什么是各种WPF绑定模式？ [英] What are the various WPF binding modes?

问题描述

我不明白WPF中的各种数据绑定模式，例如：

I do not understand the various data binding modes in WPF, such as:

• 单向


• 双向


• 一次性


• 等...

• One-Way
• Two-Way
• One-Time
• etc...

这些模式是什么意思？

应该什么时候使用？

推荐答案

• OneWay 您希望bound属性更新用户界面。


• TwoWay ：这与 OneWay的行为相同和 OneWayToSource 组合。绑定属性将更新用户界面，并且用户界面中的更改将更新绑定属性（您将使用 TextBox 或复选框。


• OneTime ：这与 OneWay的行为相同，只会更新一次用户界面。这应该是您默认的绑定选择（由于各种原因我将不会在这里详细说明），如果您实际需要额外的功能，您应该只使用其他类型的绑定。


• OneWayToSource ：这与 OneWay 相反 - 用户界面值更改更新绑定属性。


• OneWay: Use this when you want the bound property to update the user interface.
• TwoWay: This has the same behavior as OneWay and OneWayToSource combined. The bound property will update the user interface, and changes in the user interface will update the bound property (You would use this with a TextBox or a Checkbox for example.)
• OneTime: This has the same behavior as OneWay except it will only update the user interface one time. This should be your default choice for binding (for various reasons I won't elaborate on here), you should only use other types of bindings if you actually need the extra functionality.
• OneWayToSource: This is the opposite of OneWay -- user interface value changes update the bound property.

如果您没有指定任何内容，那么行为将取决于您使用的控件。

If you don't specify anything, then the behavior will depend on the control that you are using.

有关详细信息，请参阅 BindingMode 枚举MSDN 。

For more info, see BindingMode enum on MSDN.

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