在C#中解析命令行参数的最佳方法?

构建接受参数的控制台应用程序时,可以使用传递给Main(string[] args)

在过去,我只是索引/循环该数组,并完成了一些正则表达式来提取值。 但是,当命令变得更复杂时,解析会变得非常难看。

所以我很感兴趣:

  • 您使用的库
  • 你使用的模式
  • 假设这些命令总是遵循通用标准,如在这里回答。


    我强烈建议使用NDesk.Options(Documentation)和/或Mono.Options(相同的API,不同的名称空间)。 文档中的一个例子:

    bool show_help = false;
    List<string> names = new List<string> ();
    int repeat = 1;
    
    var p = new OptionSet () {
        { "n|name=", "the {NAME} of someone to greet.",
           v => names.Add (v) },
        { "r|repeat=", 
           "the number of {TIMES} to repeat the greeting.n" + 
              "this must be an integer.",
            (int v) => repeat = v },
        { "v", "increase debug message verbosity",
           v => { if (v != null) ++verbosity; } },
        { "h|help",  "show this message and exit", 
           v => show_help = v != null },
    };
    
    List<string> extra;
    try {
        extra = p.Parse (args);
    }
    catch (OptionException e) {
        Console.Write ("greet: ");
        Console.WriteLine (e.Message);
        Console.WriteLine ("Try `greet --help' for more information.");
        return;
    }
    

    我非常喜欢Command Line Parser Library(http://commandline.codeplex.com/)。 它具有通过属性设置参数的非常简单和优雅的方式:

    class Options
    {
        [Option("i", "input", Required = true, HelpText = "Input file to read.")]
        public string InputFile { get; set; }
    
        [Option(null, "length", HelpText = "The maximum number of bytes to process.")]
        public int MaximumLenght { get; set; }
    
        [Option("v", null, HelpText = "Print details during execution.")]
        public bool Verbose { get; set; }
    
        [HelpOption(HelpText = "Display this help screen.")]
        public string GetUsage()
        {
            var usage = new StringBuilder();
            usage.AppendLine("Quickstart Application 1.0");
            usage.AppendLine("Read user manual for usage instructions...");
            return usage.ToString();
        }
    }
    

    WPF TestApi库为C#开发提供了最好的命令行解析器之一。 我强烈建议从Ivo Manolov关于API的博客上进行研究:

    // EXAMPLE #2:
    // Sample for parsing the following command-line:
    // Test.exe /verbose /runId=10
    // This sample declares a class in which the strongly-
    // typed arguments are populated
    public class CommandLineArguments
    {
       bool? Verbose { get; set; }
       int? RunId { get; set; }
    }
    
    CommandLineArguments a = new CommandLineArguments();
    CommandLineParser.ParseArguments(args, a);
    
    链接地址: http://www.djcxy.com/p/5149.html

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