WPF DataGrid 数据绑定问题

[手在键盘敲很轻]

<Window x:Class="CSTK.Library.DownLoad.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:CSTK.Library.DownLoad"
        mc:Ignorable="d"
        Title="下载中心" Height="542.406" Width="1016.225" WindowStartupLocation="CenterScreen" ResizeMode="NoResize" MaxHeight="532.406" MaxWidth="1000" >
    <Grid>
        <Grid Margin="10,2,0,451" Background="Transparent" Height="50">
            <TextBox  BorderBrush="Black" Name="search_Word" FontSize="14" FontFamily="微软雅黑" Text="林" TextAlignment="Center" Width="100" Height="32" Padding="5" Margin="-50 0 0 8"/>
            <Button BorderBrush="Black"  FontSize="14" FontFamily="微软雅黑" Name="search" Margin="0,8,325,0" RenderTransformOrigin="0.211,-7.49" Click="Button_Click" HorizontalAlignment="Right" Width="89" Height="30" VerticalAlignment="Top">搜索</Button>
        </Grid>
        <Grid>
            <DataGrid Margin="10,63,10,9" AutoGenerateColumns="True" Name="dg_Table" CanUserAddRows="False">
                <DataGrid.Columns>
                    <DataGridTextColumn Header="ID" Binding="{Binding Path=ID}" Width="*"></DataGridTextColumn>
                    <DataGridTextColumn Header="歌曲名" Binding="{Binding Path=SongName}" Width="*"></DataGridTextColumn>
                    <DataGridTextColumn Header="歌手" Binding="{Binding Path=SingerName}" Width="*"></DataGridTextColumn>
                    <DataGridTextColumn Header="专辑名" Binding="{Binding Path=AlbumName}" Width="*"></DataGridTextColumn>
                    <DataGridTemplateColumn Header="操作">
                        <DataGridTemplateColumn.CellTemplate>
                            <DataTemplate>
                                <StackPanel>
                                    <Button Content="下载"></Button>
                                </StackPanel>
                            </DataTemplate>
                            
                        </DataGridTemplateColumn.CellTemplate>
                        
                    </DataGridTemplateColumn>
                </DataGrid.Columns>
            </DataGrid>
        </Grid>

    </Grid>
</Window>

后台代码

 public class SongDetail {
        public string ID { get; set; }
        public string SongName { get; set; }
        public string AlbumName { get; set; }
        public string SingerName { get; set; }
    }
 System.Threading.Thread th = new System.Threading.Thread(() =>
            {
                var rst = HttpHelper.HttpPost(url, data, HttpHelper.cookie, "application/x-www-form-urlencoded; charset=UTF-8");
                var root = JsonToEntity<Root>(rst);
                ObservableCollection<SongDetail> songItems = new ObservableCollection<SongDetail>();
                foreach (var song in root.song_list)
                {
                    string name = song.songname;
                    var arr = song.songname.Split(new string[] { "<sup" }, StringSplitOptions.None);
                    if (arr != null && arr.Length > 1) name = arr[0];
                    song.songname = name;
                    var singer = song.singer.FirstOrDefault();
                    songItems.Add(new SongDetail() {ID=song.songmid,SongName=name,AlbumName=song.albumname,SingerName=singer==null?"":singer.name });
                }
                dg_Table.Dispatcher.Invoke(delegate() {
                    dg_Table.ItemsSource = songItems;
                   // dg_Table.GridLinesVisibility = DataGridGridLinesVisibility.All;
                });
            });
            th.IsBackground = true;
            th.Start();

看图，我声明的列有值了，这个正常，但是出现属性的列是什么情况，百度了半天没找到原因。
代码大概就这些了，最近在学习WPF,可能在将来工作中用的上。望各位大神帮忙！

[gs0038]

看不懂你什么意思呢

[手在键盘敲很轻]

我要的只有5个列啊，其它多出来的是怎么回事呢

[ziqi0716]

AutoGenerateColumns="False"

[十八道胡同]

使用DataGrid的AutoGeneratingColumn事件，在生成列的时候过滤掉不需要的列 AutoGenerateColumns="True" AutoGeneratingColumn="gridWC_AutoGeneratingColumn"

private void gridWC_AutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e)
        {
            if (e.Column.Header.ToString()=="IsHasExpend"||
                e.Column.Header.ToString() == "FID"||
                e.Column.Header.ToString() == "ParientFID")
            {
                e.Cancel = true;//过滤列
            }
        }

[手在键盘敲很轻]

结帖，感谢楼上两位老哥