如何将用户控件的属性与WPF中同一个控件的属性进行绑定？ [英] How can I bind a property of a user control to a properties of that same control in WPF?

问题描述

在我的用户控件内我有一个收集呼叫解决方案

  public List< string>解决方案{get;组;我想将该属性绑定到同一用户控件的xaml中的组合框中？
 
 
 > 
 
 
我尝试过
 < ComboBox Horizo​​ntalAlignment =LeftMargin =21 ，0,0,41Name =cbAddSolutionWidth =194Height =21VerticalAlignment =Bottom
 ItemsSource ={Binding Path = Solutions}/> 
  
但似乎不起作用。
解决方案
在XAML中命名您的UserControl，并从绑定中引用它，如下所示：
 < UserControl x：Name =MyUserControl> 
< ComboBox Horizo​​ntalAlignment =LeftMargin =21,0,0,41Name =cbAddSolutionWidth =194
 Height =21VerticalAlignment =Bottom
 ItemsSource ={Binding ElementName = MyUserControl，Path = Solutions}/> 
< / UserControl> 
  
如果你想要正确绑定，你的UserControl应该为该属性实现INotifyPropertyChanged，或者使该属性为依赖属性
 
 
 
 更新 
 
 
 
或者如果您不想命名UserControl，请使用RelativeSource 
 < UserControl> 
< ComboBox Horizo​​ntalAlignment =LeftMargin =21,0,0,41Name =cbAddSolutionWidth =194
 Height =21VerticalAlignment =Bottom
 ItemsSource ={Binding Path = Solutions，RelativeSource = {RelativeSource AncestorType = {x：Type UserControl}}}/> 
< / UserControl> 
  
 
Inside my user control I have a collection call Solutions
 public List<string> Solutions { get; set; }
I want to bind that property to a combobox in xaml of that same user control?

I tried
<ComboBox HorizontalAlignment="Left" Margin="21,0,0,41" Name="cbAddSolution" Width="194" Height="21" VerticalAlignment="Bottom" 
              ItemsSource="{Binding Path=Solutions}"    />
but that didn't seem to work.
解决方案
Name your UserControl in XAML and refer to it from the binding like so:
<UserControl x:Name = "MyUserControl">
  <ComboBox HorizontalAlignment="Left" Margin="21,0,0,41" Name="cbAddSolution" Width="194"
            Height="21" VerticalAlignment="Bottom" 
            ItemsSource="{Binding ElementName=MyUserControl, Path=Solutions}" />
</UserControl>
If you want proper binding your UserControl should implement INotifyPropertyChanged for that property or make that property a Dependency Property

Update

Or use RelativeSource if you don't want to name the UserControl
<UserControl>
  <ComboBox HorizontalAlignment="Left" Margin="21,0,0,41" Name="cbAddSolution" Width="194"
            Height="21" VerticalAlignment="Bottom" 
            ItemsSource="{Binding Path=Solutions, RelativeSource={RelativeSource AncestorType={x:Type UserControl}}}" />
</UserControl>


                        
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