傳遞兩個頁面之間的值wpf

我正在學習c＃，並且我被要求使用WPF進行項目工作，但我不太清楚。我們也使用MUI。我正在嘗試實現一個非常基本的任務。我有兩頁叫ClientRNG.xaml和ServerRNG.xaml。在ClientRNG.xaml我有兩個按鈕和兩個文本框，當每個按鈕被按下時，一個隨機數字被生成並出現在一個文本框中。在ServerRNG中只有一個按鈕和一個文本框，具有與上述相同的功能。所以我最終會得到三個不同的隨機數，一個在ServerRNG.xaml和兩個在ClientRNG。我想要做的是將這些隨機數字傳遞到另一個頁面，稱爲SSL.xaml。傳遞兩個頁面之間的值wpf

的頁面在MainWindow.xml創建：

<mui:ModernWindow.MenuLinkGroups> 
    <mui:LinkGroup DisplayName="network security"> 
     <mui:LinkGroup.Links> 
      <mui:Link DisplayName="Home" Source="/Pages/Home.xaml" /> 
      <mui:Link DisplayName="RNG" Source="/Pages/ClientRNG.xaml" /> 
      <mui:Link DisplayName="3DES" Source="/Pages/3des.xaml" /> 
      <mui:Link DisplayName="RSA" Source="/Pages/RSA.xaml" /> 
      <mui:Link DisplayName="SHA-1" Source="/Pages/sha1.xaml" /> 
      <mui:Link DisplayName="PKI Certificates" Source="/Pages/pki.xaml" /> 
      <mui:Link DisplayName="SSL" Source="/Pages/SSL.xaml" /> 

     </mui:LinkGroup.Links> 
    </mui:LinkGroup> 
    <mui:LinkGroup DisplayName="settings" GroupName="settings"> 
     <mui:LinkGroup.Links> 
      <mui:Link DisplayName="software" Source="/Pages/Settings.xaml" /> 
     </mui:LinkGroup.Links> 
    </mui:LinkGroup> 
</mui:ModernWindow.MenuLinkGroups> 

<mui:ModernWindow.TitleLinks> 
    <mui:Link DisplayName="settings" Source="/Pages/Settings.xaml" /> 
</mui:ModernWindow.TitleLinks>

守則ClientRNG：

namespace NetworkSecuritySSLTest.Pages 
{ 
/// <summary> 
/// Interaction logic for RNG.xaml 
/// </summary> 
public partial class ClientRNG : UserControl 
{ 
    public ClientRNG() 
    { 
     InitializeComponent(); 
    } 

    private void Button_Click(object sender, RoutedEventArgs e) 
    { 
     Random r = new Random(1); 
     int number = r.Next(0, 100); 
     r1Out.Text = number.ToString(); 
     SharingManager.GlobalValue = number; 
    } 

    private void Button_Click_1(object sender, RoutedEventArgs e) 
    { 
     Random r = new Random(3); 
     int number = r.Next(0, 100); 
     pmsOutC.Text = number.ToString(); 
    }

這裏是我在ServerRNG代碼：

namespace NetworkSecuritySSLTest.Pages 
{ 
/// <summary> 
/// Interaction logic for RNG.xaml 
/// </summary> 
public partial class ServerRNG : UserControl 
{ 

    private SplitPage1 sp; 



    public ServerRNG() 
    { 

     InitializeComponent(); 

    } 

    private void Button_Click_1(object sender, RoutedEventArgs e) 
    { 
     Random r = new Random(2); 
     int number = r.Next(0, 100); 
     r2Out.Text = number.ToString(); 
     SharingManager.GlobalValue = number; 
    } 
}

}

，這是背後SSL類的代碼

namespace NetworkSecuritySSLTest.Pages 
{ 
/// <summary> 
/// Interaction logic for SplitPage1.xaml 
/// </summary> 
public partial class SplitPage1 : UserControl 
{ 
    private int r1FromClient; 
    public SplitPage1() 
    { 
     InitializeComponent(); 
     SharingManager.ValueChanged += UpdateTextBox1; 
     SharingManager.ValueChanged += UpdateTextBox2; 

    } 

    public void UpdateTextBox1(object sender, NumericEventArgs e) 
    { 
     r1SSLBox.Text = e.Value.ToString(); // Update textBox 
    } 

    public void UpdateTextBox2(object sender, NumericEventArgs e) 
    { 
     r2SSLBox.Text = e.Value.ToString(); // Update textBox 
    } 

}

} 這裏是XAML： 'SplitPage1'

<UserControl x:Class="NetworkSecuritySSLTest.Pages.SplitPage1" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
     xmlns:mui="http://firstfloorsoftware.com/ModernUI" 
     mc:Ignorable="d" 
     d:DesignWidth="766.507" Height="535"> 
<Grid Style="{StaticResource ContentRoot}"> 
    <Grid.ColumnDefinitions> 
     <ColumnDefinition Width="*"/> 
     <ColumnDefinition Width="6"/> 
     <ColumnDefinition Width="*"/> 
    </Grid.ColumnDefinitions> 

    <ScrollViewer> 
     <StackPanel> 
      <TextBlock Text="CLIENT" Style="{StaticResource Heading2}" /> 
      <TextBlock x:Name="hello" Text="Hello Server. This is my Random Number and my Security Capabilities:" FontSize="12" FontStyle="Italic" Margin="0,10,0,0" UseLayoutRounding="False" TextWrapping="Wrap" /> 
      <TextBlock x:Name="helloCont" Text="" FontSize="12" FontStyle="Italic" Margin="0,0,0,0" /> 
      <TextBox x:Name ="r1SSLBox" HorizontalAlignment="Left" Height="57" Margin="10,88,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120" RenderTransformOrigin="0.498,0.404"/> 
      <TextBox x:Name ="r2SSLBox" HorizontalAlignment="Left" Height="57" Margin="10,88,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120" RenderTransformOrigin="0.498,0.404"/> 
      <TextBlock x:Name="VerifyDC" Text="I need to verify your Digital Certificate:" FontSize="12" FontStyle="Italic" Margin="0,10,0,0" /> 
      <TextBlock x:Name="VerifyCont" Text="" FontSize="12" FontStyle="Italic" /> 

      <TextBlock x:Name="MSK" Text="My Master Key is:" FontSize="12" FontStyle="Italic" Margin="0,10,0,0" /> 
      <TextBlock x:Name="MSKCont" Text="" FontSize="12" FontStyle="Italic" /> 

     </StackPanel> 
    </ScrollViewer> 
    <GridSplitter Grid.Column="1" /> 
    <ScrollViewer Grid.Column="2 " Margin="{StaticResource SplitRight}"> 
     <StackPanel> 
      <TextBlock Text="SERVER" Style="{StaticResource Heading2}" /> 
      <TextBlock Text="Content goes here" /> 
     </StackPanel> 
    </ScrollViewer> 
    <GridSplitter Grid.ColumnSpan="3" HorizontalAlignment="Left" Margin="0,23,0,0" VerticalAlignment="Top" Width="735"/> 
    <Button Content="Man-In-The-Middle-Attack" HorizontalAlignment="Left" VerticalAlignment="Top" Width="209" RenderTransformOrigin="0.055,0.397" Height="40" Margin="255,451,0,0" Grid.ColumnSpan="3" /> 

</Grid>

ClientRNG

<UserControl x:Class="NetworkSecuritySSLTest.Pages.ClientRNG" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
     xmlns:mui="http://firstfloorsoftware.com/ModernUI" 
     mc:Ignorable="d" 
     d:DesignWidth="766.507" Height="535"> 
<Viewbox Stretch="None"> 
    <Grid Style="{StaticResource ContentRoot}" Height="301" Margin="0" Width="435"> 
     <Grid.ColumnDefinitions> 
      <ColumnDefinition/> 
      <ColumnDefinition Width="0*"/> 
     </Grid.ColumnDefinitions> 

     <!-- TODO: set @SelectedSource --> 

     <mui:ModernTab Layout="Tab" Margin="0,52,0,0"> 
      <mui:ModernTab.Links> 
       <!-- TODO: set @Source --> 
       <mui:Link DisplayName="Client" /> 
       <mui:Link DisplayName="Server" Source="/Pages/ServerRNG.xaml" /> 
      </mui:ModernTab.Links> 
     </mui:ModernTab> 

     <Button Content="GENERATE R# 1" HorizontalAlignment="Left" VerticalAlignment="Top" Width="120" RenderTransformOrigin="0.055,0.397" Height="26" Margin="10,52,0,0" FontSize="11" Click="Button_Click" /> 
     <TextBox Name ="r1Out" HorizontalAlignment="Left" Height="57" Margin="10,88,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120" RenderTransformOrigin="0.498,0.404"/> 

     <Button Content="GENERATE MS" HorizontalAlignment="Left" VerticalAlignment="Top" Width="119" RenderTransformOrigin="0.055,0.397" Height="26" Margin="306,52,0,0" Click="Button_Click_2" /> 
     <TextBox Name ="msOutC" HorizontalAlignment="Left" Height="57" Margin="306,88,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="119" RenderTransformOrigin="0.498,0.404"/> 

     <Button Content="GENERATE PMS" HorizontalAlignment="Left" VerticalAlignment="Top" Width="133" RenderTransformOrigin="0.055,0.397" Height="26" Margin="151,52,0,0" Click="Button_Click_1" /> 
     <TextBox Name ="pmsOutC" HorizontalAlignment="Left" Height="57" Margin="151,88,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="133" RenderTransformOrigin="0.498,0.404"/> 


     <Label Content="Random Number Generator" HorizontalAlignment="Left" Height="19" Margin="10,10,0,0" VerticalAlignment="Top" Width="415" FontWeight="Bold"/> 


    </Grid> 

</Viewbox>

和ServerRNG

<UserControl x:Class="NetworkSecuritySSLTest.Pages.ServerRNG" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
     xmlns:mui="http://firstfloorsoftware.com/ModernUI" 
     mc:Ignorable="d" 
     d:DesignWidth="766.507" Height="535"> 
<Viewbox Stretch="None"> 
    <Grid Style="{StaticResource ContentRoot}" Height="301" Margin="0" Width="435"> 
     <Grid.ColumnDefinitions> 
      <ColumnDefinition/> 
      <ColumnDefinition Width="0*"/> 
     </Grid.ColumnDefinitions> 

     <!-- TODO: set @SelectedSource --> 

     <mui:ModernTab Layout="Tab" Margin="0,52,0,0"> 
      <mui:ModernTab.Links> 
       <!-- TODO: set @Source --> 
       <mui:Link DisplayName="Client" Source="/Pages/ClientRNG.xaml" /> 
       <mui:Link DisplayName="Server" /> 
      </mui:ModernTab.Links> 
     </mui:ModernTab> 

     <Button Name ="r2but" Content="GENERATE R# 2" HorizontalAlignment="Left" VerticalAlignment="Top" Width="120" RenderTransformOrigin="0.055,0.397" Height="26" Margin="76,52,0,0" FontSize="11" Click="Button_Click_1" /> 
     <TextBox Name ="r2Out" HorizontalAlignment="Left" Height="57" Margin="76,88,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120" RenderTransformOrigin="0.498,0.404"/> 

     <Button Content="GENERATE MS" HorizontalAlignment="Left" VerticalAlignment="Top" Width="119" RenderTransformOrigin="0.055,0.397" Height="26" Margin="249,52,0,0" /> 
     <TextBox Name ="msOutS" HorizontalAlignment="Left" Height="57" Margin="249,88,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="119" RenderTransformOrigin="0.498,0.404"/> 


     <Label Content="Random Number Generator" HorizontalAlignment="Left" Height="19" Margin="10,10,0,0" VerticalAlignment="Top" Width="415" FontWeight="Bold"/> 


    </Grid> 

</Viewbox>

現在我試圖用張貼Omribitan的解決方案，但我仍然在努力

來源

2013-10-20 mikey

你是如何顯示**'SplitPage1'？在你發佈的代碼中，你只是在實例化它... –

你將不得不分享xaml來告訴兩個用戶控件之間的關係。他們是兄弟姐妹還是有親子關係？ – Nitin

@nit他們是兄弟姐妹，對不起，我沒有編碼的xaml別人做了它 – mikey

根據你在說已經顯示SplitPage1的評論欄，

你在做你的代碼是什麼創造了SplitPage1一個新實例，它傳遞數據

SplitPage1 sp = new SplitPage1(); // This is a new page, not the one currently shown in your application 
    sp.Setr1SSLBox(number); // it should set the text box in SSL page

所以，如果你想設置的當前顯示SplitPage1文本，你需要得到它是參考。這很難說，因爲怎麼也看不出你的整個代碼，但是這是我會考慮：

使用IoC container解決的SplitPage1當前實例。

根據你的代碼好像有一個第三方創建這些頁面。如果這是真的，它可以通過ServerRNG的SplitPage1它的創建，你就可以在以後使用，例如參考：

public partial class ServerRNG : UserControl 
{ 
    private SplitPage1 sp; 

    public ServerRNG(SplitPage1 splitPage) : this() 
    { 
      sp = splitPage; // Save a reference to the currently displayed `SplitPage1` page 
    } 

    public ServerRNG() 
    { 
      InitializeComponent(); 
    } 

    private void Button_Click_1(object sender, RoutedEventArgs e) 
    { 
      Random r = new Random(2); 
      int number = r.Next(0, 100); 
      r2Out.Text = number.ToString(); 
      sp.Setr1SSLBox(number); // Set the correct instance's text 
    } 
}

創建一個類將公開一個靜態屬性和事件，將觸發當屬性更改：

public class SharingManager 
{ 
    // Define a global static event to be fired when the value is changing 
    public static event EventHandler<NumericEventArgs> ValueChanged; 

    public static int GlobalValue 
    { 
     set 
     { 
      // Fire ValueChanged event 
      if (ValueChanged != null) 
       ValueChanged(null, new NumericEventArgs(value)); 
     } 
    } 
    } 

public class NumericEventArgs : EventArgs 
{ 
    public NumericEventArgs(int value) 
    { 
     Value = value; 
    } 

    public int Value { get; set; } 
}

在SplitPage1

public SplitPage1() 
    { 
     InitializeComponent(); 
     SharingManager.ValueChanged += UpdateTextBox; 

    } 

public void UpdateTextBox(object sender, NumericEventArgs e) 
{ 
    r1SSLBox.Text = e.Value.ToString(); // Update textBox 
}

註冊一個處理程序

在Button_Click_1上ServerNRG，更新值觸發事件

Random r = new Random(2); 
    int number = r.Next(0, 100); 
    r2Out.Text = number.ToString(); 
    SharingManager.GlobalValue = number;

希望這有助於

來源

2013-10-20 07:16:55

我之前有類似的解決方案，但是我的和你的都得到這個錯誤：「對象引用沒有設置爲對象的一個實例」。它指的是'sp'變量...我必須在某處調用ServerRNG（SplitPage1 splitPage）嗎？ – mikey

我忘記提及我們正在使用'mui' ...我不知道這是否有幫助是導致splitPage1 – mikey

@lucaConfa是的，當然，就像我說的，如果有第三方創建這個類，它將不得不使用ServerRNG（SplitPage1 splitPage）構造函數來創建'ServerRNG'，而不是它的默認構造函數。 –

你應該WPF使用MVVM設計模式的工作原理。它有點兒討厭不MVVM框架我建議你使用http://caliburnmicro.codeplex.com/

使用本教程上手

http://www.mindscapehq.com/blog/index.php/2012/01/12/caliburn-micro-part-1-getting-started/

這也解釋瞭如何使用調解模式（使用卡利萬分之一事件aggerator）至在不同的窗口之間傳遞值/命令。

http://www.mindscapehq.com/blog/index.php/2012/2/1/caliburn-micro-part-4-the-event-aggregator/

來源

2013-10-20 08:38:18 Nahum

傳遞兩個頁面之間的值wpf

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