WPF › Rounded Corner Container › VisualElementHostSizeConverter

VisualElementHostSizeConverter

class.NET 6 / 8 / 10.NET Framework 4.8Binarymission.WPF.Controls.Containers

Combines a bound width and height into the shape the rounded corner container clips the visual it hosts to: a rectangle, or - given a corner radius as a third value - a rounded one, with each corner its own radius.

public class VisualElementHostSizeConverter : IMultiValueConverter

Inherits from / implements: IMultiValueConverter

Remarks

The rounded form exists because the radius cannot be bound on the geometry itself. A geometry is a Freezable and so is not in the element tree, which is what a RelativeSource binding needs to walk; such a binding is dropped with "Cannot find governing FrameworkElement" and the radius stays zero. Binding the border's Clip property instead puts the binding on the border, where it resolves, and the radius arrives here as a value.

Members at a glance

`Convert`	Performs the conversion this converter exists for, as described on `VisualElementHostSizeConverter`.
`ConvertBack`	Not supported. This conversion is one-way, so there is nothing to convert back to.

Methods

Convert

public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)

Performs the conversion this converter exists for, as described on VisualElementHostSizeConverter.

values: The values produced by the bindings in the multi-binding, in order.
targetType: The type the binding target expects.
parameter: The converter parameter given in the binding.
culture: The culture to use for the conversion.

Returns. The converted value.

ConvertBack

public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)

Not supported. This conversion is one-way, so there is nothing to convert back to.

value: The value produced by the binding source.
targetTypes: The types the binding targets expect.
parameter: The converter parameter given in the binding.
culture: The culture to use for the conversion.

Returns. No usable value.