PropertyGrid缺少textChanged事件

Question

我遇到了propertyGrid的问题。

我有一个映射到PropertyGrid的 我有一个属性“姓名”一类叫做DummySettings

当输入PropertyGrid中的EG的东西的名称属性我想提出一个事件，“框TextChanged”

尽管实施了INotifyPropertyChanged事件并将其提高，并且尽管在PropertyGrid 上挂钩了各种事件，但当文本更改时，没有任何事件会触发。

我是否缺少明显的？

EDITED

的伪代码

public class DummySettings : INotifyPropertyChanged 
      { 
       private string name; 


       [DisplayName("Name")] 
       public string Name 
       { 
        get { return name; } 
        set 
        { 
         if (name != value) 
         { 
          name = value; 
         OnPropertyChanged("Name"); 
         } 
        } 
       } 

       public event PropertyChangedEventHandler PropertyChanged; 

       protected virtual void OnPropertyChanged(string propertyName) 
       { 
        PropertyChangedEventHandler handler = PropertyChanged; 
        if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName)); 
       } 
      } 



     //UserControl 
    public partial class DummyControl : UserControl 
    { 
    private DummySettings settings; 

    ///Constructor 
    public DummyControl() 
    { 
     InitializeComponent(); 

     settings = new DummySettings(); 
     propertyGrid1.SelectedObject = settings; 
     settings.PropertyChanged += OnDummyPropertyChanged; 


    //All the events I have hooked up but not firing when text is changed 
    private void OnDummyPropertyChanged(object sender, PropertyChangedEventArgs e) 
    { 
      btnToEnable.Enabled = HasName(); 
    }   
    private void propertyGrid1_Leave(object sender, EventArgs e) 
    { 
       btnToEnable.Enabled = HasName(); 
    } 

    private void propertyGrid1_Validating(object sender, CancelEventArgs e) 
    { 
     btnToEnable.Enabled = HasName(); 
    } 

    private void propertyGrid1_SelectedObjectsChanged(object sender, EventArgs e) 
    { 
      btnToEnable.Enabled = HasName(); 
    } 


    private void propertyGrid1_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e) 
    { 
     btnToEnable.Enabled = HasName(); 
    } 

     private bool HasName() 
    { 
     return settings.Name.IsNotNullOrEmpty(); 
    } 

Answer 1

您可以使用PropertyValueChanged事件得到通知在PropertyGrid中改变选择的对象属性。所以，当你从“富”到“酒吧”改变Name属性值，该事件将提高：

void propertyGrid_PropertyValueChanged(object s, PropertyValueChangedEventArgs e) 
{ 
    // previous value is e.OldValue, "Foo" 
    // property name is e.ChangedItem.Label, "Name" 
    // new value is e.ChangedItem.Value, "Bar" 
}