WriteLine("Found PIPoint Attributes: nameFilter='<null>'")
For Each item As String In list
    drAttrValue = myAttribute.PIPoint.GetAttribute(item)
    Console.WriteLine("  {0} = '{1}'", item, drAttrValue)
Next
Console.WriteLine()

' Find PIPoint Attributes matching 'Ex*' and display their values
list = myAttribute.PIPoint.FindAttributeNames("Ex*")
Console.WriteLine("Found PIPoint Attributes: nameFilter='Ex*'")
Dim cnt As Integer = 0
For Each item As String In list
    cnt = (cnt + 1)
    drAttrValue = myAttribute.PIPoint.GetAttribute(item)
    Console.WriteLine("  {0} = '{1}'", item, drAttrValue)
Next
Console.WriteLine()

' Unload all PIPoint Attributes
myAttribute.PIPoint.UnloadAllAttributes()

' Load specific PIPoint Attributes and display their values
myAttribute.PIPoint.LoadAttributes(PICommonPointAttributes.PointType,
                                   PICommonPointAttributes.PointID,
                                   PICommonPointAttributes.Descriptor,
                                   PICommonPointAttributes.ExtendedDescriptor,
                                   PICommonPointAttributes.CreationDate)
drAttrValue = myAttribute.PIPoint.GetAttribute(PICommonPointAttributes.PointType)
Console.WriteLine("PIPoint Attribute '{0}' = '{1}'.", PICommonPointAttributes.PointType, drAttrValue)
drAttrValue = myAttribute.PIPoint.GetAttribute(PICommonPointAttributes.PointID)
Console.WriteLine("PIPoint Attribute '{0}' = '{1}'.", PICommonPointAttributes.PointID, drAttrValue)
drAttrValue = myAttribute.PIPoint.GetAttribute(PICommonPointAttributes.Descriptor)
Console.WriteLine("PIPoint Attribute '{0}' = '{1}'.", PICommonPointAttributes.Descriptor, drAttrValue)
drAttrValue = myAttribute.PIPoint.GetAttribute(PICommonPointAttributes.ExtendedDescriptor)
Console.WriteLine("PIPoint Attribute '{0}' = '{1}'.", PICommonPointAttributes.ExtendedDescriptor, drAttrValue)
drAttrValue = myAttribute.PIPoint.GetAttribute(PICommonPointAttributes.CreationDate)
Console.WriteLine("PIPoint Attribute '{0}' = '{1}'.", PICommonPointAttributes.CreationDate, drAttrValue)
Console.WriteLine()

' Set PIPoint Attribute value
Dim newAttrValue As String = ("New Value: " + DateTime.Now.ToShortTimeString)
myAttribute.PIPoint.SetAttribute(PICommonPointAttributes.Descriptor, newAttrValue)
myAttribute.PIPoint.SetAttribute(PICommonPointAttributes.ExtendedDescriptor, newAttrValue)
Dim errors As AFErrors(Of String) = myAttribute.PIPoint.SaveAttributes(PICommonPointAttributes.Descriptor,
                                                                       PICommonPointAttributes.ExtendedDescriptor)
If errors IsNot Nothing AndAlso errors.HasErrors Then
    Console.WriteLine("Errors calling PIPoint.SaveAttributes:")
    For Each item As KeyValuePair(Of String, Exception) In errors.Errors
        Console.WriteLine("  {0}: {1}", item.Key, item.Value)
    Next
End If

No code example is currently available or this language may not be supported.

No code example is currently available or this language may not be supported.