silverlight客户端验证控件ValidationSummary及DescriptionViewer

using System;
 using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
namespace ValidateTest
{
    public partial class MainPage : UserControl
    {
        ViewModel data;
        public MainPage()
        {
            InitializeComponent();
            data = new ViewModel() { Id = 3, Name = "gaoshengjie", Age = 20 };
            this.DataContext = data;
            
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            MessageBox.Show(data.Id.ToString());
        }
    }
    public class ViewModel:INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        public void NotifyPropertyChanged(string propertyName)
        {
            if (this.PropertyChanged != null)
            {
                this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }
        private int id;
        private string name;
        private int age;
        [Display(Name = "年龄", Description = "必须在18以上")]
        [Range(18, 150,ErrorMessage="不能小于18岁!")]
        [Required(ErrorMessage="不能为空!")]
        public int Age
        {
            get 
            { 
                return age; 
            }
            set 
            {
                Validator.ValidateProperty(value, new ValidationContext(this, null, null) { MemberName = "Age" });
                age = value; 
                this.NotifyPropertyChanged("Age"); 
            }
        }
        [Display(Name = "姓名", Description = "不能为空")]
        [RegularExpression(@"^gao[a-zA-Z]{1,50}$", ErrorMessage = "必须以gao开头!")]
        [Required(ErrorMessage = "不能为空!")]
        public string Name
        {
            get 
            { 
                return name;
            }
            set 
            {
                Validator.ValidateProperty(value, new ValidationContext(this, null, null) { MemberName = "Name" });
                name = value;
                this.NotifyPropertyChanged("Name"); 
            }
        }
        [Display(Name = "编号", Description = "唯一标识,必须大于1!")]
        [Range(1, 9999, ErrorMessage = "范围在1-9999")]
        [Required(ErrorMessage = "不能为空!")]
        public int Id
        {
            get 
            { 
                return id; 
            }
            set 
            {
                Validator.ValidateProperty(value, new ValidationContext(this, null, null) { MemberName = "Id" });
                id = value; 
                this.NotifyPropertyChanged("Id"); 
            }
        }
    }
}

 

<UserControl xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"  
             x:Class="ValidateTest.MainPage"
    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:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
      
    d:DesignHeight="300" d:DesignWidth="400">

    <StackPanel x:Name="LayoutRoot" Background="White">
        <StackPanel Orientation="Horizontal">
        <TextBox x:Name="txtId" Text="{Binding Id,Mode=TwoWay,ValidatesOnExceptions=true, NotifyOnValidationError=true}"></TextBox>
            <sdk:DescriptionViewer Target="{Binding ElementName=txtId}"/>
        </StackPanel>
        <StackPanel Orientation="Horizontal">
        <TextBox x:Name="txtName" Text="{Binding Name,Mode=TwoWay,ValidatesOnExceptions=true, NotifyOnValidationError=true}"></TextBox>
            <sdk:DescriptionViewer Target="{Binding ElementName=txtName}"/>
        </StackPanel>
        <StackPanel Orientation="Horizontal">
        <TextBox x:Name="txtAge" Text="{Binding Age,Mode=TwoWay,ValidatesOnExceptions=true, NotifyOnValidationError=true}"></TextBox>
            <sdk:DescriptionViewer  Target="{Binding ElementName=txtAge}"/>
        </StackPanel>
        <Button Content="提交" Click="Button_Click"/>
        <sdk:ValidationSummary />
    </StackPanel>
</UserControl>

需要注意的是:

1.命名空间的引用

using System.ComponentModel;
using System.ComponentModel.DataAnnotations;

引用以后才可以使用以下内容

 [Display(Name = "年龄", Description = "必须在18以上")]
 [Range(18, 150,ErrorMessage="不能小于18岁!")]
 [Required(ErrorMessage="不能为空")]s

[RegularExpression(@"^gao[a-zA-Z]{1,50}$", ErrorMessage = "必须以gao开头!")]

Validator.ValidateProperty(value, new ValidationContext(this, null, null) { MemberName = "Age" });
2.
DescriptionViewer

ValidationSummary

这两个控件如果没有有工具箱中找到则可以"右键-选择项"在弹出的对话框中找到对应的选中后点确定即可.