Re: How to display different states in DataTemplate

10-31-2008 8:04 AM |

Probably a ValueConverter is the way to go.

Create a new Class that implements IValueConverter:

 

    public class BorderOpacityConverter : IValueConverter
    {

        #region IValueConverter Members

        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            string myValue = (string)value;
            switch (myValue)
            {
                case "One":
                    return 0.00;
                case "Two":
                    return 0.50;
                case "Three":
                    return 1.00;
                default:
                    return 0;

            }
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }

        #endregion
    }

 Add it as a resource to your page:

<UserControl x:Class="SilverlightDataBinding.Page"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:local="clr-namespace:SilverlightDataBinding"
    Width="400" Height="300">

    <UserControl.Resources>
        <local:BorderOpacityConverter x:Name="BorderOpacityConverter"></local:BorderOpacityConverter>
    </UserControl.Resources>

...

 Use it in a binding for the property:

<Border Name="MainBorder" Background="#FF0000" Opacity="{Binding Title,Converter={StaticResource BorderOpacityConverter}}" />