我在我的項目中有兩個頁面。第一頁是關於創建MyPoint對象,然後將它添加到列表,並最終將其保存到獨立存儲如下:獨立存儲 - Windows Phone 8
IsolatedStorageSettings appSettings = IsolatedStorageSettings.ApplicationSettings;
點類:
public class MyPoint
{
public Ellipse Point { get; set; }
public string Tag { get; set; }
public GeoCoordinate Coords { get; set; }
public string City { get; set; }
public string PostalCode { get; set; }
public MyPoint() { }
public MyPoint(Ellipse point, GeoCoordinate cords, string tag, string city, string postalCode)
{
this.Point = point;
this.Coords = cords;
this.Tag = tag;
this.City = city;
this.PostalCode = postalCode;
}
}
保存到獨立存儲方法:
private void SaveAppSettings()
{
try
{
appSettings.Remove("points");
}
catch { }
try
{
appSettings.Add("points", this.points);
appSettings.Save(); // this throws an Exception
}
catch { };
}
Secound`s頁面加載方法
try
{
List<MyPoint> points = (List<MyPoint>)appSettings["points"];
foreach (MyPoint p in points)
{
source.Add(new PointsBook(p.Tag, p.Coords, p.City, p.PostalCode));
}
}
關鍵是
appSettings.Save()thorws是一個例外,即使我評論此行全部工作。我已經保存了分數,我可以通過這兩頁來閱讀它們。
問題是當我關閉應用程序時,我的appSetting有一個字符串「points」,但裏面沒有任何東西。它只有[「鍵」],但沒有[值]。
什麼是appSettings?添加一切在問題 –
請參閱:http://stackoverflow.com/a/13571938/869621 –
無論如何,我從MyPoint屬性中刪除GeoCorrdinate - 仍然無法正常工作 – miechooy