WPF 中自动生成的代码显示错误。 (C#、WPF、Visual Studio 社区 2013)

Auto-generated code in WPF shows error. (C#, WPF, Visual Studio Community 2013)

最近我开始在 Visual Studio 2013 社区中使用 C#。当我遇到以下错误时,我正在创建一个简单的数据绑定。我正在做的是使用拖放从我的数据库到主 window。 Visual studio 生成了所需的 XAML 和 .cs 文件。代码存在以下错误。我搜索了很多,但没有找到解决方案。它显示在

错误:"an object reference is required to access non-static field method or property"

以下是我的XAML。

 <Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:rrplproj" x:Class="rrplproj.MainWindow"
        Title="MainWindow" Height="700" Width="1024" WindowState="Maximized" Loaded="Window_Loaded">
    <Window.Resources>
        <local:rDataSet x:Key="rDataSet"/>
        <CollectionViewSource x:Key="dateViewSource" Source="{Binding Date, Source={StaticResource rDataSet}}"/>
        <CollectionViewSource x:Key="deliveryViewSource" Source="{Binding Delivery, 
Source={StaticResource rDataSet}}"/>

    </Window.Resources>

    <Grid Background="#FFDBFDF8">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="165*"/>
            <ColumnDefinition Width="172*"/>
            <ColumnDefinition Width="171*"/>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="56*"/>
            <RowDefinition Height="149*"/>
            <RowDefinition Height="18*"/>
        </Grid.RowDefinitions>
        <Grid x:Name="grid1" DataContext="{StaticResource dateViewSource}" HorizontalAlignment="Left" 
Margin="19,23,0,0" Grid.Row="1" VerticalAlignment="Top" Height="32" Width="151">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="Auto"/>
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>
            <Label Content="Date:" Grid.Column="0" HorizontalAlignment="Left" Margin="3" Grid.Row="0" 
VerticalAlignment="Center"/>
            <DatePicker x:Name="dateDatePicker" Grid.Column="1" HorizontalAlignment="Left" Margin="3" Grid.Row="0" 
SelectedDate="{Binding Date, Mode=TwoWay, NotifyOnValidationError=true, ValidatesOnExceptions=true}" 
VerticalAlignment="Center"/>
        </Grid>
        <Grid x:Name="grid2" Grid.Column="1" DataContext="{StaticResource deliveryViewSource}" 
HorizontalAlignment="Left" Margin="64,18,0,0" Grid.Row="1" VerticalAlignment="Top">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="Auto"/>
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>
            <Label Content="Truck No:" Grid.Column="0" HorizontalAlignment="Left" Margin="3" Grid.Row="0" 
VerticalAlignment="Center"/>
            <TextBox x:Name="truckNoTextBox" Grid.Column="1" HorizontalAlignment="Left" Height="23" Margin="3" 
Grid.Row="0" Text="{Binding TruckNo, Mode=TwoWay, NotifyOnValidationError=true, ValidatesOnExceptions=true}" 
VerticalAlignment="Center" Width="120"/>
        </Grid>
    </Grid>

以下是 ide 在 C# 中自动生成的代码。

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;

namespace rrplproj
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {

            // Load data into the table Date. You can modify this code as needed.
            rrplproj.rDataSetTableAdapters.DateTableAdapter rDataSetDateTableAdapter = 
        new rrplproj.rDataSetTableAdapters.DateTableAdapter();
            rDataSetDateTableAdapter.Fill(rDataSet.Date);
            System.Windows.Data.CollectionViewSource dateViewSource = 
            ((System.Windows.Data.CollectionViewSource)(this.FindResource("dateViewSource")));
            dateViewSource.View.MoveCurrentToFirst();
            // Load data into the table Delivery. You can modify this code as needed.
            rrplproj.rDataSetTableAdapters.DeliveryTableAdapter rDataSetDeliveryTableAdapter = 
            new rrplproj.rDataSetTableAdapters.DeliveryTableAdapter();
            rDataSetDeliveryTableAdapter.Fill(rDataSet.Delivery);
            System.Windows.Data.CollectionViewSource deliveryViewSource = 
            ((System.Windows.Data.CollectionViewSource)(this.FindResource("deliveryViewSource")));
            deliveryViewSource.View.MoveCurrentToFirst();
        }
    }
}

此处显示错误

rDataSetDateTableAdapter.Fill(rDataSet.Date);

这里:

rDataSetDeliveryTableAdapter.Fill(rDataSet.Delivery);

下方显示红线
(rDataSet.Date)

(rDataSet.Delivery)

感谢您的帮助。

感谢您阅读到最后一行。

从未尝试过使用数据集,但这很简单意味着它无法创建此命名空间中的 rDataSet 实例 - rrplproj 我们需要一些关于 rDataSet 的信息才能进一步理解它..另请阅读关于在 xaml..

中创建数据集实例

或者在你后面代码的构造函数中写这个...

myObj = new rDataSet();
this.Resources.Add("rDataSet", myObj);

并将其从您的 xaml

中删除
<local:rDataSet x:Key="rDataSet"/>

这会向 rDataSet 添加资源