在WPF datagrid列中加载不同的数据模板

<Window x:Class="WpfApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="450" Width="800">
    <Window.Resources>
        <DataTemplate x:Key="StringTemplate">
            <TextBlock Text="{Binding}" Foreground="Blue"/>
        </DataTemplate>
        <DataTemplate x:Key="IntegerTemplate">
            <TextBlock Text="{Binding}" Foreground="Red"/>
        </DataTemplate>
    </Window.Resources>
    <Grid>
        <DataGrid x:Name="dataGrid" AutoGenerateColumns="False">
            <DataGrid.Columns>
                <DataGridTemplateColumn Header="Data">
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <ContentControl Content="{Binding}">
                                <ContentControl.Style>
                                    <Style TargetType="ContentControl">
                                        <Setter Property="ContentTemplate" Value="{StaticResource StringTemplate}"/>
                                        <Style.Triggers>
                                            <DataTrigger Binding="{Binding Path=., Converter={StaticResource TypeToTemplateConverter}}" Value="System.Int32">
                                                <Setter Property="ContentTemplate" Value="{StaticResource IntegerTemplate}"/>
                                            </DataTrigger>
                                        </Style.Triggers>
                                    </Style>
                                </ContentControl.Style>
                            </ContentControl>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
            </DataGrid.Columns>
        </DataGrid>
    </Grid>
</Window>

using System;
using System.Globalization;
using System.Windows.Data;
using System.Windows;

namespace WpfApp
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            dataGrid.ItemsSource = new object[] { "Hello", 123, "World", 456 };
        }
    }

    public class TypeToTemplateConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return value?.GetType().ToString();
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}