通过在 WPF 中添加多个设计实例来避免智能感知错误

我正在使用 MVVM 和一些代码，我面临以下 IntelliSense 错误：

在“MainWindow”类型中找不到属性“Date”。

如果我清理，构建/重建，错误会很快消失。一旦我开始编辑它的 XAML 内容，它就会再次出现。解决此问题的一种方法是将我的错误列表设置为内置而不是内置 + 智能感知。

这是我所拥有的：

<Controls:MetroWindow
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:wpfTool="clr-namespace:Xceed.Wpf.Toolkit;assembly=Xceed.Wpf.Toolkit"
        xmlns:Controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
        xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        mc:Ignorable="d"
        xmlns:local="clr-namespace:T_Tacoma"
        xmlns:sys="clr-namespace:System;assembly=mscorlib"
        xmlns:ViewModel="clr-namespace:T_Tacoma.ViewModel" 
        x:Name="Tacoma" 
        x:Class="Tacoma.MainWindow"
        d:DesignHeight="300" 
        d:DataContext="{d:DesignInstance {x:Type local:MainWindow}}" ***<!-- or replace with d:DataContext="{d:DesignInstance ViewModel:TacomaViewModel, IsDesignTimeCreatable=False}"  -->         
        Title="" 
        Height="857" Width="1484.582" 
        WindowState="Maximized"
        SizeToContent="Manual"
        WindowStartupLocation="CenterScreen"
        TitleCaps ="False">
    <Grid>
        <DatePicker x:Name="vDatePick" HorizontalAlignment="Right" SelectedDate="{Binding MDate, Mode=TwoWay}"/>
        <TabControl SelectedIndex="{Binding SelectedTabIndex, Mode=TwoWay}" VerticalContentAlignment="Stretch">
           <DataGrid
             AutoGenerateColumns="False" 
             VirtualizingPanel.IsVirtualizingWhenGrouping="True" 
             ColumnHeaderStyle="{StaticResource lowCase}" 
             x:Name="dtGrid" ItemsSource="{Binding}" 
             HorizontalContentAlignment="Stretch">
              <DataGrid.Columns>
                  <DataGridTextColumn Binding="{Binding Location}" Header="Location" Visibility="Collapsed"/>
                  <DataGridTextColumn Binding="{Binding Date, StringFormat=MM-dd-yy}" Header="Date"/>
                  <DataGridTextColumn Binding="{Binding RegularHours}" Header="Regular Hours"/>
                  <DataGridTextColumn Binding="{Binding OvertimeHours}" Header="Overtime Hours"/>
              </DataGrid.Columns>
           </DataGrid>
        </TabControl>
    </Grid>  
</Controls:MetroWindow>

代码隐藏：

using System;
using System.ComponentModel;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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 MySql.Data.MySqlClient;
using MySql.Data;
using MahApps.Metro.Controls;
using BespokeFusion;
using Tacoma.ViewModel;

namespace T_Tacoma
{
    public partial class MainWindow : MetroWindow
    {
        public MainWindow()
        {
            InitializeComponent();

            DataContext = new TacomaViewModel();

            string connectionString = "datasource=;port=;username=;password=";
            string sMonth = DateTime.Now.ToString("MM");
            string sYear = DateTime.Now.ToString("yyyy");

            MySqlConnection connection = new MySqlConnection(connectionString);

            MySqlCommand cmd = new MySqlCommand("Select ID, Location, Date, Name, RegularHours, OvertimeHours from Stats.Tacoma where MONTH(Date) = @sMonth AND YEAR(Date) = @sYear", connection);

            try
            {
            connection.Open();
                cmd.Parameters.Add(new MySqlParameter("sMonth", sMonth));
                cmd.Parameters.Add(new MySqlParameter("sYear", sYear));

                DataTable dt = new DataTable();
                dt.Load(cmd.ExecuteReader());
                dtGrid.DataContext = dt;
            }

            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }     
            connection.Close();
        }

视图模型：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using T_Tacoma.Model;
using LiveCharts;
using LiveCharts.Wpf;
using System.Windows;
using Xceed.Wpf;
using T_Tacoma;

namespace Tacoma.ViewModel
{
    public class TacomaViewModel : INotifyPropertyChanged
    {
         public TacomaViewModel()
        {
          Set...();
        }

        private int _selectedTabIndex;
        public int SelectedTabIndex
        {
            get { return _selectedTabIndex; }
            set
            {
                    _selectedTabIndex = value;
                    OnPropertyChanged("SelectedTabIndex");
            }
        }

        public DateTime mDate = DateTime.Now;
        public DateTime MDate
        { 
            get { return mDate; }
            set
            {
                if (value == mDate)
                {
                    return;
                }
                else if (_selectedTabIndex == 0)
                {
                    mDate = value;
                }
                else
                {
                    mDate = value;
                    OnPropertyChanged("MDate");

                    Task.Run(() =>
                   {
                      Set...();
                   });  
                }
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;

        protected virtual void OnPropertyChanged(string propertyName = null)
        {
            try
            {
                if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            } 
        }
    }
}

如果我离开d:DataContext="{d:DesignInstance {x:Type local:MainWindow}}"，我的 ViewModel 属性会出现错误（MDate，SelectedTabIndex）。如果将其替换为d:DataContext="{d:DesignInstance ViewModel:TacomaViewModel, IsDesignTimeCreatable=False}"I 仅在数据网格中绑定的列上得到错误 ( Location, Date, RegularHours, OvertimeHours)

这是我尝试过的，希望它能起作用，但它没有：

<DataGrid d:DataContext="{d:DesignInstance {x:Type local:MainWindow}}"
   AutoGenerateColumns="False" 
   VirtualizingPanel.IsVirtualizingWhenGrouping="True" 
   ColumnHeaderStyle="{StaticResource lowCase}" 
   x:Name="dtGrid" ItemsSource="{Binding}" 
   HorizontalContentAlignment="Stretch">
      <DataGrid.Columns>
          <DataGridTextColumn Binding="{Binding Location}" Header="Location" Visibility="Collapsed"/>
          <DataGridTextColumn Binding="{Binding Date, StringFormat=MM-dd-yy}" Header="Date"/>
          <DataGridTextColumn Binding="{Binding RegularHours}" Header="Regular Hours"/>
          <DataGridTextColumn Binding="{Binding OvertimeHours}" Header="Overtime Hours"/>
      </DataGrid.Columns>
</DataGrid>
<DatePicker d:DataContext="{d:DesignInstance Type=ViewModel:TacomaViewModel}" 
            x:Name="vDatePick" SelectedDate="{Binding MDate, Mode=TwoWay}"/>
<TabControl d:DataContext="{d:DesignInstance Type=ViewModel:TacomaViewModel} 
            SelectedIndex="{Binding SelectedTabIndex, Mode=TwoWay}" VerticalContentAlignment="Stretch">
</TabControl>

我怎样才能解决这个问题，而不必将所有内容从我的代码隐藏移动到 ViewModel？我知道我可能没有使用最佳实践，但有没有简单的方法来解决这个问题？