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
{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 < 0.2) && (Delta.X > -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
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