INetworkFieldEvaluator Interface

Provides access to members that specify the properties of a network attribute evaluator whose values are derived from object field attributes.

Members

	Name	Description
	Expression	Sets the VBScript calculator expression for this network evaluator.
	ExpressionPreLogic	Sets the pre-logic used to derive the values for this network evaluator.
	Language	Sets the script language

INetworkFieldEvaluator.Expression Property

Sets the VBScript calculator expression for this network evaluator.

Public Property Expression As String

public string Expression {get; set;}

INetworkFieldEvaluator.ExpressionPreLogic Property

Sets the pre-logic used to derive the values for this network evaluator.

Public Property ExpressionPreLogic As String

public string ExpressionPreLogic {get; set;}

INetworkFieldEvaluator.Language Property

Sets the script language.

Public Property Language As String

public string Language {get; set;}

Classes that implement INetworkFieldEvaluator

Classes	Description
NetworkFieldEvaluator	A container for describing a network attribute evaluator whose values are derived from object field attributes.

Remarks

The INetworkFieldEvaluator interface accesses the code used by a NetworkFieldEvaluator object for calculating the attribute value for a network element. Any setup computations needed prior to calculate the attribute value are specified in the preLogic parameter. The value of the attribute is computed from the expression.

The example below shows the preLogic and expression for determining the direction of travel based on a string field named One_way:

• PreLogic:

     restricted = False
        Select Case UCase([One_way])
          Case "N", "TF", "T": restricted = True
        End Select

• Expression:

     restricted