Windows Phone MultiBinding :Cimbalino Toolkit

來源:互聯網
上載者:User

在WPF和WIN8中是支援MultiBinding

這個有啥用呢,引用下MSDN的例子http://msdn.microsoft.com/en-us/library/system.windows.data.multibinding.aspx:

MultiBinding allows you to bind a binding target property to a list of source properties and then apply logic to produce a value with the given inputs. This example demonstrates how to use MultiBinding.

In the following example, NameListData refers to a collection of PersonName objects, which are objects that contain two properties, firstName and lastName. The following example produces a TextBlock that shows the first and last names of a person with the last name first.

<TextBlock Name="textBox2" DataContext="{StaticResource NameListData}">      <TextBlock.Text>        <MultiBinding Converter="{StaticResource myNameConverter}"                      ConverterParameter="FormatLastFirst">          <Binding Path="FirstName"/>          <Binding Path="LastName"/>        </MultiBinding>      </TextBlock.Text>    </TextBlock>
public class NameConverter : IMultiValueConverter    {        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)        {            string name;                     switch ((string)parameter)            {                case "FormatLastFirst":                    name = values[1] + ", " + values[0];                    break;                case "FormatNormal":                default:                    name = values[0] + " " + values[1];                    break;            }                     return name;        }                 public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)        {            string[] splitValues = ((string)value).Split(' ');            return splitValues;        }    }

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