expression Attribute (calculatedField Element)
Contains the formula, in the form of an XPath expression, to be evaluated. The result is stored in the target location.
Type
xsd:string
Parent Elements
| Element | Description |
|---|---|
| calculatedField | Defines an individual calculation, including the formula, when the calculation is to be performed, and where the result will be stored. |
Definition
<xsd:attribute name="expression" type="xsd:string" use="required" ></xsd:attribute>
Remarks
Note This item is not supported when the Disable Service Pack features option on the Advanced tab of the Options dialog box in InfoPath is selected or when Microsoft Office 2003 Editions Service Pack 1 or later is not installed. Any form defined by a form definition file (.xsf) that includes this item cannot be opened in InfoPath when service pack features are disabled or unavailable.
Example
The following is an example of the expression attribute as it is used in the calculatedField element:
<xsf:calculations>
<xsf:calculatedField
target="/my:myFields/my:average"
expression="xdMath:Avg(../my:expenses/my:expense/my:amount)"
refresh="onChange" />
</xsf:calculations>