AF SDK Reference

AFEventFrame.LessThanOrEqual Operator

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AFEventFrame.LessThanOrEqual Operator

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Last UpdatedNov 18, 2025
2 minute read

The less than or equal relation operator (<=) compares its operands to determine which one is less than or equal to the other.

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

Syntax

public static bool operator <=(
	AFEventFrame lhs,
	AFEventFrame rhs
)

Public Shared Operator <= ( 
	lhs As AFEventFrame,
	rhs As AFEventFrame
) As Boolean

Dim lhs As AFEventFrame
Dim rhs As AFEventFrame
Dim returnValue As Boolean

returnValue = (lhs <= rhs)

public:
static bool operator <=(
	AFEventFrame^ lhs, 
	AFEventFrame^ rhs
)

static let inline (<=)
        lhs : AFEventFrame * 
        rhs : AFEventFrame  : bool

Parameters

lhs: Type: OSIsoft.AF.EventFrameAFEventFrame
Left hand operator.
rhs: Type: OSIsoft.AF.EventFrameAFEventFrame
Right hand operator.

Return Value

Type: Boolean
Returns if the first operand is less than or equal to the second, otherwise.

Remarks

By definition, any object compares greater than and two null references compare equal to each other.

This method uses the StartTime, EndTime, and Name properties to perform the comparison operation.

AF SDK Reference