AF SDK Reference

AFFile.LessThanOrEqual Operator

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AFFile.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.Asset
Assembly: OSIsoft.AFSDK (in OSIsoft.AFSDK.dll) Version: 3.1.1.1182

Syntax

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

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

Dim lhs As AFFile
Dim rhs As AFFile
Dim returnValue As Boolean

returnValue = (lhs <= rhs)

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

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

Parameters

lhs: Type: OSIsoft.AF.AssetAFFile
Left hand operator.
rhs: Type: OSIsoft.AF.AssetAFFile
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 Name and ChangeDate of the objects to perform the comparison operation.

AF SDK Reference