Windows窗体中的RadioButton绑定与INotifyPropertyChanged？

Question

我试图将一些RadioButtons绑定到类中的布尔值,然后启用/禁用表单上的其他元素.例如:

x radioButton1
    x checkBox1
x radioButton2
    x checkBox2

我想只在选择了radioButton1时启用checkBox1,同样也支持radioButton2和checkBox2.

当我尝试绑定这些时,需要两次单击才能更改RadioButton选择.似乎绑定的顺序导致逻辑问题.

这是代码,显示了这一点.表单只有两个默认名为RadioButtons和两个CheckBoxes.

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();

        BindingSource bindingSource = new BindingSource(new Model(), "");

        radioButton1.DataBindings.Add(new Binding("Checked", bindingSource, "rb1Checked", true, DataSourceUpdateMode.OnPropertyChanged));
        radioButton2.DataBindings.Add(new Binding("Checked", bindingSource, "rb2Checked", true, DataSourceUpdateMode.OnPropertyChanged));

        checkBox1.DataBindings.Add(new Binding("Enabled", bindingSource, "cb1Enabled", true, DataSourceUpdateMode.OnPropertyChanged));
        checkBox2.DataBindings.Add(new Binding("Enabled", bindingSource, "cb2Enabled", true, DataSourceUpdateMode.OnPropertyChanged));
    }
}

public class Model : INotifyPropertyChanged
{
    private bool m_rb1Checked;
    public bool rb1Checked
    {
        get { return m_rb1Checked; }
        set
        {
            m_rb1Checked = value;
            NotifyPropertyChanged("cb1Enabled");
        }
    }

    private bool m_rb2Checked;
    public bool rb2Checked
    {
        get { return m_rb2Checked; }
        set
        {
            m_rb2Checked = value;
            NotifyPropertyChanged("cb2Enabled");
        }
    }

    public bool cb1Enabled { get { return rb1Checked; } }
    public bool cb2Enabled { get { return rb2Checked; } }

    public Model()
    {
        rb1Checked = true;
    }


    #region INotifyPropertyChanged Members

    public event PropertyChangedEventHandler PropertyChanged;

    private void NotifyPropertyChanged(string fieldName)
    {
        if (PropertyChanged != null)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(fieldName));
        }
    }

    #endregion
}

有人看到了让这项工作的方法吗？

Answer 1

这似乎是一个错误,不会修复:

http://social.msdn.microsoft.com/Forums/en-US/csharpgeneral/thread/5735dac2-63e9-4797-80af-91969bf4d16e/

作为一种解决方法,我"手动"连接这样的绑定:

// Set initial values
radioButton1.Checked = model.Checked;
radioButton2.Checked = model.Checked;

// Change on event
radioButton1.CheckedChanged += delegate { model.rb1Checked = radioButton1.Checked; };
radioButton2.CheckedChanged += delegate { model.rb2Checked = radioButton2.Checked; };

// These stay the same
checkBox1.DataBindings.Add(new Binding("Enabled", bindingSource, "cb1Enabled", true, DataSourceUpdateMode.OnPropertyChanged));
checkBox2.DataBindings.Add(new Binding("Enabled", bindingSource, "cb2Enabled", true, DataSourceUpdateMode.OnPropertyChanged));