運算符+ =不能應用

Question

我正在創建一個C＃WinForms應用程序，它應該使用語音命令「exit」關閉應用程序。

但是它給了我一個例外：

運營商+ = cannnot應用於系統言語或主要方法

的操作數在此代碼：

public partial class Form1 : Form 
{ 
    SpeechRecognitionEngine sRecongize = new SpeechRecognitionEngine(); 

    private void Form1_Load(object sender, EventArgs e) 
    { 
     // Compiler error here: 
     sRecongize += sRecongize_SpeechRecognized; 
    } 

    private void sRecongize_SpeechRecognized(object sender, SpeechRecognizedEventArgs e) 
    { 
     if (e.Result.Text == "exit") 
     { 
      Application.Exit(); 
     } 
    } 
} 

哪有我訂閱一個活動？

Answer 1

您需要訂閱特定的事件，在這種情況下SpeechRecognized，而不是整個類：

sRecongize.SpeechRecognized += sRecongize_SpeechRecognized;