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Windows Forms and WPF Property Mapping

03/30/2017

property mapping [WPF interoperability]

Windows Forms [WPF], interoperability with

Windows Forms [WPF], WPF interoperation

interoperability [WPF], Windows Forms

WindowsFormsHost element property mapping [WPF]

999d8298-9c04-467d-a453-86e41002057d

Windows Forms and WPF Property Mapping

The Windows Forms and [!INCLUDETLA2#tla_winclient] technologies have two similar but different property models. Property mapping supports interoperation between the two architectures and provides the following capabilities:

Makes it easy to map relevant property changes in the host environment to the hosted control or element.
Provides default handling for mapping the most commonly used properties.
Allows easy removal, overriding, or extending of default properties.
Ensures that property value changes on the host are automatically detected and translated to the hosted control or element.

Note

Property-change events are not propagated up the hosting control or element hierarchy. Property translation is not performed if the local value of a property does not change because of direct setting, styles, inheritance, data binding, or other mechanisms that change the value of the property.

Use the xref:System.Windows.Forms.Integration.WindowsFormsHost.PropertyMap%2A property on the xref:System.Windows.Forms.Integration.WindowsFormsHost element and the xref:System.Windows.Forms.Integration.ElementHost.PropertyMap%2A property on xref:System.Windows.Forms.Integration.ElementHost control to access property mapping.

Property Mapping with the WindowsFormsHost Element

The xref:System.Windows.Forms.Integration.WindowsFormsHost element translates default [!INCLUDETLA2#tla_winclient] properties to their Windows Forms equivalents using the following translation table.

Windows Presentation Foundation hosting	Windows Forms	Interoperation behavior
xref:System.Windows.Controls.Control.Background%2A (xref:System.Windows.Media.Brush?displayProperty=nameWithType)	xref:System.Windows.Forms.Control.BackColor%2A (xref:System.Drawing.Color?displayProperty=nameWithType)	The xref:System.Windows.Forms.Integration.WindowsFormsHost element sets the xref:System.Windows.Forms.Control.BackColor%2A property of the hosted control and the xref:System.Windows.Forms.Control.BackgroundImage%2A property of the hosted control. Mapping is performed by using the following rules: - If xref:System.Windows.Controls.Control.Background%2A is a solid color, it is converted and used to set the xref:System.Windows.Forms.Control.BackColor%2A property of the hosted control. The xref:System.Windows.Forms.Control.BackColor%2A property is not set on the hosted control, because the hosted control can inherit the value of the xref:System.Windows.Forms.Control.BackColor%2A property. Note: The hosted control does not support transparency. Any color assigned to xref:System.Windows.Forms.Control.BackColor%2A must be fully opaque, with an alpha value of 0xFF. - If xref:System.Windows.Controls.Control.Background%2A is not a solid color, the xref:System.Windows.Forms.Integration.WindowsFormsHost control creates a bitmap from the xref:System.Windows.Controls.Control.Background%2A property. The xref:System.Windows.Forms.Integration.WindowsFormsHost control assigns this bitmap to the xref:System.Windows.Forms.Control.BackgroundImage%2A property of the hosted control. This provides an effect which is similar to transparency. Note: You can override this behavior or you can remove the xref:System.Windows.Controls.Control.Background%2A property mapping.
xref:System.Windows.FrameworkElement.Cursor%2A	xref:System.Windows.Forms.Control.Cursor%2A	If the default mapping has not been reassigned, xref:System.Windows.Forms.Integration.WindowsFormsHost control traverses its ancestor hierarchy until it finds an ancestor with its xref:System.Windows.FrameworkElement.Cursor%2A property set. This value is translated to the closest corresponding Windows Forms cursor. If the default mapping for the xref:System.Windows.FrameworkElement.ForceCursor%2A property has not been reassigned, the traversal stops on the first ancestor with xref:System.Windows.FrameworkElement.ForceCursor%2A set to `true`.
xref:System.Windows.FrameworkElement.FlowDirection%2A (xref:System.Windows.FlowDirection?displayProperty=nameWithType)	xref:System.Windows.Forms.Control.RightToLeft%2A (xref:System.Windows.Forms.RightToLeft?displayProperty=nameWithType)	xref:System.Windows.FlowDirection.LeftToRight maps to xref:System.Windows.Forms.RightToLeft.No. xref:System.Windows.FlowDirection.RightToLeft maps to xref:System.Windows.Forms.RightToLeft.Yes. xref:System.Windows.Forms.RightToLeft.Inherit is not mapped. xref:System.Windows.FlowDirection.RightToLeft?displayProperty=nameWithType maps to xref:System.Windows.Forms.RightToLeft.Yes?displayProperty=nameWithType.
xref:System.Windows.Controls.Control.FontStyle%2A	xref:System.Drawing.Font.Style%2A on the hosted control's xref:System.Drawing.Font?displayProperty=nameWithType	The set of [!INCLUDETLA2#tla_winclient] properties is translated into a corresponding xref:System.Drawing.Font. When one of these properties changes, a new xref:System.Drawing.Font is created. For xref:System.Windows.FontStyles.Normal%2A: xref:System.Drawing.FontStyle.Italic is disabled. For xref:System.Windows.FontStyles.Italic%2A or xref:System.Windows.FontStyles.Oblique%2A: xref:System.Drawing.FontStyle.Italic is enabled.
xref:System.Windows.Controls.Control.FontWeight%2A	xref:System.Drawing.Font.Style%2A on the hosted control's xref:System.Drawing.Font?displayProperty=nameWithType	The set of [!INCLUDETLA2#tla_winclient] properties is translated into a corresponding xref:System.Drawing.Font. When one of these properties changes, a new xref:System.Drawing.Font is created. For xref:System.Windows.FontWeights.Black%2A, xref:System.Windows.FontWeights.Bold%2A, xref:System.Windows.FontWeights.DemiBold%2A, xref:System.Windows.FontWeights.ExtraBold%2A, xref:System.Windows.FontWeights.Heavy%2A, xref:System.Windows.FontWeights.Medium%2A, xref:System.Windows.FontWeights.SemiBold%2A, or xref:System.Windows.FontWeights.UltraBold%2A: xref:System.Drawing.FontStyle.Bold is enabled. For xref:System.Windows.FontWeights.ExtraLight%2A, xref:System.Windows.FontWeights.Light%2A, xref:System.Windows.FontWeights.Normal%2A, xref:System.Windows.FontWeights.Regular%2A, xref:System.Windows.FontWeights.Thin%2A, or xref:System.Windows.FontWeights.UltraLight%2A: xref:System.Drawing.FontStyle.Bold is disabled.
xref:System.Windows.Controls.Control.FontFamily%2A xref:System.Windows.Controls.Control.FontSize%2A xref:System.Windows.Controls.Control.FontStretch%2A xref:System.Windows.Controls.Control.FontStyle%2A xref:System.Windows.Controls.Control.FontWeight%2A	xref:System.Windows.Forms.Control.Font%2A (xref:System.Drawing.Font?displayProperty=nameWithType)	The set of [!INCLUDETLA2#tla_winclient] properties is translated into a corresponding xref:System.Drawing.Font. When one of these properties changes, a new xref:System.Drawing.Font is created. The hosted Windows Forms control resizes based on the font size. Font size in [!INCLUDETLA2#tla_winclient] is expressed as one ninety-sixth of an inch, and in Windows Forms as one seventy-second of an inch. The corresponding conversion is: Windows Forms font size = [!INCLUDETLA2#tla_winclient] font size * 72.0 / 96.0.
xref:System.Windows.Controls.Control.Foreground%2A (xref:System.Windows.Media.Brush?displayProperty=nameWithType)	xref:System.Windows.Forms.Control.ForeColor%2A (xref:System.Drawing.Color?displayProperty=nameWithType)	The xref:System.Windows.Controls.Control.Foreground%2A property mapping is performed by using the following rules: - If xref:System.Windows.Controls.Control.Foreground%2A is a xref:System.Windows.Media.SolidColorBrush, use xref:System.Windows.Media.SolidColorBrush.Color%2A for xref:System.Windows.Forms.Control.ForeColor%2A. - If xref:System.Windows.Controls.Control.Foreground%2A is a xref:System.Windows.Media.GradientBrush, use the color of the xref:System.Windows.Media.GradientStop with the lowest offset value for xref:System.Windows.Forms.Control.ForeColor%2A. - For any other xref:System.Windows.Media.Brush type, leave xref:System.Windows.Forms.Control.ForeColor%2A unchanged. This means the default is used.
xref:System.Windows.UIElement.IsEnabled%2A	xref:System.Windows.Forms.Control.Enabled%2A	When xref:System.Windows.UIElement.IsEnabled%2A is set, xref:System.Windows.Forms.Integration.WindowsFormsHost element sets the xref:System.Windows.Forms.Control.Enabled%2A property on the hosted control.
xref:System.Windows.Controls.Control.Padding%2A	xref:System.Windows.Forms.Control.Padding%2A	All four values of the xref:System.Windows.Forms.Control.Padding%2A property on the hosted Windows Forms control are set to the same xref:System.Windows.Thickness value. - Values greater than xref:System.Int32.MaxValue are set to xref:System.Int32.MaxValue. - Values less than xref:System.Int32.MinValue are set to xref:System.Int32.MinValue.
xref:System.Windows.UIElement.Visibility%2A	xref:System.Windows.Forms.Control.Visible%2A	- xref:System.Windows.Visibility.Visible maps to xref:System.Windows.Forms.Control.Visible%2A = `true`. The hosted Windows Forms control is visible. Explicitly setting the xref:System.Windows.Forms.Control.Visible%2A property on the hosted control to `false` is not recommended. - xref:System.Windows.Visibility.Collapsed maps to xref:System.Windows.Forms.Control.Visible%2A = `true` or `false`. The hosted Windows Forms control is not drawn, and its area is collapsed. - xref:System.Windows.Visibility.Hidden : The hosted Windows Forms control occupies space in the layout, but is not visible. In this case, the xref:System.Windows.Forms.Control.Visible%2A property is set to `true`. Explicitly setting the xref:System.Windows.Forms.Control.Visible%2A property on the hosted control to `false` is not recommended.

Attached properties on container elements are fully supported by the xref:System.Windows.Forms.Integration.WindowsFormsHost element.

For more information, see Walkthrough: Mapping Properties Using the WindowsFormsHost Element.

Updates to Parent Properties

Changes to most parent properties cause notifications to the hosted child control. The following list describes properties which do not cause notifications when their values change.

For example, if you change the value of the xref:System.Windows.Controls.Control.Background%2A property of the xref:System.Windows.Forms.Integration.WindowsFormsHost element, the xref:System.Windows.Forms.Control.BackColor%2A property of the hosted control does not change.

Property Mapping with the ElementHost Control

The following properties provide built-in change notification. Do not call the xref:System.Windows.FrameworkElement.OnPropertyChanged%2A method when you are mapping these properties:

AutoSize
BackColor
BackgroundImage
BackgroundImageLayout
BindingContext
CausesValidation
ContextMenu
ContextMenuStrip
Cursor
Dock
Enabled
Font
ForeColor
Location
Margin
Padding
Parent
Region
RightToLeft
Size
TabIndex
TabStop
Text
Visible

The xref:System.Windows.Forms.Integration.ElementHost control translates default Windows Forms properties to their [!INCLUDETLA2#tla_winclient] equivalents by using the following translation table.

For more information, see Walkthrough: Mapping Properties Using the ElementHost Control.

Windows Forms hosting	Windows Presentation Foundation	Interoperation behavior
xref:System.Windows.Forms.Control.BackColor%2A (xref:System.Drawing.Color?displayProperty=nameWithType)	xref:System.Windows.Controls.Control.Background%2A (xref:System.Windows.Media.Brush?displayProperty=nameWithType) on the hosted element	Setting this property forces a repaint with an xref:System.Windows.Media.ImageBrush. If the xref:System.Windows.Forms.Integration.ElementHost.BackColorTransparent%2A property is set to `false` (the default value), this xref:System.Windows.Media.ImageBrush is based on the appearance of the xref:System.Windows.Forms.Integration.ElementHost control, including its xref:System.Windows.Forms.Control.BackColor%2A, xref:System.Windows.Forms.Control.BackgroundImage%2A, xref:System.Windows.Forms.Control.BackgroundImageLayout%2A properties, and any attached paint handlers. If the xref:System.Windows.Forms.Integration.ElementHost.BackColorTransparent%2A property is set to `true`, the xref:System.Windows.Media.ImageBrush is based on the appearance of the xref:System.Windows.Forms.Integration.ElementHost control's parent, including the parent's xref:System.Windows.Forms.Control.BackColor%2A, xref:System.Windows.Forms.Control.BackgroundImage%2A, xref:System.Windows.Forms.Control.BackgroundImageLayout%2A properties, and any attached paint handlers.
xref:System.Windows.Forms.Control.BackgroundImage%2A (xref:System.Drawing.Image?displayProperty=nameWithType)	xref:System.Windows.Controls.Control.Background%2A (xref:System.Windows.Media.Brush?displayProperty=nameWithType) on the hosted element	Setting this property causes the same behavior described for the xref:System.Windows.Forms.Control.BackColor%2A mapping.
xref:System.Windows.Forms.Control.BackgroundImageLayout%2A	xref:System.Windows.Controls.Control.Background%2A (xref:System.Windows.Media.Brush?displayProperty=nameWithType) on the hosted element	Setting this property causes the same behavior described for the xref:System.Windows.Forms.Control.BackColor%2A mapping.
xref:System.Windows.Forms.Control.Cursor%2A (xref:System.Windows.Forms.Cursor?displayProperty=nameWithType)	xref:System.Windows.FrameworkElement.Cursor%2A (xref:System.Windows.Input.Cursor?displayProperty=nameWithType)	The Windows Forms standard cursor is translated to the corresponding [!INCLUDETLA2#tla_winclient] standard cursor. If the Windows Forms is not a standard cursor, the default is assigned.
xref:System.Windows.Forms.Control.Enabled%2A	xref:System.Windows.UIElement.IsEnabled%2A	When xref:System.Windows.Forms.Control.Enabled%2A is set, the xref:System.Windows.Forms.Integration.ElementHost control sets the xref:System.Windows.UIElement.IsEnabled%2A property on the hosted element.
xref:System.Windows.Forms.Control.Font%2A (xref:System.Drawing.Font?displayProperty=nameWithType)	xref:System.Windows.Controls.Control.FontFamily%2A xref:System.Windows.Controls.Control.FontSize%2A xref:System.Windows.Controls.Control.FontStretch%2A xref:System.Windows.Controls.Control.FontStyle%2A xref:System.Windows.Controls.Control.FontWeight%2A	The xref:System.Windows.Forms.Control.Font%2A value is translated into a corresponding set of [!INCLUDETLA2#tla_winclient] font properties.
xref:System.Drawing.Font.Bold%2A	xref:System.Windows.Controls.Control.FontWeight%2A on hosted element	If xref:System.Drawing.Font.Bold%2A is `true`, xref:System.Windows.Controls.Control.FontWeight%2A is set to xref:System.Windows.FontWeights.Bold%2A. If xref:System.Drawing.Font.Bold%2A is `false`, xref:System.Windows.Controls.Control.FontWeight%2A is set to xref:System.Windows.FontWeights.Normal%2A.
xref:System.Drawing.Font.Italic%2A	xref:System.Windows.Controls.Control.FontStyle%2A on hosted element	If xref:System.Drawing.Font.Italic%2A is `true`, xref:System.Windows.Controls.Control.FontStyle%2A is set to xref:System.Windows.FontStyles.Italic%2A. If xref:System.Drawing.Font.Italic%2A is `false`, xref:System.Windows.Controls.Control.FontStyle%2A is set to xref:System.Windows.FontStyles.Normal%2A.
xref:System.Drawing.Font.Strikeout%2A	xref:System.Windows.TextDecorations on hosted element	Applies only when hosting a xref:System.Windows.Controls.TextBlock control.
xref:System.Drawing.Font.Underline%2A	xref:System.Windows.TextDecorations on hosted element	Applies only when hosting a xref:System.Windows.Controls.TextBlock control.
xref:System.Windows.Forms.Control.RightToLeft%2A (xref:System.Windows.Forms.RightToLeft?displayProperty=nameWithType)	xref:System.Windows.FrameworkElement.FlowDirection%2A (xref:System.Windows.FlowDirection)	xref:System.Windows.Forms.RightToLeft.No maps to xref:System.Windows.FlowDirection.LeftToRight. xref:System.Windows.Forms.RightToLeft.Yes maps to xref:System.Windows.FlowDirection.RightToLeft.
xref:System.Windows.Forms.Control.Visible%2A	xref:System.Windows.UIElement.Visibility%2A	The xref:System.Windows.Forms.Integration.ElementHost control sets the xref:System.Windows.UIElement.Visibility%2A property on the hosted element by using the following rules: - xref:System.Windows.Forms.Control.Visible%2A = `true` maps to xref:System.Windows.Visibility.Visible. - xref:System.Windows.Forms.Control.Visible%2A = `false` maps to xref:System.Windows.Visibility.Hidden.

19 KiB Raw Blame History

Windows Forms and WPF Property Mapping

Property Mapping with the WindowsFormsHost Element

Updates to Parent Properties

Property Mapping with the ElementHost Control

See also

19 KiB

Raw Blame History