是否可以使用XAML文件中的XamlReader加載一個XAML文本塊？

Question

我用下面的DataTemplate在許多控制：

<pages:BasePageManageItems x:Class="TestApp.Pages.PageManageAddresses" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:pages="clr-namespace:TestHistorierung.Pages" 
    xmlns:tk="http://schemas.microsoft.com/wpf/2008/toolkit" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
      Background="#eee" 
      VerticalAlignment="Stretch"> 
    <pages:BasePageManageItems.Resources> 
     <DataTemplate x:Key="manageAreaCellTemplate"> 
      <Border Padding="2"> 
       <StackPanel Orientation="Horizontal"> 
        <TextBlock Style="{DynamicResource ManageLinkStyle}" 
        Tag="{Binding Id}" Text="Delete" MouseDown="System_Delete_Click" 
        Margin="0 0 5 0"/> 
        <TextBlock Style="{DynamicResource ManageLinkStyle}" 
        Tag="{Binding Id}" Text="Edit" MouseDown="System_Edit_Click" 
        Margin="0 0 5 0"/> 
        <TextBlock Style="{DynamicResource ManageLinkStyle}" 
        Tag="{Binding Id}" Text="Add" MouseDown="System_Add_Click" 
        Margin="0 0 5 0"/> 
        <TextBlock Style="{DynamicResource ManageLinkStyle}" 
        Tag="{Binding Id}" Text="Copy" MouseDown="System_Copy_Click" 
        Margin="0 0 5 0"/> 
       </StackPanel> 
      </Border> 
     </DataTemplate> 
    </pages:BasePageManageItems.Resources> 

有沒有辦法使用XamlReader從XAML，這樣我可以在DataTemplate中的文本簡單地加載到XAML文件動態？我想象這樣的事情（僞代碼）：

<pages:BasePageManageItems x:Class="TestApp.Pages.PageManageAddresses" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:pages="clr-namespace:TestHistorierung.Pages" 
    xmlns:tk="http://schemas.microsoft.com/wpf/2008/toolkit" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
      Background="#eee" 
      VerticalAlignment="Stretch"> 
    <pages:BasePageManageItems.Resources> 
     <XamlReader Load="XamlBlocks/DateTemplateManageButtons.xaml"/> 
    </pages:BasePageManageItems.Resources> 

Answer 1

你不應該放置在XAML中XamlReader標籤（我甚至不知道這是否是可能的）。相反，你可以使用XamlReader類代碼來創建編譯XAML中，並將其連接到父元素：

var element = XamlReader.Load(stringContainingXaml); 
this.somePanel.Children.Insert(0, element as FrameworkElement); 

Answer 2

您可以把常用的XAML在ResourceDictionary中：

XamlBlocks/DateTemplateManageButtons.xaml（加入項目建設行動=頁）

<ResourceDictionary x:Class="myNmaespace.DateTemplateManageButtons" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> 
    <DataTemplate x:Key="manageAreaCellTemplate"> 
      <Border Padding="2"> 
       <StackPanel Orientation="Horizontal"> 
        <TextBlock Style="{DynamicResource ManageLinkStyle}" 
        Tag="{Binding Id}" Text="Delete" MouseDown="System_Delete_Click" 
        Margin="0 0 5 0"/> 
        <TextBlock Style="{DynamicResource ManageLinkStyle}" 
        Tag="{Binding Id}" Text="Edit" MouseDown="System_Edit_Click" 
        Margin="0 0 5 0"/> 
        <TextBlock Style="{DynamicResource ManageLinkStyle}" 
        Tag="{Binding Id}" Text="Add" MouseDown="System_Add_Click" 
        Margin="0 0 5 0"/> 
        <TextBlock Style="{DynamicResource ManageLinkStyle}" 
        Tag="{Binding Id}" Text="Copy" MouseDown="System_Copy_Click" 
        Margin="0 0 5 0"/> 
       </StackPanel> 
      </Border> 
     </DataTemplate> 
    </ResourceDictionary> 

XamlBlocks/DateTemplateManageButtons.xaml.cs：

namespace myNamespace 
{ 
    public partial class DateTemplateManageButtons : ResourceDictionary 
    { 
     private void System_Delete_Click(object sender, RoutedEventArgs e) 
     { 
      // event handler code 
     } 
     // other event handlers 
    } 
} 

而在你的頁面：

<pages:BasePageManageItems x:Class="TestApp.Pages.PageManageAddresses" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:pages="clr-namespace:TestHistorierung.Pages" 
    xmlns:tk="http://schemas.microsoft.com/wpf/2008/toolkit" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
      Background="#eee" 
      VerticalAlignment="Stretch"> 
    <pages:BasePageManageItems.Resources> 
     <ResourceDictionary> 
      <ResourceDictionary.MergedDictionaries> 
       <ResourceDictionary Source="XamlBlocks/DateTemplateManageButtons.xaml"/> 
      </ResourceDictionary.MergedDictionaries> 
     </ResourceDictionary> 
    </pages:BasePageManageItems.Resources> 

如果你需要的事件處理程序代碼在網頁上運行，而不是資源字典，你可以這樣做：

定義接口的事件：

public interface IDateTemplateManageButtonsEvents 
{ 
    void System_Delete_Click(object sender, RoutedEventArgs e); 
} 

實現在使用數據模板

在資源字典CS文件中的所有網頁該接口：

private IDateTemplateManageButtonsEvents FindPage(object sender) 
{ 
    DependencyObject current = sender as DependencyObject; 
    while(current != null && !(current is IDateTemplateManageButtonsEvents)) 
    { 
     current = VisualTreeHelper.GetParent(current); 
    } 
    return (IDateTemplateManageButtonsEvents)current; 
} 
private void System_Delete_Click(object sender, RoutedEventArgs e) 
{ 
    FindPage(sender).System_Delete_Click(sender, e); 
}