将对象从按钮绑定到ViewModel WPF中的属性

<Button DataContext="{Binding MainViewModelInstance}" />

<Button Content="{Binding ButtonContent}" />

public class MainViewModel : INotifyPropertyChanged
{
    private string _buttonContent;
    public string ButtonContent
    {
        get { return _buttonContent; }
        set
        {
            _buttonContent = value;
            OnPropertyChanged(nameof(ButtonContent));
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;
    protected virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        DataContext = new MainViewModel();
    }
}