fx:once markup extension, $x

The fx:once markup extension resolves a value and assigns it to a property. Even if the source is an ObservableValue, no binding is established and the value is not updated after the initial assignment.

Its prefix notation is $x, where x is the binding path.

Properties

Property	Description
path	A string that specifies the binding path. This is the default property.

Usage

<!-- Element notation -->
<object>
    <property>
        <fx:once path="myPath"/>
    </property>
<object>

<!-- Attribute notation -->
<object property="{fx:once path=myPath}"/>

<!-- Attribute notation with omitted "path" -->
<object property="{fx:once myPath}"/>

<!-- Prefix notation -->
<object property="$myPath"/>