z:Bind

Used to DataBind to an Expression. If the Expression is just a property-name then it is equivalent to Binding A z:Bind automatically updates if any referenced properties notify they have changed

Usage

TargetProperty = { z:Bind <some expression> [, Source=<some source>] }

Source property

Just like a standard Binding, the data-source is the current BindingContext, unless Source is specified. If this data-source supports INotifyPropertyChanged, changes will be tracked.

z:Bind Expressions

Sample Expression	Source	Notes
{z:Bind Count}	BindingContext	Bind to Count, same as Binding
{z:Bind Count * 2}	BindingContext	Bind to an expression that yields Count * 2
{z:Bind '(Delta.X &lt; 0.2) &amp;&amp; (Delta.X &gt; -0.2)' }	BindingContext	True if (Delta.X < 0.2) && (Delta.X > -0.2)
{z:Bind '(Delta.X LT 0.2) AND (Delta.X GT -0.2)' }	BindingContext	As above, using aliases instead of escape-sequences
{z:Bind (Count * 2) LT 10}	BindingContext	True if (Count * 2) < 10
{z:Bind Sin(Count / 25.0)}	BindingContext	Calls a function (see below)
{z:Bind 'Value LT 0.2', Source={x:Reference MySlider}}	An Element called MySlider	True if MySlider.Value < 0.2