How to databind Enum value to a Boolean value?

Question

So I have a main form with 3 controls whose Enable property I want to control using an enum.

All these controls have a reference to the Data that contains the Enum value Level.

enum Level
{
    Red,
    Yellow,
    Green
}

So if it's Red, I want the RedControl to become enabled, if it's yellow, then YellowControl becomes enabled, etc.

How do I best do this with minimal code and elegance?

I tried having 3 properties like IsRed, IsYellow, etc on the Data to hook them up. But then I didn't know a way to detect the change of Level from those properties.

Answer 1

RedControl.Enabled = ((value & Level.Red) != 0)

Answer 2

Im not sure about databinding it... but what about putting enabling code in the property' s set?

ie

public YourClass
{
   Level _level;
   public Level level 
   {
      get{ return _level;}
      set 
      {
        _level = value;
        if(_level == Level.Green) { greenControl.Enable = true; //plus disable others }
        if(_level == Level.Yellow) { yellowControl.Enable = true; //plus disable others }
        if(_level == Level.Red) { redControl.Enable = true; //plus disable others }
      }
   }
}

that way your property works like normal (and I guess you can databind it but im not really sure) and when it gets changed the controllers will change.

Answer 3

Your binding source class could implement the System.ComponentModel.INotifyPropertyChanged. I think it's a flexible way to do databinding in windows forms.

Here's one article on codeproject showing how to do it. I've haven't analysed it very deeply, though.