WP8 独立存储 总结2

private void saveGameToIsolatedStorage(string message)
{
　　using(IsolatedStorageFile isf =
　　IsolatedStorageFile.GetUserStoreForApplication())
　　{
　　　　using(IsolatedStorageFileStreamrawStream= isf.CreateFile("MyFile.store"))
　　　　{
　　　　　　StreamWriterwriter = newStreamWriter(rawStream);
　　　　　　writer.WriteLine(message); // save the message
　　　　　　writer.Close();
　　　　}
  　}
}

 1 private string loadString()
 2 {
 3     stringresult = null;
 4     using(IsolatedStorageFileisf = IsolatedStorageFile.GetUserStoreForApplication())
 5     {
 6         if(isf.FileExists("Myfile.store")
 7     　　{
 8     　　　　using(IsolatedStorageFileStreamrawStream = isf.OpenFile(filename, System.IO.FileMode.Open)) 
 9          　　　　{
　　　　　　　　　　　　　　StreamReaderreader = newStreamReader(rawStream);
10 　　　　　　　　　　　　result = reader.ReadLine();
11 　　　　　　　　　　reader.Close();
12 　　　　　　　　　　}
 　　　　　　}
13 　　 }
14 　　 return result;
15 }        

 1 namespace PhoneApp1  
 2 {  
 3     public partial class AddPage : PhoneApplicationPage  
 4     {  
 5         public AddPage()  
 6         {  
 7             InitializeComponent();  
 8         }  
 9         protected override void OnNavigatedTo(NavigationEventArgs e)  
10         {  
11             base.OnNavigatedTo(e);  
12             if (this.State.ContainsKey("IncompleteEntry"))  
13             {  
14                 this.logtext.Text = this.State["IncompleteEntry"] as string;  
15             }  
16         }  
17         protected override void OnNavigatedFrom(NavigationEventArgs e)  
18         {  
19             if (e.NavigationMode != System.Windows.Navigation.NavigationMode.Back &&  
20                 e.NavigationMode != System.Windows.Navigation.NavigationMode.Forward)  
21             {  
22                 this.State["IncompleteEntry"] = this.logtext.Text;  
23             }  
24             base.OnNavigatedFrom(e);  
25         }  
26   
27   
28         private void ApplicationBarIconButton_Click(object sender, EventArgs e)  
29         {  
30             SaveEntry();  
31   
32   
33             if (NavigationService.CanGoBack)  
34             {  
35                 NavigationService.GoBack();  
36             }  
37         }  
38   
39   
40         private void cancel_Click(object sender, EventArgs e)  
41         {  
42             if (NavigationService.CanGoBack)  
43             {  
44                 NavigationService.GoBack();  
45             }  
46         }  
47   
48   
49         private async void SaveEntry()  
50         {  
51             string timeshow = System.DateTime.Now + System.Environment.NewLine;  
52   
53   
54             App thisapp = App.Current as App;//利用APP属性传递值  
55   
56   
57             thisapp.logdata = FileStorageOperation.LoadFromIsolatedStorage();  
58             thisapp.logdata = thisapp.logdata + timeshow + logtext.Text + System.Environment.NewLine;  
59             FileStorageOperation.SavetoIsolatedStorage(thisapp.logdata);  
60   
61   
62         }  
63     }  
64 }  

1 public string logdata
2         {
3             set;
4             get;
5         }

 1 protected override void OnNavigatedTo(NavigationEventArgs e)
 2         {
 3             base.OnNavigatedTo(e);
 4            
 5 
 6 
 7             App thisapp = App.Current as App;
 8 
 9 
10             thisapp.logdata = FileStorageOperation.LoadFromIsolatedStorage();
11 
12 
13             showblock.Text = thisapp.logdata;
14         }