切换案例或if [英] switch case or by if

问题描述

我有一个字符数组数组。

char [] ReadBuffers = new char [10];



i将获得commads但序列号port为字符串。



string HDR_CMD =0x00010001

string DBCMD =0x00020002

string DBBdta_CMD =0x00030003

string ADDR_TBL_CMD =0x00040004

string RESEND_CMD =0x00050005



i want放置条件。



i将通过串口获取命令，只有该命令应通过char缓冲区读取。

然后通过串口写入。



我们怎么办呢。



请帮帮我。

i have an char array array.
char[] ReadBuffers = new char[10];

i will get commads though serial port as a string.

string HDR_CMD = "0x00010001"
string DBCMD = "0x00020002"
string DBBdta_CMD = "0x00030003"
string ADDR_TBL_CMD = "0x00040004"
string RESEND_CMD = "0x00050005"

i want to put conditions.

i will get command through serial port only that command should read through char buffer.
and then write through serial port.

how can we do this.

please help me.

推荐答案

您可以使用任何一种非控制流结构方法。这取决于您的解决方案。例如，当命令出现时你将要做什么，将添加命令等等。我在下面提出的建议可能是不必要的 - 只是过度工程。



这是我头脑中的问题，但它会给你一个想法。您不必使用ICommand（它可以包括Action< t>或Func< t>）。

You can use either, or a non-control flow structure approach. It depends on your solution. For example, what are you going to do when the command comes, will commands ever be added, etc. What I am proposing below may be unnecessary -- just over-engineering.

This is something off the top of my head, but it'll give you an idea. You don't have to use an ICommand (it can be anything including an Action<t> or Func<t>).

static class CommandRepository {
   Dictionary<string, ICommand> commands;

   static CommandRepository() {
      commands = new Dictionary<string, ICommand>(5);
      commands.Add("0x00010001", new ...);
      commands.Add("0x00020002", new ...);
      ...
   }

   public static ICommand GetCommand(string cmdStr) {
      if (commands.ContainsKey(cmdStr))
         return commands[cmdStr];
      else
         return null;
   }
}

然后你会在你的代码中使用这个类。

You would then use this class in your code.

void ExecuteCommand(string cmdStr) {
   var cmd = CommandRepository.GetCommand(cmdStr);

   if (cmd != null)
      cmd.Execute();
   else
      throw new Exception(); // do something when invalid cmdStr
}

如果你计划大量或动态地添加命令，你可以更进一步。通过使用像Unity这样的IoC容器。您可以对此进行自己的研究，但是您可以通过配置文件注册具有不同注册名称的多个命令，并使用它来解析对象而不是使用字典。

You can take this further if you plan on adding commands a lot or perhaps dynamically. By using an IoC container like Unity. You can do your own research on that, but you could through a configuration file register multiple commands with different registration names and use that to resolve the objects instead of using a Dictionary.

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