title: PropertyGrid do action after Editing with the help of UITypeEditor or TypeConverter to change an other property
body: <p>I have a class with some properties. After changing one of them I want to react and change an other propertie. This action should done by an UITypeEditor or the TypeConverter and not by an event in the class itself.</p>
  
  <p>I don't want to use INotifyPropertyChanged and handle this in the class itself.</p>
  
  <p>not tested sample code</p>
  
  <pre><code>public class MyEditor : UITypeEditor
  {
      public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
      {
          // change the other property
      }
  }
  
  [Editor(typeof(MyEditor), typeof(UITypeEditor))]
  class MyClass
  {
      public string String1 { get; set; } 
      public string String2 { get; set; } 
      public string String3 { get; set; } 
  }
  </code></pre>
  
  <p>This EditValue has only a function in showing the editor modal with a little button ... But I want to have a normal textbox with an AfterChange or so.</p>