Question

我不知道是否可以使用非常冗长且冗长乏味的Switch / Case或IF布尔检查，我想知道是否可以寻求更好的方法来处理和处理命令。

E.G：

if(settings.getName == Command)
{
Speak("I am here");
}

if("Get News Feed" == Command)
{
MyRSSFeed RSSNewsFeed = new MyRSSFeed();
RSSNewsFeed.GetFeed();
}

if命令继续......以下是我的Switch语句的片段：

switch (Command)
        {
            #region <-- Get Time Command -->

            case "Time Please":
            case "Whats the Time":
            case "What Time is it":
                GetCurrentTime();
                break;

            #endregion <-- Get Time Command -->

            #region <-- Get Date Command -->

            case "Whats the Date":
            case "What Date is it":
            case "Whats the Date Today":
            case "What is the Date Today":
                GetCurrentDate();
                break;

            #endregion <-- Get Date Command -->


            #region <-- Media Player Commands -->

            case "Play Bamboo Forest":

                Data.MusicPlayer.Play(@"\Bamboo Forest Play List.wpl");

                break;

            case "Next Song":

                Data.MusicPlayer.Next();

                break;

            case "Previous Song":

                Data.MusicPlayer.Previous();

                break;

            case "Stop Music":

                Data.MusicPlayer.Stop();

                break;

            case "Pause Music":

                Data.MusicPlayer.Pause();

                break;

            case "Resume Music":

                Data.MusicPlayer.Resume();

                break;


            case "Mute Music":

                Data.MusicPlayer.Mute();

                break;

            case "Volume Up":

                Data.MusicPlayer.VolumeUp();

                break;

            case "Volume Down":

                Data.MusicPlayer.VolumeDown();

                break;

            #endregion <-- Media Player Commands -->

            #region <-- Voice Recognition Control Commands -->

            case "Stop Listening":
                Audio.Listen.NewCommandRecognitionEngine.RecognizeAsyncCancel();
                Audio.Voice.Speak("Ok");
                Audio.Listen.Initialise(main);
                break;

            #endregion <-- Voice Recognition Control Commands -->

            #region <-- Application Commands -->

            case "Quiet":
                Audio.Voice.Stop();
                break;

            case "Download":
                Audio.Voice.Speak("Opening Download Window.");
                main.dlInterface.ShowBitsJobs();
                break;

            case "Settings":
                Audio.Voice.Speak("Opening Settings Window.");
                main.settings.Show();
                break;

            case "Close":
                if (main.dlInterface.Visable == true)
                {
                    main.dlInterface.Hide();
                    Audio.Voice.Speak("Closing Download Window.");
                }
                if (main.settings.Visible == true)
                {
                    main.settings.Hide();
                    Audio.Voice.Speak("Closing Settings Window.");
                }
                break;

            case "Out of the way":
                if (main.WindowState == System.Windows.Forms.FormWindowState.Normal)
                {
                    main.WindowState = System.Windows.Forms.FormWindowState.Minimized;
                    Audio.Voice.Speak("My apologies");
                }
                break;

            case "Where Are You":
                if (main.WindowState == System.Windows.Forms.FormWindowState.Minimized)
                {
                    main.WindowState = System.Windows.Forms.FormWindowState.Normal;
                    Audio.Voice.Speak("Here");
                }
                break;


            default:
                // Do Nothing here...
                break;
        }

我有一个包含命令的SQL数据库。我根据需要将命令加载到其中。它有一个Command Name Colum和一个Value Colum。我可以根据需要更改这些以添加更改或删除列。

目前，一旦识别出命令，我就会使用IF语句和Switch / Case Catch的组合来捕获已识别的命令。

我已经考虑过以某种方式将dll放入一个文件夹以及一些如何在app加载时进行扫描。如果我添加一个Command然后以某种方式使用值字段来操作dll中的命令。

我意识到这是一个相当复杂的情况，但我觉得可以找到一个更好的解决方案，使这个过程更加简单。

编辑：我已经看过这个：http://social.msdn.microsoft.com/Forums/en-US/4f962dc0-aec2-4191-9fe2-e1dfeb1da5dd/voice-command-api

请询问您是否需要更多信息。

[编辑] Paqogomez已回答了这个问题。请参阅下面的工作示例：

using System;
using System.Linq;
using MyApp.AppCommands;
using System.Reflection;
using System.Collections.Generic;

namespace MyApp
{
class Program
{
static void Main(string[] args)
{
MethodInfo myMethod;

var methods = new Commands();

myMethod = CommandFactory.GetCommandMethods("Time Please");
myMethod.Invoke(methods, null);

myMethod = CommandFactory.GetCommandMethods("Volume Down");
myMethod.Invoke(methods, null);

myMethod = CommandFactory.GetCommandMethods("Volume Up");
myMethod.Invoke(methods, null);

Console.ReadLine();
}
}

public static class CommandFactory
{
private static Dictionary<string, MethodInfo> commandMethods = new Dictionary<string, MethodInfo>();

public static MethodInfo GetCommandMethods(string Command)
{
MethodInfo methodInfo;

var myCommandMethods = new Commands();

if (commandMethods.Count == 0)
{
var methodNames = typeof(Commands).GetMethods(BindingFlags.Public | BindingFlags.DeclaredOnly | BindingFlags.Instance);

var speechAttributeMethods = methodNames.Where(y => y.GetCustomAttributes().OfType<CommandAttribute>().Any());

foreach (var speechAttributeMethod in speechAttributeMethods)
{
foreach (var attribute in speechAttributeMethod.GetCustomAttributes(true))
{
commandMethods.Add(((CommandAttribute)attribute).CommandValue, speechAttributeMethod);
}
}
methodInfo = commandMethods[Command];
}
else
{
methodInfo = commandMethods[Command];
}

return methodInfo;
}
}
}

namespace MyApp.AppCommands
{
public class Commands
{
[Command("Time Please")]
[Command("Whats the Time")]
[Command("What Time is it")]
public void GetTime()
{
Console.WriteLine(DateTime.Now.ToLocalTime());
}

[Command("Volume Down")]
public void VolumeDown()
{
Console.WriteLine("Volume Down 1");
}

[Command("Volume Up")]
public void VolumeUp()
{
Console.WriteLine("Volume Up 1");
}
}

[System.AttributeUsage(System.AttributeTargets.Method, AllowMultiple = true)]
public class CommandAttribute : System.Attribute
{
public string CommandValue { get; set; }

public CommandAttribute(string textValue)
{
this.CommandValue = textValue;
}
}
}

美丽的工作Paqogomez，谢谢分享！这很快很优雅！

就我而言，我需要调用的代码是：

private static void CommandRecognized(object sender, SpeechRecognizedEventArgs e)
{
MethodInfo myMethod;

var methods = new Commands();

myMethod = CommandFactory.GetCommandMethods(e.Result.Text);
myMethod.Invoke(methods, null);
}

是语音识别引擎的事件处理程序：

CommandRecognitionEngine.SpeechRecognized += new EventHandler<SpeechRecognizedEventArgs>(CommandRecognized);

Answer 1

您正在寻找定义为here的战略模式。

这将允许您非常轻松地处理多个if语句。

工厂模式也可能适合您。工厂可以使用反射来确定要创建的命令。

您也可以将所有命令转储到字典中。

编辑：

鉴于最后一点代码示例，工厂就是您所需要的。我把它放在一起。

工厂只是反映MySpeechMethods中的所有方法，查找SpeechAttributes的方法，然后发送回MethodInfo进行调用。如果你需要从你的方法返回值，你可以设置所有方法返回相同的类型（如字符串）或查看泛型，但我会留给你。：）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using MyApp.SpeechMethods;

namespace MyApp
{
    class Program
    {
        static void Main(string[] args)
        {
            var methods = new MySpeechMethods();
            MethodInfo myMethod;
            myMethod = SpeechFactory.GetSpeechMethod("Time Please");
            myMethod.Invoke(methods, null);
            myMethod = SpeechFactory.GetSpeechMethod("Volume Down");
            myMethod.Invoke(methods, null);
            myMethod = SpeechFactory.GetSpeechMethod("Volume Up");
            myMethod.Invoke(methods, null);
        }
    }

    public static class SpeechFactory
    {
        private static Dictionary<string, MethodInfo> speechMethods = new Dictionary<string, MethodInfo>();
        public static MethodInfo GetSpeechMethod(string speechText)
        {
            MethodInfo methodInfo;
            var mySpeechMethods = new MySpeechMethods();
            if (speechMethods.Count == 0)
            {
                var methodNames =
                    typeof (MySpeechMethods).GetMethods(BindingFlags.Public | BindingFlags.DeclaredOnly | BindingFlags.Instance);
                var speechAttributeMethods = methodNames.Where(y => y.GetCustomAttributes().OfType<SpeechAttribute>().Any());
                foreach (var speechAttributeMethod in speechAttributeMethods)
                {
                    foreach (var attribute in speechAttributeMethod.GetCustomAttributes(true))
                    {
                        speechMethods.Add(((SpeechAttribute)attribute).SpeechValue, speechAttributeMethod);
                    }
                }
                methodInfo = speechMethods[speechText];
            }
            else
            {
                methodInfo = speechMethods[speechText];
            }

            return methodInfo;
        }
    }
}

namespace MyApp.SpeechMethods
{
    public class MySpeechMethods
    {
        [Speech("Time Please")]
        [Speech("Whats the Time")]
        [Speech("What Time is it")]
        public void GetTime()
        {
            Console.WriteLine(DateTime.Now.ToLocalTime());
        }

        [Speech("Volume Down")]
        public void VolumeDown()
        {
            Console.WriteLine("Volume Down 1");
        }

        [Speech("Volume Up")]
        public void VolumeUp()
        {
            Console.WriteLine("Volume Up 1");
        }
    }

    [System.AttributeUsage(System.AttributeTargets.Method, AllowMultiple = true)]
    public class SpeechAttribute : System.Attribute
    {
        public string SpeechValue { get; set; }

        public SpeechAttribute(string textValue)
        {
            this.SpeechValue = textValue;
        }
    }
}

智能方式处理代码中的语音命令以执行命令

1 个答案: