我有很多这样的用户控件:
PageManageCustomers.xaml.cs:
public partial class PageManageCustomers : BasePage
{
...
}
继承自:
PageBase.cs:
public class BasePage : UserControl, INotifyPropertyChanged
{
...
}
由于 PageBase.cs 没有附带的XAML文件,我必须将其引用的XAML放在用户控件的每个中继承它,例如在继承PageBase
的每个控件的每个 XAML文件中重复以下块:
<DataTemplate x:Key="manageAreaCellTemplate">
<StackPanel Orientation="Horizontal">
<TextBlock Style="{DynamicResource ManageLinkStyle}"
Tag="{Binding Id}" Text="Delete" MouseDown="System_Delete_Click"/>
<TextBlock Text=" "/>
<TextBlock Style="{DynamicResource ManageLinkStyle}"
Tag="{Binding Id}" Text="Edit" MouseDown="System_Edit_Click"/>
</StackPanel>
</DataTemplate>
我正在尝试将此块放入资源文件,但无法正确使用语法,它说:
'ResourceDictionary'根元素 需要x:Class属性 支持XAML中的事件处理程序 文件。删除事件处理程序 对于MouseDown事件,或添加一个 x:根元素的Class属性。
或许我可以用某种方式用 XamlReader 来阅读这些块?
如何将这个重复的代码块放在一个地方,以便在每个继承BagePage的XAML文件中不重复?
Window1.xaml:
<Window x:Class="TestXamlPage8283.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300">
<StackPanel x:Name="MainContent"/>
</Window>
Window1.xaml.cs:
using System.Windows;
namespace TestXamlPage8283
{
public partial class Window1 : Window
{
public Window1()
{
InitializeComponent();
Page1 page1 = new Page1();
MainContent.Children.Add(page1);
Page2 page2 = new Page2();
MainContent.Children.Add(page2);
}
}
}
的Page1.xaml:
<local:BasePage x:Class="TestXamlPage8283.Page1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:TestXamlPage8283"
Height="40" Width="300">
<StackPanel>
<TextBlock Text="{Binding PageTitle}"
FontSize="14"
FontWeight="Bold"/>
<TextBlock Text="This is XAML that is specific to page one." />
</StackPanel>
</local:BasePage>
Page1.xaml.cs:
namespace TestXamlPage8283
{
public partial class Page1 : BasePage
{
public Page1()
{
InitializeComponent();
PageTitle = "Page One";
}
}
}
Page2.xaml:
<local:BasePage x:Class="TestXamlPage8283.Page2"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:TestXamlPage8283"
Height="40" Width="300">
<StackPanel>
<TextBlock Text="{Binding PageTitle}"
FontSize="14"
FontWeight="Bold"/>
<TextBlock Text="This is XAML that is specific to page two." />
</StackPanel>
</local:BasePage>
Page2.xaml.cs:
namespace TestXamlPage8283
{
public partial class Page2 : BasePage
{
public Page2()
{
InitializeComponent();
PageTitle = "Page Two";
}
}
}
BasePage.cs:
using System.Windows.Controls;
using System.ComponentModel;
namespace TestXamlPage8283
{
public class BasePage : UserControl, INotifyPropertyChanged
{
#region ViewModelProperty: PageTitle
private string _pageTitle;
public string PageTitle
{
get
{
return _pageTitle;
}
set
{
_pageTitle = value;
OnPropertyChanged("PageTitle");
}
}
#endregion
public BasePage()
{
DataContext = this;
}
#region INotifiedProperty Block
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(propertyName));
}
}
#endregion
}
}
如何使用此块
<TextBlock Text="{Binding PageTitle}"
FontSize="14"
FontWeight="Bold"/>
out Page1.xaml和Page2.xaml并将其放在一个位置,以便我可以从Page1 引用到它.xaml和Page2.xaml?(这样当我想将FontSize = 14更改为FontSize = 16时,我只需要在一个地方更改它)
答案 0 :(得分:6)
使用资源词典 - 在项目中添加MyDictionary.xaml
文件,将其Build Action设置为“Page”:
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<DataTemplate x:Key="manageAreaCellTemplate">
<StackPanel Orientation="Horizontal">
<TextBlock Style="{DynamicResource ManageLinkStyle}"
Tag="{Binding Id}" Text="Delete" MouseDown="System_Delete_Click"/>
<TextBlock Text=" "/>
<TextBlock Style="{DynamicResource ManageLinkStyle}"
Tag="{Binding Id}" Text="Edit" MouseDown="System_Edit_Click"/>
</StackPanel>
</DataTemplate>
</ResourceDictionary>
然后在其他XAML文件中引用它:
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="MyDictionary.xaml"/>
</ResourceDictionary.MergedDictionaries>
... some other local resources ...
</ResourceDictionary>
并将您的资源称为Template={StaticResource manageAreaCellTemplate}
。