C# 将模型从窗口绑定到用户控件

我需要以双向模式将代码隐藏中的

“CommonViewModel”

对象与

“MainWindow”

及其子对象

“UserControl1”

和

“UserControl2”

绑定

MainWindow.xaml

<Window x:Class="Testing.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:Testing"
    mc:Ignorable="d"
    Title="MainWindow" Height="350" Width="525">
    <StackPanel>
        <local:UserControl1/>
        <local:UserControl2/>
    </StackPanel>
</Window>

UserControl1.xaml

<UserControl x:Class="Testing.UserControl1"
         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" 
         mc:Ignorable="d" 
         d:DesignHeight="300" d:DesignWidth="300">
    <StackPanel >
        <TextBox Text="{Binding CommonProperity1,Mode=TwoWay}"/>
    </StackPanel>
</UserControl>

---

很抱歉，是的，你是对的，它工作正常，错误在框架内，代码没有问题

---

无论如何，感谢您的帮助。

您的代码应该可以工作。不是吗？如果在子控件上未设置其他DataContext，则父控件的DataContext将由子控件继承。调试输出中是否存在绑定错误？您的代码工作正常。你面临什么样的问题？

<UserControl x:Class="Testing.UserControl1"
         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" 
         mc:Ignorable="d" 
         d:DesignHeight="300" d:DesignWidth="300">
    <StackPanel >
        <TextBox Text="{Binding CommonProperity1,Mode=TwoWay}"/>
    </StackPanel>
</UserControl>

<UserControl x:Class="Testing.UserControl2"
         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" 
         mc:Ignorable="d" 
         d:DesignHeight="300" d:DesignWidth="300">
    <StackPanel>
        <TextBox Text="{Binding CommonProperity2,Mode=TwoWay}"/>
    </StackPanel>
</UserControl>

public class CommonViewModel : NotifyChangeClass
{
    private string _Localtextdata1;
    private string _Localtextdata2;

    public string CommonProperity1
    {
        get { return _Localtextdata1; }
        set
        {
            _Localtextdata1 = value;
            NotifyPropertyChange("CommonProperity1");
        }
    }
    public string CommonProperity2
    {
        get { return _Localtextdata2; }
        set
        {
            _Localtextdata2 = value;
            NotifyPropertyChange("CommonProperity2");
        }
    }
}

public class NotifyChangeClass : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;

    protected void NotifyPropertyChange(string ProperityName)
    {
        if (PropertyChanged != null)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(ProperityName));
        }
    }
}