Changes

The following example shows how to evaluate a simple expression without using any parameters and then use the result for visibility binding.

<source lang = "xml">

<ctrls:EvalExpression

x:Name="ExpressionEvaluator"

</tabs>

==== Simple Calculation ====

The following example shows how to use the control with three parameters, where the first two are user input (Editor ''Param0'' and ''Param1'') and the third one is a property from its DataContext (ViewModel). The evaluated ''Result'' is then bound to an Label for output in the UI.

<source lang = "xml">

<Editor x:Name="Expression" Width="200" />

<Editor x:Name="Param0" Width="200" />

</tabs>

==== Setting a calculated Property Value ====

The following example shows how to create a button that adds and stores +5 to the value of a a numeric property named ''MP_EXAMPLE'', every time it is pressed:

<source lang = "xml">

<ctrls:EvalExpression x:Name="Evaluator" Expression="&quot;MP_EXAMPLE|&quot; + (P0 + 2)">

<ctrls:EvalExpressionParameter Name="P0" Value="{Binding Values[MP_EXAMPLE], Converter={StaticResource ToType}, ConverterParameter='System.Int32'}" />

</tabs>

== Conditional Statement ==

</tabs>

== Parameters ==