SilverLight.3-Validation:一、银光验证。ValidatesOnExpression和NotifyOnValidationError

ylbtech-SilverLight-DataBindings_BindingADataObjects_Validation:一、银光验证。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,

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, "[email protected]"

                , new DateTime(2013, 11, 21), "静以修身，俭以养德");

            return dal;

        }

    }

}

View Code

4,

1.B, ValidatesOnExpression

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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

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2.1/3,[无]

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<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

 

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