在WPF中自動註銷後恢復上一個會話

Question

我想在我的WPF應用程序中實現功能，如有人登錄並且他正在填寫註冊表單，但在某些時候帳戶自動註銷（已實現此功能）後，然後當用戶再次登錄時，那麼如何在相同的舊狀態下顯示他的應用程序，即半填充表格或以前用他的帳戶進行的任何操作，我正在網上查找，但無法找到任何幫助。

Answer 1

有沒有快速簡單的方法來做到這一點......但是，我會這樣做。

使用MVVM模式。當用戶在視圖中輸入信息時，您的ViewModel將獲取數據。當用戶註銷時，您的應用程序應該將您的ViewModel序列化爲您喜歡的格式。我的是JSON。使用JSON.NET，您可以將視圖模型序列化爲文件。

在啓動時，您將反序列化文件並恢復您的視圖模型。瞧，你的看法應該回到他們關閉應用程序時的位置。

Answer 2

I have made it- 
MainWindow.xaml 
<Window x:Class="SerializeDeSerialize.MainWindow" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     xmlns:Nikita="clr-namespace:SerializeDeSerialize" 
     Title="MainWindow" Height="350" Width="525" Closed="Window_Closed_1" Loaded="Window_Loaded_1"> 
    <Window.DataContext> 
     <Nikita:Movie></Nikita:Movie> 
    </Window.DataContext> 
    <Grid> 
     <Grid.RowDefinitions> 
      <RowDefinition></RowDefinition> 
      <RowDefinition></RowDefinition> 
      <RowDefinition></RowDefinition> 
      <RowDefinition></RowDefinition> 
      <RowDefinition></RowDefinition> 
     </Grid.RowDefinitions> 
     <Grid.ColumnDefinitions> 
      <ColumnDefinition></ColumnDefinition> 
      <ColumnDefinition></ColumnDefinition> 

     </Grid.ColumnDefinitions> 

     <Label Name="lblTitle" Content="Title:" Grid.Row="0" Grid.Column="0" Margin="10,25,63,10" HorizontalAlignment="Left" Width="164"></Label> 
     <TextBox Grid.Row="0" Name="txtTitle" Grid.Column="1" Margin="10,25,63,10" Text="{Binding Title}"></TextBox> 
     <Label Grid.Row="1" Name="lblRating" Content="Rating:" Grid.Column="0" Margin="10,25,63,10" HorizontalAlignment="Left" Width="164"></Label> 
     <TextBox Grid.Row="1" Name="txtRating" Grid.Column="1" Margin="10,25,63,10" Text="{Binding Rating}"></TextBox> 
     <Label Grid.Row="2" Name="lblReleaseDate" Content="Release Date:" Grid.Column="0" Margin="10,25,63,10" HorizontalAlignment="Left" Width="164"></Label> 
     <TextBox Grid.Row="2" Name="txtReleaseDate" Grid.Column="1" Margin="10,25,63,10" Text="{Binding ReleaseDate}"></TextBox> 

      <Button Grid.Row="3" Content="Window1" Margin="66,36,69,10" Click="Button_Click_1"></Button> 
     <Button Grid.Row="4" Content="Window2" Margin="66,36,69,10" Click="Button_Click_2"></Button> 

    </Grid> 
</Window> 

MainWindow.xaml.cs 


using System; 
using System.Collections.Generic; 
using System.IO; 
using System.Linq; 
using System.Text; 
using System.Windows; 
using System.Windows.Controls; 
using System.Windows.Data; 
using System.Windows.Documents; 
using System.Windows.Input; 
using System.Windows.Media; 
using System.Windows.Media.Imaging; 
using System.Windows.Navigation; 
using System.Windows.Shapes; 
using System.Xml.Serialization; 

namespace SerializeDeSerialize 
{ 
    /// <summary> 
    /// Interaction logic for MainWindow.xaml 
    /// </summary> 
    public partial class MainWindow : Window 
    { 
     SerializeDeSerialize.Movie mv = new Movie(); 
     static Movie mm = new Movie(); 

     public MainWindow() 
     { 
      InitializeComponent(); 

      DataContext = mv; 

     } 

     private void Window_Closed_1(object sender, EventArgs e) 
     { 
      SerializeToXML(mv); 
     } 

     static public void SerializeToXML(Movie movie) 
     { 
      XmlSerializer serializer = new XmlSerializer(typeof(Movie)); 
      TextWriter textWriter = new StreamWriter(@"C:\Users\398780\Desktop\Nikita\movie.xml"); 
      serializer.Serialize(textWriter, movie); 
      textWriter.Close(); 
     } 

     private void Window_Loaded_1(object sender, RoutedEventArgs e) 
     { 
      mm=DeserializeFromXML(); 
      txtTitle.Text = mm.Title; 
      txtRating.Text =Convert.ToString(mm.Rating); 
      txtReleaseDate.Text = Convert.ToString(mm.ReleaseDate); 

     } 

     static Movie DeserializeFromXML() 
     { 
      XmlSerializer deserializer = new XmlSerializer(typeof(Movie)); 
      TextReader textReader = new StreamReader(@"C:\Users\398780\Desktop\Nikita\movie.xml"); 
      mm=(Movie)deserializer.Deserialize(textReader); 

      textReader.Close(); 

      return mm; 
     } 

     private void Button_Click_1(object sender, RoutedEventArgs e) 
     { 
      Window1 win1 = new Window1(); 
      win1.Show(); 
     } 

     private void Button_Click_2(object sender, RoutedEventArgs e) 
     { 
      Window2 win2 = new Window2(); 
      win2.Show(); 
     } 
    } 
} 

MVVM-movie.cs 

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 

namespace SerializeDeSerialize 
{ 
    public class Movie 
    { 
     private string _title; 
     private int _rating; 
     private DateTime _releaseDate; 

     public Movie() 
     { 
     } 
     public string Title 
     { 
      get { return _title; } 
      set { _title = value; } 
     } 

     public int Rating 
     { 
      get { return _rating; } 
      set { _rating = value; } 
     } 

     public DateTime ReleaseDate 
     { 
      get { return _releaseDate; } 
      set { _releaseDate = value; } 
     } 
    } 
} 

Please check..it is same as you told or not?