任何Visual Studio程序都不让我编码

本文关键字：编码 Visual Studio 程序 任何 | 更新日期: 2023-09-27 18:35:43

这是最近开始发生的，每次我使用一段代码都算作错误。

例如：

假设我想做一个插座

public class PacketReader
{
Socket MainSocket;
MainSocket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);                               // acts like MainSocket was never declared
    // Bind the socket to the selected IP address
    MainSocket.Bind(newIPEndPoint(IPAddress.Parse(cmbInterfaces.Text),0));
    // Set the socket options
    MainSocket.SetSocketOption(SocketOptionLevel.IP,  //Applies only to IP packets
                       SocketOptionName.HeaderIncluded, //Set the include header
                       true);                           //option to true
    byte[] byTrue = newbyte[4]{1, 0, 0, 0};
    byte[] byOut = newbyte[4];
    //Socket.IOControl is analogous to the WSAIoctl method of Winsock 2
    MainSocket.IOControl(IOControlCode.ReceiveAll,  //SIO_RCVALL of Winsock
                 byTrue, byOut);
    //Start receiving the packets asynchronously
    MainSocket.BeginReceive(byteData, 0, byteData.Length, SocketFlags.None,
                    newAsyncCallback(OnReceive), null);
}

然后，当我尝试在函数或类的某些部分中使用它时，它返回为"名称是一个字段，但它用作类型"。我不知道当我所做的只是在类中声明它时，我是如何将其用作类型的。

所以我的问题是，我如何防止这种情况发生。我需要快速找到解决方案，否则由于这个愚蠢的问题，我将在一个月内失败一个项目。

任何Visual Studio程序都不让我编码

您的代码不在方法中。

不能声明变量并在类范围内单独分配它。您也不能将随机表达式放在类范围内。将您的代码更改为以下内容：

public class PacketReader
{
    Socket MainSocket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
    public PacketReader() {
        // rest of the code here in your constructor
    }
}

这听起来很卑鄙......但如果你不知道像这样的基本语言结构规则......那么数据包监视器可能只是遥不可及的。

您必须将代码放入一个运行它的方法中！只能在方法范围之外声明变量。需要运行的任何语句都必须位于方法中。不是想粗鲁，但我建议你在尝试这样的事情之前多学一点。有关详细信息，请查看此方法教程。

public class PacketReader
{
    Socket MainSocket;
    public static void Main()
    {
        MainSocket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);                               // acts like MainSocket was never declared
        // Bind the socket to the selected IP address
        MainSocket.Bind(newIPEndPoint(IPAddress.Parse(cmbInterfaces.Text),0));
        // Set the socket options
        MainSocket.SetSocketOption(SocketOptionLevel.IP,  //Applies only to IP packets
                           SocketOptionName.HeaderIncluded, //Set the include header
                           true);                           //option to true
        byte[] byTrue = newbyte[4]{1, 0, 0, 0};
        byte[] byOut = newbyte[4];
        //Socket.IOControl is analogous to the WSAIoctl method of Winsock 2
        MainSocket.IOControl(IOControlCode.ReceiveAll,  //SIO_RCVALL of Winsock
                     byTrue, byOut);
        //Start receiving the packets asynchronously
        MainSocket.BeginReceive(byteData, 0, byteData.Length, SocketFlags.None,
                    newAsyncCallback(OnReceive), null);
    }
}

如果你正在做这样的事情：

Public class YourClass
{
   Socket MainSocket;
   MainSocket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
   //other members and methods and so on...
}

例如，这样做...

Public class YourClass
{
   Socket MainSocket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
   //other members and methods and so on...
}

然后，如果您想要其余的，您可以（取决于您的设计和目标）将其放置在构造函数或方法中......

相关文章：