我似乎无法真正控制焦点：
XAML:
<Button Command={Binding SetGridToVisibleCommand} />
<Grid Visibility="{Binding IsGridVisible, Converter={con:VisibilityBooleanConverter}}">
<TextBox Text={Binding MyText} IsVisibleChanged="TextBox_IsVisibleChanged" />
</Grid>
XAML.cs:
private void TextBox_IsVisibleChanged(Object sender, DependencyPropertyChangedEventArgs e)
{
UIElement element = sender as UIElement;
if (element != null)
{
Boolean success = element.Focus(); //Always returns false and doesn't take focus.
}
}
The ViewModel does it's job of setting the IsGridVisible to true, and the converter does it's job by converting that value to
Visibility.Visible (I snooped it).
Not all UIElements默认可以聚焦，你尝试过设置Focusable http://msdn.microsoft.com/en-us/library/system.windows.uielement.focusable.aspx在尝试之前为真Focus()?
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