Silverlight 自定义类型转换器（或者叫自定义转换器）

     public class DateTimeConverter : IValueConverter
    {
        /// <summary>
        /// 把时间转化成指定的格式
        /// </summary>
        /// <param name="value"></param>
        /// <param name="targetType"></param>
        /// <param name="parameter"></param>
        /// <param name="culture"></param>
        /// <returns></returns>
        public object Convert(object value,
                           Type targetType,
                           object parameter,
                           CultureInfo culture)
        {
            if (value != null && value.ToString().Trim() != "")
            {
                DateTime date = (DateTime)value;
                //return date.ToShortDateString();
                //return date.ToString("yyyy年MM月dd日 HH:mm:ss");
                return date.ToString("yyyy-MM-dd");
            }
            else
            {
                return "";
            }

        }

        public object ConvertBack(object value,
                                  Type targetType,
                                  object parameter,
                                  CultureInfo culture)
        {
            string strValue = value.ToString();
            DateTime resultDateTime;
            if (DateTime.TryParse(strValue, out resultDateTime))
            {
                return resultDateTime;
            }
            return value;
        }
     }  



 /// <summary>
    /// 把代码转化成指定的类容
    /// </summary>
    /// <param name="value"></param>
    /// <param name="targetType"></param>
    /// <param name="parameter"></param>
    /// <param name="culture"></param>
    /// <returns></returns>
    public class ConvtoBSfcodeToStr : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            //if (targetType != typeof(String)) throw new InvalidOperationException("The target must be a integer!");
            return (value.ToString() == "01" ? "在职" : "离职");
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            //if (targetType != typeof(Int32)) throw new InvalidOperationException("The target must be a String!");
            return (value.ToString() == "在职" ? "01" : "02");
        }   
     }  

上面是两个自定义的类型转换器

下面是在XAML文档中的引用

一：DateTimeConverter转换器的使用

1：添加引用
　　 xmlns:local="clr-namespace:KX_EHR"
           >
    
    2：定义
    <UserControl.Resources>
        <local:DateTimeConverter x:Key="DateConverter" />
    </UserControl.Resources>
    
    3：应用
 <TextBlock Text="{Binding Uoperatedate, Converter={StaticResource DateConverter}}" />

二：ConvtoBSfcodeToStr转换器的使用

1：添加引用
　　 xmlns:localConv="clr-namespace:KX_EHR.Class"
           >
    
    2：定义
    <UserControl.Resources>
        <localConv:ConvtoBSfcodeToStr x:Key="ConverBStoStr"/>
    </UserControl.Resources>
    
    3：应用
 <TextBlock Text="{Binding 员工状态,Converter={StaticResource ConverBStoStr}}"/>