Question

我有一个程序将数据从4个textBox绑定到ListView。

XAML代码：

<Window x:Class="TestBindingData.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="324" Width="592">
    <Grid>
        <ListView Height="209" HorizontalAlignment="Left" Margin="12,64,0,0" Name="listView1" VerticalAlignment="Top" Width="546" >
            <ListView.View>
                <GridView>
                    <GridViewColumn DisplayMemberBinding="{Binding STT}" Header="STT" Width="50"/>
                    <GridViewColumn DisplayMemberBinding="{Binding HVT}" Header="Name" Width="200"/>
                    <GridViewColumn DisplayMemberBinding="{Binding Age}" Header="Age" Width="50"/>
                    <GridViewColumn DisplayMemberBinding="{Binding State}" Header="State" Width="200"/>
                </GridView>
            </ListView.View>
        </ListView>
        <TextBox Height="22" HorizontalAlignment="Left" Margin="99,25,0,0" Name="textBox1" VerticalAlignment="Top" Width="45" />
        <TextBox Height="22" HorizontalAlignment="Left" Margin="150,25,0,0" Name="textBox2" VerticalAlignment="Top" Width="138" />
        <TextBox Height="22" HorizontalAlignment="Left" Margin="294,25,0,0" Name="textBox3" VerticalAlignment="Top" Width="45" />
        <TextBox Height="22" HorizontalAlignment="Left" Margin="345,25,0,0" Name="textBox4" VerticalAlignment="Top" Width="92" />
        <Button Content="Add" Height="23" HorizontalAlignment="Left" Margin="461,27,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" />
    </Grid>
</Window>

MainWindow代码：

namespace TestBindingData
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
        class person
        {
            public string STT { get; set; }
            public string HVT { get; set; }
            public string Age { get; set; }
            public string State { get; set; }
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            List<person> people = new List<person>();
            people.Add(new person() { STT = textBox1.Text.ToString(), HVT = textBox2.Text.ToString(), Age = textBox3.Text.ToString(), State = textBox4.Text.ToString() });
            this.listView1.ItemsSource = people;
        }
    }
}

单击“添加”按钮后，程序将添加包含人员信息的行。但是我不能在第1行之后添加第2行，第3行...... 请帮忙，谢谢！

Answer 1

您应该使用可观察的集合作为源，这样您每次都不需要设置项目来源。可观察集合将在更改时通知，因此UI将响应列表的新添加。

Answer 2

试试这个 - ＆gt;

    public partial class MainWindow : Window
        {
            private ObservableCollection<person> _people;

            public ObservableCollection<person> people
            {
                get { return _people; }
                set { _people = value; }
            }
            public MainWindow()
            {
InitializeComponent();
                people = new ObservableCollection<person>();
            }
           public class person
            {
                public string STT { get; set; }
                public string HVT { get; set; }
                public string Age { get; set; }
                public string State { get; set; }
            }

            public void button1_Click(object sender, RoutedEventArgs e)
            {           
                people.Add(new person() { STT = textBox1.Text.ToString(), HVT = textBox2.Text.ToString(), Age = textBox3.Text.ToString(), State = textBox4.Text.ToString() });
                this.listView1.ItemsSource = people;
            }

        }

这将有效..：）

Answer 3

只需将listview绑定到ObservableCollection，它就会自动更新列表的内容。

<ListView ItemsSource="{Binding Persons}">
 ...
</ListView>

并在ViewModel（或后面的代码）中声明属性Persons：

Public ObservableCollection<Person> Persons
{
...
}

诀窍是ObservableCollection实现了INotifyCollectionChanged，因此它跟踪从集合中添加或删除项目的时间并更新源。

将数据从textBox绑定到ListView

3 个答案: