项目结构如下：
<Window x:Class="MVVMDemo.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"> <Grid> <Label Content="学号" Height="28" HorizontalAlignment="Left" Margin="54,23,0,0" Name="labelStudentId" VerticalAlignment="Top" /> <TextBox Text="{Binding Student.StudentId}" IsReadOnly="True" Height="23" HorizontalAlignment="Right" Margin="0,27,289,0" Name="textBoxStudentId" VerticalAlignment="Top" Width="120" /> <Label Content="姓名" Height="28" HorizontalAlignment="Left" Margin="54,61,0,0" Name="labelStudentName" VerticalAlignment="Top" /> <TextBox Text="{Binding Student.StudentName}" IsReadOnly="True" Height="23" HorizontalAlignment="Left" Margin="94,65,0,0" Name="textBoxStudentName" VerticalAlignment="Top" Width="120" /> <Label Content="年龄" Height="28" HorizontalAlignment="Left" Margin="54,94,0,0" Name="labelStudentAge" VerticalAlignment="Top" /> <TextBox Text="{Binding Student.StudentAge}" IsReadOnly="True" Height="23" HorizontalAlignment="Left" Margin="94,99,0,0" Name="textBoxStudentAge" VerticalAlignment="Top" Width="120" /> <Label Content="Email" Height="28" HorizontalAlignment="Left" Margin="50,138,0,0" Name="labelStudentEmail" VerticalAlignment="Top" /> <TextBox Text="{Binding Student.StudentEmail}" IsReadOnly="True" Height="23" HorizontalAlignment="Left" Margin="94,141,0,0" Name="textBoxStudentEmail" VerticalAlignment="Top" Width="120" /> <Label Content="性别" Height="28" HorizontalAlignment="Left" Margin="57,176,0,0" Name="labelStudentSex" VerticalAlignment="Top" /> <TextBox Text="{Binding Student.StudentSex}" IsReadOnly="True" Height="23" HorizontalAlignment="Left" Margin="94,180,0,0" Name="textBoxStudentSex" VerticalAlignment="Top" Width="120" /> <Button Command="{Binding ShowCommand}" Content="显示" Height="23" Margin="266,28,162,260" Name="buttonShow" Width="75" /> <Button Command="{Binding ResetCommand}" Content="重置" Height="23" HorizontalAlignment="Left" Margin="266,83,0,0" Name="button1" VerticalAlignment="Top" Width="75" /> </Grid> </Window> <!-- MVVM，可以很好的配合WPF的数据绑定机制来实现UI与逻辑代码的分离， MVVM中的View表示界面，负责页面显示，ViewModel负责逻辑处理，包括 准备绑定的数据和命令，ViewModel通过View的DataContext属性绑定至View， Model为业务模型，供ViewModel使用 --> <!-- ICommand接口中的Execute（）方法用于命令的执行，CanExecute（）方法用于指示当前命令 在目标元素上是否可用，当这种可用性发生改变时便会触发接口中的CanExecuteChanged事件。 我们可以将实现了ICommand接口的命令DelegateCommand赋值给Button（命令源）的Command 属性（只有实现了ICommandSource接口的元素才拥有该属性），这样Button便与命令进行了绑定。 -->
using System.ComponentModel;
namespace MVVMDemo.Model
{
public class StudentModel : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
public void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
/// <summary>
/// 学号
/// </summary>
private int studentId;
public int StudentId
{
get { return studentId; }
set
{
studentId = value;
OnPropertyChanged("StudentId");
}
}
/// <summary>
/// 姓名
/// </summary>
private string studentName;
public string StudentName
{
get { return studentName; }
set
{
studentName = value;
OnPropertyChanged("StudentName");
}
}
/// <summary>
/// 年龄
/// </summary>
private int studentAge;
public int StudentAge
{
get { return studentAge; }
set
{
studentAge = value;
OnPropertyChanged("StudentAge");
}
}
/// <summary>
/// Email
/// </summary>
private string studentEmail;
public string StudentEmail
{
get { return studentEmail; }
set
{
studentEmail = value;
OnPropertyChanged("StudentEmail");
}
}
/// <summary>
/// 性别
/// </summary>
private string studentSex;
public string StudentSex
{
get { return studentSex; }
set
{
studentSex = value;
OnPropertyChanged("StudentSex");
}
}
}
}
using System;
using System.Windows.Input;
namespace MVVMDemo.Helper
{
public class DelegateCommandHelper : ICommand
{
public Action<object> ExecuteCommand = null;
public Func<object, bool> CanExecuteCommand = null;
public event EventHandler CanExecuteChanged;
public bool CanExecute(object parameter)
{
if (CanExecuteCommand != null)
{
return this.CanExecuteCommand(parameter);
}
return true;
}
public void Execute(object parameter)
{
if (this.ExecuteCommand != null) this.ExecuteCommand(parameter);
}
public void RaiseCanExecuteChanged()
{
if (CanExecuteChanged != null) CanExecuteChanged(this, EventArgs.Empty);
}
}
}
using System;
using MVVMDemo.Helper;
using MVVMDemo.Model;
namespace MVVMDemo.ViewModel
{
public class StudentViewModel
{
//显示信息
public DelegateCommandHelper ShowCommand { get; set; }
//重置信息
public DelegateCommandHelper ResetCommand { get; set; }
public StudentModel Student { get; set; }
public StudentViewModel()
{
Student = new StudentModel();
ShowCommand = new DelegateCommandHelper();
ResetCommand = new DelegateCommandHelper();
ShowCommand.ExecuteCommand = new Action<object>(ShowStudentData);
ResetCommand.ExecuteCommand = new Action<object>(ResetStudentData);
}
/// <summary>
/// 显示内容
/// </summary>
/// <param name="obj"></param>
private void ShowStudentData(object obj)
{
Student.StudentId = 1;
Student.StudentName = "令狐冲";
Student.StudentAge = 18;
Student.StudentEmail = "linghuchong@163.com";
Student.StudentSex = "大帅哥";
}
/// <summary>
/// 重置内容
/// </summary>
/// <param name="obj"></param>
private void ResetStudentData(object obj)
{
Student.StudentId = 0;
Student.StudentName ="重置";
Student.StudentAge = 0;
Student.StudentEmail = "重置";
Student.StudentSex = "重置";
}
}
}
using System.Windows;
using MVVMDemo.ViewModel;
namespace MVVMDemo
{
/// <summary>
/// MainWindow.xaml 的交互逻辑
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
this.DataContext = new StudentViewModel();
}
}
}
方式二：
目录结构如下：
using Microsoft.Practices.Prism.ViewModel;
namespace MVVM_PrismDemo2.Models
{
public class StudentModel : NotificationObject
{
private string studentId;
public string StudentId
{
get { return studentId; }
set
{
studentId = value;
RaisePropertyChanged("StudentId");
}
}
private string studentName;
public string StudentName
{
get { return studentName; }
set
{
studentName = value;
RaisePropertyChanged("StudentName");
}
}
private string studentAge;
public string StudentAge
{
get { return studentAge; }
set
{
studentAge = value;
RaisePropertyChanged("StudentAge");
}
}
private string studentEmail;
public string StudentEmail
{
get { return studentEmail; }
set
{
studentEmail = value;
RaisePropertyChanged("StudentEmail");
}
}
private string studentSex;
public string StudentSex
{
get { return studentSex; }
set
{
studentSex = value;
RaisePropertyChanged("StudentSex");
}
}
}
}
using System;
using Microsoft.Practices.Prism.Commands;
using Microsoft.Practices.Prism.ViewModel;
using MVVM_PrismDemo2.Models;
namespace MVVM_PrismDemo2.ViewModels
{
class StudentViewModel :NotificationObject
{
/// <summary>
/// 定义命令属性
/// </summary>
public DelegateCommand DisplayDataCommand { get; set; }
public DelegateCommand ResetDataCommand { get; set; }
private StudentModel student;
public StudentModel Student
{
get { return student; }
set
{
student = value;
}
}
public StudentViewModel()
{
Student = new StudentModel();
DisplayData();
//初始化命令属性
DisplayDataCommand = new DelegateCommand(new Action(DisplayData));
ResetDataCommand = new DelegateCommand(new Action(ResetData));
}
private void DisplayData()
{
Student.StudentId = "1";
Student.StudentName = "令狐冲";
Student.StudentAge = "18";
Student.StudentEmail = "linghuchong@163.com";
Student.StudentSex = "大帅哥";
}
private void ResetData()
{
Student.StudentId = "0";
Student.StudentName = "重置";
Student.StudentAge = "0";
Student.StudentEmail = "重置";
Student.StudentSex = "重置";
}
}
}
<Window x:Class="MVVM_PrismDemo2.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"> <Grid> <Label Content="学号" Height="28" HorizontalAlignment="Left" Margin="54,23,0,0" Name="labelStudentId" VerticalAlignment="Top" /> <TextBox Text="{Binding Student.StudentId, Mode=TwoWay}" IsReadOnly="True" Height="23" HorizontalAlignment="Right" Margin="0,27,289,0" Name="textBoxStudentId" VerticalAlignment="Top" Width="120" /> <Label Content="姓名" Height="28" HorizontalAlignment="Left" Margin="54,61,0,0" Name="labelStudentName" VerticalAlignment="Top" /> <TextBox Text="{Binding Student.StudentName, Mode=TwoWay}" IsReadOnly="True" Height="23" HorizontalAlignment="Left" Margin="94,65,0,0" Name="textBoxStudentName" VerticalAlignment="Top" Width="120" /> <Label Content="年龄" Height="28" HorizontalAlignment="Left" Margin="54,94,0,0" Name="labelStudentAge" VerticalAlignment="Top" /> <TextBox Text="{Binding Student.StudentAge, Mode=TwoWay}" IsReadOnly="True" Height="23" HorizontalAlignment="Left" Margin="94,99,0,0" Name="textBoxStudentAge" VerticalAlignment="Top" Width="120" /> <Label Content="Email" Height="28" HorizontalAlignment="Left" Margin="50,138,0,0" Name="labelStudentEmail" VerticalAlignment="Top" /> <TextBox Text="{Binding Student.StudentEmail, Mode=TwoWay}" IsReadOnly="True" Height="23" HorizontalAlignment="Left" Margin="94,141,0,0" Name="textBoxStudentEmail" VerticalAlignment="Top" Width="120" /> <Label Content="性别" Height="28" HorizontalAlignment="Left" Margin="57,176,0,0" Name="labelStudentSex" VerticalAlignment="Top" /> <TextBox Text="{Binding Student.StudentSex, Mode=TwoWay}" IsReadOnly="True" Height="23" HorizontalAlignment="Left" Margin="94,180,0,0" Name="textBoxStudentSex" VerticalAlignment="Top" Width="120" /> <Button Command="{Binding DisplayDataCommand}" Content="显示" Height="23" Margin="266,28,162,260" Name="buttonShow" Width="75" /> <Button Command="{Binding ResetDataCommand}" Content="重置" Height="23" HorizontalAlignment="Left" Margin="266,83,0,0" Name="button1" VerticalAlignment="Top" Width="75" /> </Grid> </Window>
using System.Windows;
using MVVM_PrismDemo2.ViewModels;
namespace MVVM_PrismDemo2
{
/// <summary>
/// MainWindow.xaml 的交互逻辑
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
this.DataContext = new StudentViewModel();
}
}
}
