For this example (Figure 4), you will model a read-only indexer (thus it has only a get accessor) in the DrawingSurface class.

对于本实例(图4)，您将对drawingsurface类中的只读索引器建模(因而它只有get存取器)。

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Then expose these through set and get accessor functions, making sure that the set functions publish their changes to the property change support mechanism.

然后通过set和get存取器函数公开这些字段，确保set函数将其更改发布到属性更改支持机制中。

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In general, you put demands for less restrictive permissions on the get accessor rather than on the set accessor, unless the property holds sensitive information, such as a password.

一般而言，放入取得存取子的需求其使用权限限制会少于设定存取子，含有敏感资讯的属性除外，如密码。

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