写代码有问题..... [英] there is problem to write code .....

问题描述

我添加了dbml文件





&在.xmal文件中编写代码

命名空间WpfApplication1

{

私有静态DataClasses1DataContext _dataDC = new DataClasses1DataContext（）;

///< summary>

/ // MainWindow.xaml的交互逻辑

///< / summary>

public partial class MainWindow：Window

{

public MainWindow（）

{

InitializeComponent（）;

}

}

}



但以下语句有错误：

private static DataClasses1DataContext _dataDC = new DataClasses1DataContext（）;

I added dbml file


& in wrote code in .xmal file
namespace WpfApplication1
{
private static DataClasses1DataContext _dataDC = new DataClasses1DataContext();
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
}
}

but there is error for following statement:
private static DataClasses1DataContext _dataDC = new DataClasses1DataContext();

推荐答案

你不能在C＃中创建一个类外的变量（WPF与否） - C＃该语言没有任何全局变量概念，一切都必须在类定义，甚至是静态项。

尝试移动它：

You cannot create variables outside a class in C# (WPF or not) - C# the language does not have any concept of "global variables" and everything must be within a class definition, even static items.
Try moving it:

namespace WpfApplication1
    {
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
        {
        private static DataClasses1DataContext _dataDC = new DataClasses1DataContext();
        public MainWindow()
            {
            InitializeComponent();
            }
        }
    }

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