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我檢索畫布的可見性屬性的狀態有一個小問題。當我檢索頁面狀態時,畫布始終可見,即使它在被墓碑化時被摺疊。我嘗試了一堆,如果其他和切換語句,但沒有運氣。我如何解決這個錯誤?預先感謝任何想要幫助的人!墓碑的畫布可見性屬性
下面的代碼:
private const string coachPivotKey = "CoachPivotKey";
private const string isVisibleKey = "IsVisibleKey";
protected override void OnNavigatedFrom(System.Windows.Navigation.NavigationEventArgs e)
{
this.SaveState(coachPivotKey, coachPivot.SelectedIndex);
this.SaveState(isVisibleKey, canvasNotes.Visibility);
}
protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
{
coachPivot.SelectedItem = coachPivot.Items[this.LoadState<int>(coachPivotKey)];
canvasNotes.Visibility = this.LoadState<Visibility>(isVisibleKey);
base.OnNavigatedTo(e);
}
在LoadState()和即時存檔()方法是在不同的類。這些我從視頻上我看着墓碑了:
public static void SaveState(this PhoneApplicationPage phoneApplicationPage, string key, object value)
{
if (phoneApplicationPage.State.ContainsKey(key))
{
phoneApplicationPage.State.Remove(key);
}
phoneApplicationPage.State.Add(key, value);
}
public static T LoadState<T>(this PhoneApplicationPage phoneApplicationPage, string key)
{
if (phoneApplicationPage.State.ContainsKey(key))
{
return (T)phoneApplicationPage.State[key];
}
return default(T);
}
當您通過調試時,是狀態字典中可見性的值? – 2012-01-06 21:06:42
是的兩個可見和摺疊值轉到SaveState()字典 – 2012-01-06 21:20:33
但你能看到它們在LoadState裏面(即它們實際上是否正確存儲) – 2012-01-06 21:21:30