wpf的datagrid綁定數據

界面：
<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="主窗口" Height="322" Width="528" Icon="/WpfApplication1;component/Images/app1_13.ico" Loaded="Window_Loaded">
    <Grid>
        <DataGrid AutoGenerateColumns="False" Margin="38,28,41,24" Name="dataGrid1" HorizontalGridLinesBrush="#41000000" VerticalGridLinesBrush="#33000000">
            <DataGrid.Columns>
                <DataGridTextColumn Binding="{Binding Path=apptext}" Header="名稱" />
                <DataGridTextColumn Header="網址" Binding="{Binding Path=appurl}" />
                <DataGridTextColumn Header="應用類型" Binding="{Binding Path=apptype}" />
                <DataGridTextColumn Header="顯示類型" Binding="{Binding Path=urlform}" />
            </DataGrid.Columns>
        </DataGrid>
    </Grid>
</Window>

代碼：
 using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
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 System.Data;
using Model;
namespace WpfApplication1
{
    /// <summary>
    /// MainWindow.xaml 的交互邏輯
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            DataTable dt = dbhelper.GetDataTable("select * from appmenu");
            List<AppMenuModel> mlist = ModelConvertHelper<AppMenuModel>.ToList(dt);
            //dataGrid1.ItemsSource = mlist; //綁定list
            dataGrid1.ItemsSource = dt.DefaultView; //綁定datatable
        }

    }
}