下列范例包含这个回呼的实作，以验证自订相依性属性值的范围。

The following example includes an implementation of this callback to validate a range of values for a custom dependency property.

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委派可用于定义回呼方法。

Delegates can be used to define callback methods.

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委派可用于定义回呼方法。

Delegates can be used to define callback methods.

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