VisualStateManager.GoToState 在 OnNavigatedTo 方法中返回 false [英] VisualStateManager.GoToState returns false in OnNavigatedTo method

问题描述

它在 OnNavigatedTo 中不起作用，但它在 OnNavigatedTo 完成后起作用.

It's not working in OnNavigatedTo but it works after OnNavigatedTo finishes.

protected override void OnNavigatedTo(Windows.UI.Xaml.Navigation.NavigationEventArgs e)
{
    base.OnNavigatedTo(e);
    //Here result is false
    bool result = VisualStateManager.GoToState(btn_reset, "Normal", false);
}


private void Button_Click(object sender, RoutedEventArgs e)
{
   //Here result is true
  bool result = VisualStateManager.GoToState(btn_reset, "Normal", false);
}

知道 OnNavigatedTo 有什么问题我尝试设置不同的状态，但它们都给我相同的结果.

Any idea what's wrong in OnNavigatedTo I tried to set different states but they all are giving me same result.

我想在 OnNavigatedTo 方法中或在显示视图之前设置初始状态

I want to set the initial state in OnNavigatedTo method or before view is shown

推荐答案

我已经在 Loaded 事件中编写了这段代码并且它正在工作.

I have written this code in Loaded event and it's working.

protected override void OnNavigatedTo(Windows.UI.Xaml.Navigation.NavigationEventArgs e)
{
    base.OnNavigatedTo(e);
    Loaded += ScreenLoaded;
}

private void ScreenLoaded(object sender, RoutedEventArgs e)
{
    btn_reset.IsEnabled = false;
    bool result = VisualStateManager.GoToState(btn_reset, "Normal", false);
}

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