如何刷新数据绑定列表框? [英] How do I refresh a data-bound listbox?

问题描述

我有一个ListBox，其项目绑定到在一个表的一行中找到的数据，但是在通过关系链接的外部表中显示一些数据.我有一个编辑窗口，与选定的ListBoxItem相关联的DataRowView传递到该窗口，从那里我可以编辑文本字段和ID列，这些列和ID列指定该关系应从中获取其他数据的行.当我直接更改在ListBoxItem中显示的文本字段时，只要将更改提交给源，该项目就会在ListBoxItem中更新.但是，如果更改ID字段，从外部行获取的ListBoxItem中的字段不会重新映射到新关系.

如何使ListBox更新其显示的数据?

I have a ListBox whose items are bound to data found in a row of one table, but displays some data in foreign tables linked by relations. I have an edit window to which I pass the DataRowView associated with the selected ListBoxItem, and from there I can edit text fields and the ID columns that specify the row that the relation should grab additional data from. When I directly change a text field that is displayed in the ListBoxItem, that item updates in the ListBoxItem as soon as the change is committed to the source. However, if I change the ID fields, the fields in the ListBoxItem grabbed from the foreign row do not re-map to the new relation.

How can I cause the ListBox to update its displayed data?

推荐答案

只需再次设置ListBox.DataContext.

Just set ListBox.DataContext again.

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