如何从外部字符串文件创建数组

如何在语音识别程序中添加添加数组看下面的代码？ 我尝试使用streamRead读取一个字符串并创建一个数组并放在后面.Add commands.Add(new String[] ，请参阅下面的代码，但无法实现。

 using System; using System.Collections.Generic; using System.Threading.Tasks; using System.Speech.Recognition; using System.Speech.Synthesis; using System.Collections.Generic; using System.Data; using System.Text; using System.Globalization; using System.IO; //Speech to Text amespace CSharp_Speech_ConsoleApp { class Program { [DllImport("winmm.dll")] public static extern int waveInGetNumDevs(); SpeechRecognitionEngine recognizer = new SpeechRecognitionEngine(new System.Globalization.CultureInfo("en-US")); static void Main(string[] args) { // Make a Keywords array Choices commands = new Choices(); //How to make this array by importing strings from a file ? commands.Add(new String[] { "Good morning.","Hello Mike.", "Good morning Eddy.","Good afternoon.","Good Evening","Hello", "How are you", "Listen to me Mike", "Stop listening Mike!" }); GrammarBuilder gBuilder = new GrammarBuilder(); gBuilder.Append(commands); Grammar grammar = new Grammar(gBuilder); recogEngine.LoadGrammar(grammar); //get total number of sound input devices int waveInDevicesCount = waveInGetNumDevs(); if(waveInDevicesCount == 0) { Console.WriteLine("No microphone detected.!"); } else { Console.WriteLine("Microphone detected. "); recogEngine.SetInputToDefaultAudioDevice(); recogEngine.SpeechRecognized += recogEngine_SpeechRecognized; recogEngine.RecognizeAsync(RecognizeMode.Multiple); } Console.ReadLine(); } // Console Display Speech Recognized result Text static void recogEngine_SpeechRecognized(object sender, SpeechRecognizedEventArgs e) { string managedString = e.Result.Text; char[] st = managedString.ToCharArray(); Console.WriteLine(st); } } } 

Answer 1

如何通过从文件导入字符串来创建数组？

这将为您提供文件中的所有行：

 var lines = File.ReadAllLines(@"PathToYourFile"); 

以上内容将文件中的所有行读入内存。 还有另一种方法可以在需要时逐个读取这些行：

 var lines = File.ReadLines(@"PathToYourFile"); 

这个返回IEnumerable 。 例如，假设您的文件有1000行， ReadAllLines会将所有1000行读入内存。 但ReadLines会根据您的需要ReadLines读取它们。 因此，如果你这样做：

 var lines = File.ReadLines(@"PathToYourFile"); var line1 = lines.First(); var lastLine = lines.Last(); 

即使文件有1000行，它也只会将第一行和最后一行读入内存。

那么何时使用ReadLines方法？

假设您需要读取一个包含1000行的文件，并且您感兴趣的唯一行是900到920，那么您可以这样做：

 var lines = File.ReadLines(@"PathToYourFile"); var line900To920 = lines.Skip(899).Take(21);