WPF中的自动生成代码显示错误。(c#， WPF, Visual Studio Community 2013)

Recently i have started playing with C# in Visual Studio 2013 Community. I was creating a simple data binding while i encountered following error. What i was doing i was using drag-n-drop fr om my database to main window. Visual studio generated required XAML and .cs file. There was following error present with the code. I searched a lot and didn't found a solution. It was showing on

最近我开始在Visual Studio 2013社区使用c#。当我遇到以下错误时，我正在创建一个简单的数据绑定。我所做的就是将数据库拖拽到主窗口。Visual studio生成所需的XAML和.cs文件。代码中出现了以下错误。我搜索了很多，没有找到解决办法。这是显示在

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

错误:“访问非静态字段方法或属性需要对象引用”

following is my XAML.

下面是我的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>

and following is auto generated code by ide in C#.

下面是c#中的ide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();
        }
    }
}

The error is shown here

错误显示在这里

rDataSetDateTableAdapter.Fill(rDataSet.Date);

and here:

在这里:

rDataSetDeliveryTableAdapter.Fill(rDataSet.Delivery);

it is showing red line under

它在下面显示红线

(rDataSet.Date)

and

和

(rDataSet.Delivery)

Your help is appreciated.

我是感激你的帮助。

Thank you for reading till the last line.

谢谢你读完最后一行。

1 个解决方案

#1

Never tried it with data set, but it simple means that it can not create an instance of rDataSet which is in this namespace - rrplproj we would need a little info abt rDataSet in order to understand it further .. also read about creating dataset instances in xaml..

从来没有使用数据集尝试过，但它简单地意味着它不能创建rDataSet的实例，它位于这个名称空间——rrplproj中，我们需要一些关于abt rDataSet的信息，以便进一步理解它。还可以阅读关于在xaml中创建数据集实例的文章。

or else in the constructor of your code behind write this ...

或者在你代码的构造函数后面写这个…

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

and remove this from your xaml

把这个从xaml中删除

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

this would add a resource to rDataSet

这将为rDataSet添加一个资源。

#1