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Jochem
2021-01-18 11:11:11 -08:00
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dotnet-desktop-guide/net/wpf/data/data-binding-overview.md
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@@ -89,7 +89,7 @@ This figure illustrates the different types of data flow:
- <xref:System.Windows.Data.BindingMode.OneWay> binding causes changes to the source property to automatically update the target property, but changes to the target property are not propagated back to the source property. This type of binding is appropriate if the control being bound is implicitly read-only. For instance, you may bind to a source such as a stock ticker, or perhaps your target property has no control interface provided for making changes, such as a data-bound background color of a table. If there is no need to monitor the changes of the target property, using the <xref:System.Windows.Data.BindingMode.OneWay> binding mode avoids the overhead of the <xref:System.Windows.Data.BindingMode.TwoWay> binding mode.
- <xref:System.Windows.Data.BindingMode.TwoWay> binding causes changes to either the source property or the target property to automatically update the other. This type of binding is appropriate for editable forms or other fully interactive UI scenarios. Most properties default to <xref:System.Windows.Data.BindingMode.OneWay> binding, but some dependency properties (typically properties of user-editable controls such as the <xref:System.Windows.Controls.TextBox.Text?displayProperty=nameWithType> and [CheckBox.IsChecked](xref:System.Windows.Controls.Primitives.ToggleButton.IsChecked) default to <xref:System.Windows.Data.BindingMode.TwoWay> binding. A programmatic way to determine whether a dependency property binds one-way or two-way by default is to get the property metadata with <xref:System.Windows.DependencyProperty.GetMetadata%2A?displayProperty=nameWithType> and then check the Boolean value of the <xref:System.Windows.FrameworkPropertyMetadata.BindsTwoWayByDefault%2A?displayProperty=nameWithType> property.
- <xref:System.Windows.Data.BindingMode.TwoWay> binding causes changes to either the source property or the target property to automatically update the other. This type of binding is appropriate for editable forms or other fully interactive UI scenarios. Most properties default to <xref:System.Windows.Data.BindingMode.OneWay> binding, but some dependency properties (typically properties of user-editable controls such as the <xref:System.Windows.Controls.TextBox.Text?displayProperty=nameWithType> and [CheckBox.IsChecked](xref:System.Windows.Controls.Primitives.ToggleButton.IsChecked)) default to <xref:System.Windows.Data.BindingMode.TwoWay> binding. A programmatic way to determine whether a dependency property binds one-way or two-way by default is to get the property metadata with <xref:System.Windows.DependencyProperty.GetMetadata%2A?displayProperty=nameWithType> and then check the Boolean value of the <xref:System.Windows.FrameworkPropertyMetadata.BindsTwoWayByDefault%2A?displayProperty=nameWithType> property.
- <xref:System.Windows.Data.BindingMode.OneWayToSource> is the reverse of <xref:System.Windows.Data.BindingMode.OneWay> binding; it updates the source property when the target property changes. One example scenario is if you only need to reevaluate the source value from the UI.