WPF使用ObservableCollection＜T＞来绑定ItemControl类容器 例子_itemsource 绑定 observablecollection,add

一.新建Model，User.cs类，继承INPC接口

  public class User : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        private string _age;
        public string Age
        {
            get { return _age; }
            set
            {
                _age = value;
                if (PropertyChanged != null)
                {
                    PropertyChanged(this, new PropertyChangedEventArgs("Age"));
                }
            }
        }
 
        private string _name;
        public string Name
        {
            get { return _name; }
            set
            {
                _name = value;
                if (PropertyChanged != null)
                {
                    PropertyChanged(this, new PropertyChangedEventArgs("Name"));
                }
            }
        }
 
        private string _sex;
        public string Sex
        {
            get { return _sex; }
            set
            {
                _sex = value;
                if (PropertyChanged != null)
                {
                    PropertyChanged(this, new PropertyChangedEventArgs("Sex"));
                }
            }
        }
    }

二.XAML代码

<Window x:Class="ObservableCollectionDemo.MainWindow"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <StackPanel>
            <DataGrid Name="dgUser" Height="200"  MouseLeftButtonUp="dgStudent_MouseLeftButtonUp"></DataGrid>
            <StackPanel >
                <TextBox Name="txtName" ></TextBox>
                <TextBox Name="txtAge" ></TextBox>
                <TextBox Name="txtSex" ></TextBox>
                <Button  Name="btnAdd" Content="添加" Click="btnAdd_Click"></Button>
                <Button  Name="btnUpdate" Content="编辑" Click="btnUpdate_Click"></Button>
                <Button Name="btnDelete" Content="删除" Click="btnDelete_Click"></Button>
            </StackPanel>
        </StackPanel>
    </Grid>
</Window>

三.后台代码：

namespace ObservableCollectionDemo
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            Loaded += Window_Loaded;
        }
        
        public ObservableCollection<User> datalist = new ObservableCollection<User>();
 
        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            dgUser.ItemsSource = datalist;//绑定ItemSource,使用ObervableCollection
        }
 
        private void btnAdd_Click(object sender, RoutedEventArgs e)
        {
            User user = new User();
            user.Name = txtName.Text;
            user.Age = txtAge.Text;
            user.Sex = txtSex.Text;
            datalist.Add(user);
        }
 
        private void btnUpdate_Click(object sender, RoutedEventArgs e)
        {
            foreach (var item in datalist)
            {
                if (item.Name == txtName.Text)
                {
                    item.Age = txtAge.Text;
                    item.Sex = txtSex.Text;
                }
            }
        }
 
        private void btnDelete_Click(object sender, RoutedEventArgs e)
        {
            var ca = (User)this.dgUser.SelectedItem;
            datalist.Remove(ca);
        }
 
        //单机选中一行，修改下方编辑窗的内容
        private void dgStudent_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            var selectUser = (User)this.dgUser.SelectedItem;
            if (selectUser != null)
            {
                txtName.Text = selectUser.Name;
                txtAge.Text = selectUser.Age;
                txtSex.Text = selectUser.Sex;
            }
        }
    }
}