Multibinding converterparameter

Both of those will be passed as a parameter to a MultiBinding Converter, and you can use them to base your decision of the target value. My last blog post shows how to do a MultiBinding.

You are absolutely right. Multi binding would solve the problem, using the ConverterPatameter was just a workaround. Actually I solved my problem with a bit of logical thinking instead: I was using a StackPanel so changing it to a Grid solved my resizing problems. Ask a question. Quick access. Search related threads.

Remove From My Forums. Answered by:. IsChecked property uses a TwoWay binding. Therefore, the ConvertBack method of the AllTrueMultiConverter instance is executed when the CheckBox is unchecked by the user, which sets the source binding values to the value of the CheckBox. IsChecked property. A MultiBinding can format any multi-binding result that's displayed as a string, with the StringFormat property. This property can be set to a standard. NET formatting string, with placeholders, that specifies how to format the multi-binding result:.

In this example, the StringFormat property combines the three bound values into a single string that's displayed by the Label. The number of parameters in a composite string format can't exceed the number of child Binding objects in the MultiBinding. When setting the Converter and StringFormat properties, the converter is applied to the data value first, and then the StringFormat is applied.

For more information about string formatting in Xamarin. Forms, see Xamarin. Forms String Formatting. Data bindings can be made more robust by defining fallback values to use if the binding process fails. UnsetValue , which indicates that the converter did not produce a value. For more information about binding fallbacks, see Xamarin.

Forms Binding Fallbacks. MultiBinding objects can be nested so that multiple MultiBinding objects are evaluated to return a value through an IMultiValueConverter instance:.

IsChecked property to true , provided that all of the Binding objects in the inner MultiBinding object evaluate to true , or provided that the Binding object in the outer MultiBinding object evaluates to true. MultiBinding objects support relative bindings, which provide the ability to set the binding source relative to the position of the binding target:. In this example, the TemplatedParent relative binding mode is used to bind from within a control template to the runtime object instance to which the template is applied.

The Expander , which is the root element of the ControlTemplate , has its BindingContext set to the runtime object instance to which the template is applied. Therefore, the Expander and its children resolve their binding expressions, and Binding objects, against the properties of the CardViewExpander object. IsVisible property to true provided that the two Binding objects evaluate to true.

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