2.4.2.29 postbackModel

The following controls can contain the postbackModel attribute in their XSLT representation:

• Button (section 2.4.1.5)

• Check box (section 2.4.1.6)

• Choice Section (section 2.4.1.21.1)

• Combo box (section 2.4.1.21.2)

• Date picker (section 2.4.1.8)

• Drop-down list box (section 2.4.1.9)

• Hyperlink input (section 2.4.1.21.6)

• List (section 2.4.1.21.7)

• List box (section 2.4.1.13)

• Linked picture (section 2.4.1.21.8)

• Multiple-selection list box (section 2.4.1.21.9)

• Option button (section 2.4.1.14)

• Optional section (section 2.4.1.18)

• Picture button (section 2.4.1.21.10)

• Repeating section (section 2.4.1.15)

• Repeating table (section 2.4.1.16)

• Rich text box (section 2.4.1.17)

• Section (section 2.4.1.18)

• Text box (section 2.4.1.20)

All other controls MUST NOT contain this attribute in their XSLT representations.

The value of this attribute MUST be one of the following:

• always: Send data to the form server when the XML field value in the control is changed.

• auto: Dependent on protocol server implementation. Send data to the form server when the XML field value in the control is changed only if the protocol server implementation requires it.

• never: Never send data to the form server when the XML field value in the control is changed.

If the postbackModel attribute is unspecified, the behavior MUST be the same as an attribute value of "auto".

The following W3C XML Schema ([XMLSCHEMA1] section 2.1) fragment specifies the contents of this element.

 <xsd:element name="postbackModel" type="xsd:string"/>