SilverLight-Validation:一、ValidatesOnExpression和NotifyOnValidationError_.NET_编程开发_程序员俱乐部

ylbtech-SilverLight-DataBindings_BindingADataObjects_Validation:ValidatesOnExpression和NotifyOnValidationError

• 1.A,数据源返回顶部
• 1.B, ValidatesOnExpression
• 1.C, NotifyOnValidationError

1.A,数据源返回顶部 1, class="code_img_closed" src="/Upload/Images/2013112515/0015B68B3C38AA5B.gif" alt="" />logs_code_hide('a0a573a4-8f2e-47ed-85fb-82dbfd5105d6',event)" src="/Upload/Images/2013112515/2B1B950FA3DF188F.gif" alt="" />

using System;

namespace SL3ValidationYlbtechApp.Access
{
    /// <summary>
    /// 人类
    /// </summary>
    public class Person
    {
        int _personId;
        /// <summary>
        /// 编号【PK】
        /// </summary>
        public int PersonId
        {
            get { return _personId; }
            set { _personId = value; }
        }
        string _username; //长度
        /// <summary>
        /// 姓名
        /// </summary>
        public string Username
        {
            get { return _username; }
            set { _username = value; }
        }
        string _sex;    //用户自定义
        /// <summary>
        /// 性别【CK】男|女|未知
        /// </summary>
        public string Sex
        {
            get { return _sex; }
            set { _sex = value; }
        }
        int _age;   //范围
        /// <summary>
        /// 年龄
        /// </summary>
        public int Age
        {
            get { return _age; }
            set { _age = value; }
        }
        string _email;  //正则
        /// <summary>
        /// 电子邮箱
        /// </summary>
        public string Email
        {
            get { return _email; }
            set { _email = value; }
        }
        DateTime _addedDate;
        /// <summary>
        /// 添加日期
        /// </summary>
        public DateTime AddedDate
        {
            get { return _addedDate; }
            set { _addedDate = value; }
        }
        string _description;
        /// <summary>
        /// 描述
        /// </summary>
        public string Description
        {
            get { return _description; }
            set { _description = value; }
        }

        /// <summary>
        /// 空参构造
        /// </summary>
        public Person() { }
        /// <summary>
        /// 全参构造
        /// </summary>
        /// <param name="personId"></param>
        /// <param name="username"></param>
        /// <param name="sex"></param>
        /// <param name="age"></param>
        /// <param name="email"></param>
        /// <param name="addedDate"></param>
        /// <param name="description"></param>
        public Person(int personId, string username, string sex, int age, string email
            , DateTime addedDate, string description)
        {
            _personId = personId;
            _username = username;
            _sex = sex;
            _age = age;
            _email = email;

            _addedDate = addedDate;
            _description = description;
        }

        /// <summary>
        /// GetModel
        /// </summary>
        /// <returns></returns>
        public static Person GetModel()
        {
            Person dal = new Person(1001, "rain", "男", 24, "ylbtech@qq.com"
                , new DateTime(2013, 11, 21), "静以修身，俭以养德");
            return dal;
        }
    }
}

View Code

4,

1.B, ValidatesOnExpression 1, 2, 2.1/3,[无] 2.2/3,

<Grid x:Name="gridDetailPerson" Background="White">
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"></RowDefinition>
        <RowDefinition Height="Auto"></RowDefinition>
    </Grid.RowDefinitions>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="100"></ColumnDefinition>
        <ColumnDefinition Width="*"></ColumnDefinition>
        <ColumnDefinition Width="100"></ColumnDefinition>
    </Grid.ColumnDefinitions>
    <TextBlock Grid.Row="0" Grid.Column="0" Margin="7" Text="姓名"></TextBlock>
    <TextBox Grid.Row="0" Grid.Column="1" Margin="5" Text="{Binding Username}"></TextBox>
        
    <TextBlock Grid.Row="1" Grid.Column="0" Margin="7" Text="年龄"></TextBlock>
    <TextBox Grid.Row="1" Grid.Column="1" Margin="5" Text="{Binding Age,Mode=TwoWay,ValidatesOnExceptions=True}"></TextBox>
</Grid>

2.3/3,

using System.Windows.Controls;

using SL3ValidationYlbtechApp.Access;
namespace SL3ValidationYlbtechApp.DataBinding.BindingADataObjects.Validation
{
    public partial class ValidatesOnExpression : UserControl
    {
        public ValidatesOnExpression()
        {
            InitializeComponent();
            gridDetailPerson.DataContext = Person.GetModel();
        }
    }
}

View Code

2B, Person.cs

int _age;   //范围
/// <summary>
/// 年龄
/// </summary>
public int Age
{
    get { return _age; }
    set
    {
        if (value < 0) throw new ArgumentException("不能小于0");
        _age = value;
    }
}

3,

4, 1.C, NotifyOnValidationError返回顶部 1, 2, 2.1/3,[无] 2.2/3,

<Grid x:Name="gridDetailPerson" Background="White" BindingValidationError="gridDetailPerson_BindingValidationError">
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"></RowDefinition>
        <RowDefinition Height="Auto"></RowDefinition>
        <RowDefinition Height="Auto"></RowDefinition>
        <RowDefinition Height="Auto"></RowDefinition>
    </Grid.RowDefinitions>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="100"></ColumnDefinition>
        <ColumnDefinition Width="*"></ColumnDefinition>
        <ColumnDefinition Width="100"></ColumnDefinition>
    </Grid.ColumnDefinitions>
    <TextBlock Grid.Row="0" Grid.Column="0" Margin="7" Text="姓名"></TextBlock>
    <TextBox Grid.Row="0" Grid.Column="1" Margin="5" Text="{Binding Username}"></TextBox>

    <TextBlock Grid.Row="1" Grid.Column="0" Margin="7" Text="年龄"></TextBlock>
    <TextBox Grid.Row="1" Grid.Column="1" Margin="5" Name="txtAge"
             Text="{Binding Age,Mode=TwoWay,ValidatesOnExceptions=True, NotifyOnValidationError=True}"></TextBox>
    
    <TextBlock Grid.Row="3" Grid.Column="0" Grid.ColumnSpan="2" Margin="7"
                Name="txtBlkTip" Text="" Foreground="Red"></TextBlock>
</Grid>

2.3/3,

using System.Windows.Controls;

using SL3ValidationYlbtechApp.Access;
namespace SL3ValidationYlbtechApp.DataBinding.BindingADataObjects.Validation
{
    public partial class NotifyOnValidationError : UserControl
    {
        public NotifyOnValidationError()
        {
            InitializeComponent();
            gridDetailPerson.DataContext = Person.GetModel();
        }

        private void gridDetailPerson_BindingValidationError(object sender, ValidationErrorEventArgs e)
        {
            //显示错误
            txtBlkTip.Text = e.Error.Exception.Message;
            txtBlkTip.Text += "\n存储值：" + ((Person)gridDetailPerson.DataContext).Age;

            //建议用户再试一次
            txtAge.Focus();
        }
    }
}

3,

4, 1.D,返回顶部   作者：ylbtech
出处：http://ylbtech.cnblogs.com/
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