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QuestionRandom Image with array Pin
Tikha17-Jan-13 11:23
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QuestionDispatcherTimer Tick event not fired Pin
Praveen Raghuvanshi17-Jan-13 4:54
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QuestionWhich way to load entity child collections? Pin
UCLAdam16-Jan-13 5:11
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QuestionWPF with Web Pin
Rishabh Kumar14-Jan-13 8:42
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Abhishek Pant14-Jan-13 9:17
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Abhinav S16-Jan-13 17:20
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QuestionWPF - Bind IsEnabled To Method On VM Pin
Kevin Marois13-Jan-13 11:06
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Wayne Gaylard14-Jan-13 0:55
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AnswerRe: WPF - Bind IsEnabled To Method On VM Pin
Richard Deeming14-Jan-13 2:13
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If you're using .NET 4.0 or 4.5, you can combine a single property with a dynamic object to achieve this:
public interface ICanEnableField
{
   bool CanEnableField(string key);
}
 
public sealed class CanEnableFieldHelper : DynamicObject
{
   private readonly ICanEnableField _owner;
   
   public CanEnableFieldHelper(ICanEnableField owner)
   {
      _owner = owner;
   }
   
   public override bool TryGetMember(GetMemberBinder binder, out object result)
   {
      result = _owner.CanEnableField(binder.Name);
      return true;
   }
}
 
public class YourViewModel : ICanEnableField
{
   private readonly CanEnableFieldHelper _helper;
   
   public YourViewModel()
   {
      _helper = new CanEnableFieldHelper(this);
   }
   
   public dynamic CanEnable
   {
      get { return _helper; }
   }
   
   public bool CanEnableField(string key)
   {
      ...
   }
}
In you XAML, you can then bind to CanEnable.Key, which will return the result of calling CanEnableField("Key"):
<TextBox IsEnabled="{Binding Path=CanEnable.Field1}" ... />
When you need to change the state, you just need to raise the PropertyChanged event for the CanEnable property.



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GeneralRe: WPF - Bind IsEnabled To Method On VM Pin
Kevin Marois14-Jan-13 10:40
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Kevin Marois20-Jan-13 8:47
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QuestionWPF - Sync Combox Pin
Kevin Marois12-Jan-13 15:19
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Mycroft Holmes13-Jan-13 0:50
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Kevin Marois23-Jan-13 17:41
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QuestionStyle From Resource File Not Being Applied Pin
Kevin Marois12-Jan-13 10:20
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Richard MacCutchan12-Jan-13 23:44
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Kevin Marois13-Jan-13 10:58
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QuestionRoutedEvent vs AttachedEvent - Syntax difference only? Confused Pin
devvvy9-Jan-13 20:05
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QuestionHow to play an Audio File After another has Finished in WPF MediaElement Pin
Vuyiswa Maseko4-Jan-13 3:58
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AnswerRe: How to play an Audio File After another has Finished in WPF MediaElement Pin
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GeneralRe: How to play an Audio File After another has Finished in WPF MediaElement Pin
Vuyiswa Maseko4-Jan-13 6:08
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QuestionWPF tutorial book website pdf Pin
frazzle-me1-Jan-13 10:44
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Richard MacCutchan1-Jan-13 22:31
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Pete O'Hanlon2-Jan-13 5:48
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GeneralRe: WPF tutorial book website pdf Pin
Richard MacCutchan2-Jan-13 6:09
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Pete O'Hanlon2-Jan-13 6:10
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Fernando E. Braz2-Jan-13 5:15
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frazzle-me2-Jan-13 7:07
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QuestionWPF Tab Styling Question #2 Pin
Kevin Marois1-Jan-13 8:59
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GeneralRe: WPF Tab Styling Question #2 Pin
Kevin Marois1-Jan-13 10:06
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GeneralRe: WPF Tab Styling Question #2 Pin
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GeneralRe: WPF Tab Styling Question #2 Pin
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