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WPApp的所有网页都访问本地数据库
原标题:accessing the local database in all the pages of the WP app

我从" 当地视窗电话数据库 中学习。从中我学会了如何在我的应用程序中创建本地数据库,并将数据拉到页面上。

我现在要找的不是在一页中显示数据,而是在我的应用程序的三页中显示数据。 那么,我有什么办法这样做呢? 我可以在 App. xaml 中制作一个对象,然后在页面中访问它吗?

请你劝告我

谢谢

问题回答

所有的方法都归结于你对建筑的看法 以及你想要你的应用程序有多可测试

虽然您 可以 引用您应用程序对象上的数据背景, 但您会再次增加视图模型和视图之间的联系; 可以说在视图中, 视觉模型中没有任何东西需要了解任何关于视图中的任何信息( 以及位于所有 xaml 都算作视图一部分的营地 ) 。 考虑到这一点, 另一种选择是在您的视图模型( 甚至是您的模型) 中, 有某种静态的分类, 这是一种暴露应用级别对象的静态分类( 以单位测试友好的方式, 甚至可能可以在平台间流出), 并允许您的任何视图模型访问该数据文本, 并构建您的任何模型, 等等 。





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