Hi

I am trying to use ExpressionEvaluatorClass 's EvalXml method, but I always
get System.DBNull as result. Purpose is to evaluate th expression XML
against the OrderForm, this function returns
ExpressionEvaluator.ExpressionResult enumeration which has 3 values true,
false and undefined.

I am not sure whether the parameters I am passing to this function are
correct. Here is what I am using:

Dim objExpressionEvaluator As
Microsoft.CommerceServer.Interop.Targeting.ExpressionEvaluatorClass = New
Microsoft.CommerceServer.Interop.Targeting.ExpressionEvaluatorClass

If Not (IsDBNull(objExpressionEvaluator.EvalXML(strExpressionXML,
TransactionContext.Current.CartOrderForm.Dictionary))) Then

//Code....It never gets inside as the return value from the function is
always null..

End If


Regards

[ Post a follow-up to this message ]

Hi, there,

you need to call IExpressionEvaluator's Connect method before doing any eval
uation. Parse an expression store's connection string to Connect method.

HTH,
Andy Xu [MSFT]
Commerce Server Team
--
This posting is provided "AS IS" with no warranties, and confers no rights. Use of incl
uded script samples are subject to the terms specified at http://www.microsoft.com
/info/cpyright.htm

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--------------------
From: "Rajashekar" <rajasekhark@bsil.com>
Subject: how to use EvalXml
Date: Wed, 7 Jul 2004 10:30:38 +0530
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Hi

I am trying to use ExpressionEvaluatorClass 's EvalXml method, but I always
get System.DBNull as result. Purpose is to evaluate th expression XML
against the OrderForm, this function returns
ExpressionEvaluator.ExpressionResult enumeration which has 3 values true,
false and undefined.

I am not sure whether the parameters I am passing to this function are
correct. Here is what I am using:

Dim objExpressionEvaluator As
Microsoft.CommerceServer.Interop.Targeting.ExpressionEvaluatorClass = New
Microsoft.CommerceServer.Interop.Targeting.ExpressionEvaluatorClass

If Not (IsDBNull(objExpressionEvaluator.EvalXML(strExpressionXML,
TransactionContext.Current.CartOrderForm.Dictionary))) Then

//Code....It never gets inside as the return value from the function is
always null..

End If


Regards

[ Post a follow-up to this message ]