WPF

public bool CanEnableField(string Key)
{
    // if the form is in Add or Edit Mode, and the user has rights to the field, then EnableControls = true
}

public bool EnableControls
        {
            get
            {
                return enableControls;
            }
            set
            {
                if (enableControls != value)
                {
                    enableControls = value;
                    OnPropertyChanged("EnableControls");
                }
            }
        }

<Label Grid.Row="2" Content="Name : " HorizontalAlignment="Right" VerticalAlignment="Bottom" Margin="2,2,2,7" />
                <TextBox Grid.Column="1" Grid.Row="2" Margin="2" IsEnabled="{Binding Path=EnableControls}" Text="{Binding Path=SelectedCustomer.Name, ValidatesOnDataErrors=True,UpdateSourceTrigger=PropertyChanged}" />

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)
   {
      ...
   }
}

<TextBox IsEnabled="{Binding Path=CanEnable.Field1}" ... />