如何在WPF控件上绑定本地属性

我有两个WPF控件

<Button HorizontalAlignment="Center"
        Name="btnChange"
        Click="btnChange_Click"
        Content="Click Me" />

<Label Name="lblCompanyId"
       HorizontalAlignment="Center"
       DataContext="{Binding ElementName=_this}"
       Content="{Binding Path=CompanyName}" />

我们可以看到标签绑定到本地属性(在代码后面),当我点击按钮时,我没有看到任何值的标签

以下是我的代码背后…

public static readonly DependencyProperty CompanyNameProperty =
  DependencyProperty.Register("CompanyName", typeof(string), typeof(Window3), new UIPropertyMetadata(string.Empty));

public string CompanyName {
  get { return (string)this.GetValue(CompanyNameProperty); }
  set { this.SetValue(CompanyNameProperty, value); }
}

private void btnChange_Click(object sender, RoutedEventArgs e) {
  this.CompanyName = "This is new company from code beind";
}

问候,

尝试

Content="{Binding ElementName=_this, Path=CompanyName}"

没有DataContext绑定

编辑

我的代码没有问题,将你的窗口命名为x：Name =“_ this”？

<Window x:Class="WpfStackOverflowSpielWiese.Window3"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Window3"
        Height="300"
        Width="300"
        x:Name="_this">
  <Grid>
    <StackPanel>
      <Button HorizontalAlignment="Center"
              Name="btnChange"
              Click="btnChange_Click"
              Content="Click Me" />

      <Label Name="lblCompanyId"
             HorizontalAlignment="Center"
             DataContext="{Binding ElementName=_this}"
             Content="{Binding Path=CompanyName}"></Label>

    </StackPanel>
  </Grid>
</Window>

你的窗口真的是Window3吗？

public partial class Window3 : Window
{
  public Window3() {
    this.InitializeComponent();
  }

  public static readonly DependencyProperty CompanyNameProperty =
    DependencyProperty.Register("CompanyName", typeof(string), typeof(Window3), new UIPropertyMetadata(string.Empty));

  public string CompanyName {
    get { return (string)this.GetValue(CompanyNameProperty); }
    set { this.SetValue(CompanyNameProperty, value); }
  }

  private void btnChange_Click(object sender, RoutedEventArgs e) {
    this.CompanyName = "This is new company from code beind";
  }
}

希望有所帮助