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AF SDK Reference

AFAggregate.Summary(T) Method (IEnumerable(T), String, AFSummaryTypes)

AFAggregate.Summary(T) Method (IEnumerable(T), String, AFSummaryTypes)

  • Last UpdatedNov 18, 2025
  • 2 minute read
AFAggregate.Summary(T) Method (IEnumerable(T), String, AFSummaryTypes)
Summarizes the specified items.

Namespace:  OSIsoft.AF.Data.Aggregate
Assembly:  OSIsoft.AFSDK (in OSIsoft.AFSDK.dll) Version: 3.1.1.1182

Syntax

public static AFSummaryResult Summary<T>(
	this IEnumerable<T> items,
	string field,
	AFSummaryTypes summaryTypes
)
where T : AFObject
<ExtensionAttribute>
Public Shared Function Summary(Of T As AFObject) ( 
	items As IEnumerable(Of T),
	field As String,
	summaryTypes As AFSummaryTypes
) As AFSummaryResult

Dim items As IEnumerable(Of T)
Dim field As String
Dim summaryTypes As AFSummaryTypes
Dim returnValue As AFSummaryResult

returnValue = items.Summary(field, 
	summaryTypes)
public:
[ExtensionAttribute]
generic<typename T>
where T : AFObject
static AFSummaryResult^ Summary(
	IEnumerable<T>^ items, 
	String^ field, 
	AFSummaryTypes summaryTypes
)
[<ExtensionAttribute>]
static member Summary : 
        items : IEnumerable<'T> * 
        field : string * 
        summaryTypes : AFSummaryTypes -> AFSummaryResult  when 'T : AFObject

Parameters

items
Type: System.Collections.GenericIEnumerableT
The items that should be summarized.
field
Type: SystemString
The field that should be summarized.
summaryTypes
Type: OSIsoft.AF.DataAFSummaryTypes
The summaries that should be performed on the field.

Type Parameters

T
The type of items to summarize

Return Value

Type: AFSummaryResult
A result containing the requested summaries or an error if the summaries could not be performed.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableT. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Version Information

AFSDK

Supported in: 3.1.1, 3.1.0, 3.0.2, 3.0.1, 3.0.0, 2.10.11, 2.10.5, 2.10.0, 2.10, 2.9.5, 2.9

See Also

In This Topic
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