Dataform範圍驗證不起作用

Question

我試圖提出驗證錯誤： 1.當用戶輸入不是數字的US MSRP時，silverlight在離開字段 時顯示錯誤2.但是，如果在同一字段我輸入一個負數，即使有明確的範圍指定也不顯示錯誤
我需要更改什麼？

此外，作爲獎金的問題，我到底在XAML用來讀取值顯示（名稱=「我的名字是美國的建議零售價：」而不是明確指定別的

public class CalculatorParameters : INotifyPropertyChanged 
{ 
     private double _usMsrp; 

    public CalculatorParameters() 
    { 
    } 


    [Display(Name = "My Name is US MSRP:", 
     Description = "The residual value is based on the US MSRP, even with Euro-Delivery")] 
    [Range(0, 150000, ErrorMessage = "US MSRP must be a positive amount under $150,000")] 
    public double UsMsrp 
    { 
     get { return _usMsrp; } 
     set 
     { 
      _usMsrp = value; 
      if (PropertyChanged != null) 
       PropertyChanged(this, new PropertyChangedEventArgs("UsMsrp")); 
     } 
    } 

    #region INotifyPropertyChanged Members 

    public event PropertyChangedEventHandler PropertyChanged; 

    #endregion 

} 

而且這裏是XAML

<UserControl x:Class="Silverlight.ConfigEnhanced.UcFinance" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
     xmlns:my="clr-namespace:Silverlight.ConfigEnhanced" 
     xmlns:df="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data.DataForm.Toolkit" 
       xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
     mc:Ignorable="d" 
     d:DesignHeight="650" d:DesignWidth="500" > 
     <UserControl.Resources> 
      <my:CalculatorParameters x:Key="descriptor"/> 
     </UserControl.Resources> 
     <df:DataForm x:Name="df1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" CurrentItem="{StaticResource descriptor}" CommandButtonsVisibility="None" AutoGenerateFields="False" > 
      <df:DataForm.EditTemplate> 
       <DataTemplate> 
        <Grid x:Name="LayoutRoot" Background="White"> 
         <Grid.RowDefinitions> 
          <RowDefinition Height="160"></RowDefinition> 
          <RowDefinition Height="20"></RowDefinition> 
          <RowDefinition Height="*"></RowDefinition> 
          <RowDefinition Height="270"></RowDefinition> 
         </Grid.RowDefinitions> 
         <Grid.ColumnDefinitions> 
          <ColumnDefinition Width="*"></ColumnDefinition> 
          <ColumnDefinition Width="*"></ColumnDefinition> 
         </Grid.ColumnDefinitions> 
         <StackPanel Grid.Row="2" Grid.Column="0"> 
          <TextBlock Text="Leasing" HorizontalAlignment="Center" VerticalAlignment="Center" FontWeight="Bold" Margin="0,0,0,15" /> 
          <df:DataField Label="Term in Months"> 
           <TextBox Name="txtBoxLeaseTermInMonths" Text="{Binding LeaseTermInMonths, Mode=TwoWay}" GotFocus="RecomputeLease"/> 
          </df:DataField> 
          <df:DataField Label="Down Payment"> 
           <TextBox Name="txtBoxLeaseDownPayment" Text="{Binding LeaseDownPayment, Mode=TwoWay}" GotFocus="RecomputeLease"/> 
          </df:DataField> 
          <df:DataField Label="Money Factor"> 
           <TextBox Name="txtBoxLeaseMoneyFactor" Text="{Binding MoneyFactor, Mode=TwoWay}" GotFocus="RecomputeLease"/> 
          </df:DataField> 
          <df:DataField Label="US MSRP"> 
           <TextBox Name="txtBoxLeaseUsMsrp" Text="{Binding UsMsrp, Mode=TwoWay}" GotFocus="RecomputeLease"/> 
          </df:DataField> 
         </StackPanel> 
        </Grid> 
       </DataTemplate> 
      </df:DataForm.EditTemplate> 
     </df:DataForm> 
    </UserControl> 

Answer 1

http://betaforums.silverlight.net/forums/p/113795/257670.aspx