Wpf Datagrid不显示文本框数据？

Question

嗨，我正在一个简单的WPF应用程序。我的问题是，我想要在文本框中写东西，当我点击按钮时，它会在datagrid中显示我。 我的代码是：

C＃：

public partial class MainWindow : Window 
    { 
     public ObservableCollection<VLANS> vlan { get; set; } 
     public MainWindow() 
     { 
      InitializeComponent(); 
      vlan=new ObservableCollection<VLANS>(); 
      this.DataContext=this; 
     } 

     private void Button_Click(object sender, RoutedEventArgs e) 
     { 
      var item = new VLANS(); 
      item.vlanName = t1.Text; 
      //dg.ItemsSource = vlanName; 
      dg.ItemsSource = item.vlanName; 
     } 
    } 

    public class VLANS 
    { 
     public string vlanName { get; set; } 

    } 
} 

XAML：

<Window x:Class="TextboxToDatagridTest.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> 
     <Grid.RowDefinitions> 
      <RowDefinition Height="100"/> 
      <RowDefinition Height="200"/> 
     </Grid.RowDefinitions> 
     <TextBox 
      Name="t1" 
      Grid.Row="0" 
      Width="150" 
      Height="50" 
      Margin="200,0,0,0" 
      /> 
     <Button 
      Grid.Row="0" 
      Width="150" 
      Height="40" 
      Content="Button" FontSize="25" 
      HorizontalAlignment="Left" 
      Margin="80,0,0,0" Click="Button_Click"> 
     </Button> 
     <DataGrid 
      Name="dg" 
      Grid.Row="1"> 
      <DataGrid.Columns> 
       <DataGridTextColumn 
       Header="VLAN Name" Binding="{Binding Path=vlanName}"/> 

      </DataGrid.Columns> 
     </DataGrid> 

    </Grid> 
</Window> 

快照：

问题出在哪里，我怎么能传递文本数据的DataGrid？任何帮助将是非常可观的。

Answer 1

private void Button_Click(object sender, RoutedEventArgs e) 
{ 
    var item = new VLANS(); 
    item.vlanName = t1.Text; 

    vlan.Add(item); 
} 

的XAML：

<DataGrid ItemsSource="{Binding vlan}" AutoGenerateColumns="False" Grid.Row="1"> 
      <DataGrid.Columns> 
       <DataGridTextColumn 
       Header="VLAN Name" Binding="{Binding Path=vlanName}"/> 

      </DataGrid.Columns> 
</DataGrid>