先看效果：
上面的绑定值都是我们自定义的属性，有了以上的提示，那么我们可以轻松绑定字段，再也不用担心错误了。附带源码。
目录
1.建立mvvm项目
1.首先建立一个项目，采用mvvm模式，其中MainWindow.xaml相当于View层，其余各层都比较简单。
2.BindingBase.cs
cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
namespace WpfDataContextDemo.Common
{
public class BindingBase : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
//protected virtual void OnPropertyChanged(string propertyName)
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = "")//此处使用特性
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
}3.StudentInfo.cs
cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WpfDataContextDemo.Common;
namespace WpfDataContextDemo.Model
{
public class StudentInfo : BindingBase
{
private int id;
public int Id
{
get { return id; }
set { id = value; OnPropertyChanged(); }
}
private string name;
public string Name
{
get { return name; }
set { name = value; OnPropertyChanged(); }
}
private int age;
public int Age
{
get { return age; }
set { age = value; OnPropertyChanged(); }
}
private bool b;
public bool B
{
get { return b; }
set { b = value; OnPropertyChanged(); }
}
}
}4.MainWindowViewModel.cs
cs
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WpfDataContextDemo.Model;
namespace WpfDataContextDemo.ViewModel
{
public class MainWindowViewModel
{
public ObservableCollection<StudentInfo> Infos { get; set; }
public MainWindowViewModel()
{
Infos = new ObservableCollection<StudentInfo>()
{
new StudentInfo(){ Id=1, Age=11, Name="Tom",B=false},
new StudentInfo(){ Id=2, Age=12, Name="Darren",B=false},
new StudentInfo(){ Id=3, Age=13, Name="Jacky",B=false},
new StudentInfo(){ Id=4, Age=14, Name="Andy",B=false}
};
}
}
}2.cs后台使用DataContext绑定
1.MainWindow.xaml.cs
只有一句话最重要
cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using WpfDataContextDemo.ViewModel;
namespace WpfDataContextDemo
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
this.DataContext = new MainWindowViewModel();
}
}
}2.其中MainWindow.xaml
cs
<Window x:Class="WpfDataContextDemo.MainWindow"
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"
xmlns:local="clr-namespace:WpfDataContextDemo"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid>
<StackPanel Height="295" HorizontalAlignment="Left" Margin="10,10,0,0" Name="stackPanel1" VerticalAlignment="Top" Width="427">
<TextBlock Text="{Binding Infos.Count }" Margin="5" />
<TextBlock Height="23" Name="textBlock1" Text="学员编号:" />
<TextBox Height="23" Name="txtStudentId" Width="301" HorizontalAlignment="Left" />
<TextBlock Height="23" Name="textBlock2" Text="学员列表:" />
<ListBox Height="156" Name="lbStudent" Width="305" HorizontalAlignment="Left" ItemsSource="{Binding Infos}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Name="stackPanel2" Orientation="Horizontal">
<TextBlock Text="{Binding Id ,Mode=TwoWay}" Margin="5" Background="Red"/>
<TextBlock x:Name="aa" Text="{Binding Name,Mode=TwoWay, UpdateSourceTrigger=Explicit}" Margin="5"/>
<TextBlock Text="{Binding Age,Mode=TwoWay}" Margin="5"/>
<TextBlock Text="{Binding B,Mode=TwoWay}" Margin="5"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</Grid>
</Window>此时，我们输入Binding的时候，不会显示Id，Name这些字段。
3.xaml前台使用DataContext绑定
1.先屏蔽后台cs的代码
2.前台MainWindow.xaml
cs
<Window x:Class="WpfDataContextDemo.MainWindow"
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"
xmlns:local="clr-namespace:WpfDataContextDemo"
xmlns:local1="clr-namespace:WpfDataContextDemo.ViewModel"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Window.DataContext>
<local1:MainWindowViewModel />
</Window.DataContext>
<Grid>
<StackPanel Height="295" HorizontalAlignment="Left" Margin="10,10,0,0" Name="stackPanel1" VerticalAlignment="Top" Width="427">
<TextBlock Text="{Binding Infos.Count }" Margin="5" />
<TextBlock Height="23" Name="textBlock1" Text="学员编号:" />
<TextBox Height="23" Name="txtStudentId" Width="301" HorizontalAlignment="Left" />
<TextBlock Height="23" Name="textBlock2" Text="学员列表:" />
<ListBox Height="156" Name="lbStudent" Width="305" HorizontalAlignment="Left" ItemsSource="{Binding in}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Name="stackPanel2" Orientation="Horizontal">
<TextBlock Text="{Binding Id ,Mode=TwoWay}" Margin="5" Background="Red"/>
<TextBlock x:Name="aa" Text="{Binding Name,Mode=TwoWay, UpdateSourceTrigger=Explicit}" Margin="5"/>
<TextBlock Text="{Binding Age,Mode=TwoWay}" Margin="5"/>
<TextBlock Text="{Binding B,Mode=TwoWay}" Margin="5"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</Grid>
</Window>3.最主要的是，可以点击出来，非常的清晰明了
4.xaml前台使用DataContext单例模式绑定
1.MainWindowViewModel.cs
cs
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WpfDataContextDemo.Model;
namespace WpfDataContextDemo.ViewModel
{
public class MainWindowViewModel
{
//public ObservableCollection<StudentInfo> Infos { get; set; }
//public MainWindowViewModel()
//{
// Infos = new ObservableCollection<StudentInfo>()
// {
// new StudentInfo(){ Id=1, Age=11, Name="Tom",B=false},
// new StudentInfo(){ Id=2, Age=12, Name="Darren",B=false},
// new StudentInfo(){ Id=3, Age=13, Name="Jacky",B=false},
// new StudentInfo(){ Id=4, Age=14, Name="Andy",B=false}
// };
//}
private static readonly MainWindowViewModel instance = new MainWindowViewModel();
public static MainWindowViewModel Instance
{
get { return instance; }
}
public ObservableCollection<StudentInfo> Infos { get; set; }
public MainWindowViewModel()
{
Infos = new ObservableCollection<StudentInfo>()
{
new StudentInfo(){ Id=1, Age=11, Name="Tom",B=false},
new StudentInfo(){ Id=2, Age=12, Name="Darren",B=false},
new StudentInfo(){ Id=3, Age=13, Name="Jacky",B=false},
new StudentInfo(){ Id=4, Age=14, Name="Andy",B=false}
};
}
}
}2.MainWindow.xaml
cs
<Window x:Class="WpfDataContextDemo.MainWindow"
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"
xmlns:local="clr-namespace:WpfDataContextDemo"
xmlns:local1="clr-namespace:WpfDataContextDemo.ViewModel"
mc:Ignorable="d"
DataContext="{x:Static local1:MainWindowViewModel.Instance}"
Title="MainWindow" Height="450" Width="800">
<!--<Window.DataContext>
<local1:MainWindowViewModel />
</Window.DataContext>-->
<Grid>
<StackPanel Height="295" HorizontalAlignment="Left" Margin="10,10,0,0" Name="stackPanel1" VerticalAlignment="Top" Width="427">
<TextBlock Text="{Binding Infos.Count }" Margin="5" />
<TextBlock Height="23" Name="textBlock1" Text="学员编号:" />
<TextBox Height="23" Name="txtStudentId" Width="301" HorizontalAlignment="Left" />
<TextBlock Height="23" Name="textBlock2" Text="学员列表:" />
<ListBox Height="156" Name="lbStudent" Width="305" HorizontalAlignment="Left" ItemsSource="{Binding Infos}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Name="stackPanel2" Orientation="Horizontal">
<TextBlock Text="{Binding Id ,Mode=TwoWay}" Margin="5" Background="Red"/>
<TextBlock x:Name="aa" Text="{Binding Name ,Mode=TwoWay, UpdateSourceTrigger=Explicit}" Margin="5"/>
<TextBlock Text="{Binding Age,Mode=TwoWay}" Margin="5"/>
<TextBlock Text="{Binding B,Mode=TwoWay}" Margin="5"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</Grid>
</Window>