C＃線程參數無效

Question

我接到了一箇舊後本準則

public delegate void Worker(); 
private static Thread worker; 

public static void Init(Worker work) 
{ 
    worker = new Thread(new ThreadStart(work)); 
    worker.Start(); 
} 

public static void Work() 
{ 
    string result = testing; 
} 

我通過添加參數修改代碼，當我嘗試調用初始化（「AA」），我得到一個錯誤「最佳超載方法有一些無效參數」

以下是編輯的代碼

public delegate void Worker(); 
private static Thread worker; 

public static void Init(Worker work) 
{ 
    worker = new Thread(new ThreadStart(work)); 
    worker.Start(); 
} 

public static void Work(string testing) 
{ 
    string result = testing; 
} 

Answer 1

你Init方法採用委託和要傳遞一個字符串，這就是爲什麼沒有超載。

你想做的事：Init(Work)

PS：您的問題無關，與線程。

Answer 2

如果你想通過一些數據的線程可以使用ParametrizedThreadStart，或者匿名方法：

private static Thread worker; 

public static void Init(string testing) 
{ 
    // passing anonymous method, which will capture parameter 
    worker = new Thread(() => Work(testing)); 
    worker.Start(); 
} 

public static void Work(string testing) 
{ 
    string result = testing; 
} 

---

private static Thread worker; 

public static void Init(string testing) 
{ 
    // passing PrametrizedThreadStart delegate 
    worker = new Thread(Work); 
    worker.Start(testing); // passing parameter 
} 

// PrametrizedThreadStart delegate accepts object as parameter 
public static void Work(object testing) 
{ 
    string result = (string)testing; 
} 

Answer 3

的問題是你的Worker代表期望採取string參數。您需要更新並在參數中傳遞，例如。

public delegate void Worker(string str); 
private static Thread worker; 
public static void Init(Worker work) 
{ 
    worker = new Thread(work); 
    worker.Start("AA"); 
} 
public static void Work(string testing) 
{ 
    string result = testing; 
}