如何將靜態數組的元素傳遞給非靜態方法？

Question

我有一個靜態數組，我需要將它的任意元素傳遞給一個非靜態方法。

我該怎麼做？

public class MyClass 
{ 
    public static int[] staticArray = { 3, 11, 43, 683, 2731 }; 

    public void SomeMethod(int value) 
    { 
     //...stuff... 
    } 

    public static void staticMethod() 
    { 
     SomeMethod(staticArray[2]); //error here 
    } 
} 

當我嘗試這樣的事情時，我得到錯誤An object reference is required for the non-static field, method, or property。

Answer 1

您的代碼原樣沒問題，但是當您嘗試調用instance方法時，會出現'An object reference is required for the non-static field, method, or property'，或者在靜態方法中訪問非類的實例的非靜態字段/屬性。例如：

class MyClass 
{ 
    private int imNotStatic; 

    public static void Bar() 
    { 
     // This will give you your 'An object reference is required` compile 
     // error, since you are trying to call the instance method SomeMethod 
     // from a static method, as there is no 'this' to call SomeMethod on. 
     SomeMethod(5); 

     // This will also give you that error, as you are calling SomeMethod as 
     // if it were a static method. 
     MyClass.SomeMethod(42); 

     // Again, same error, there is no 'this' to read imNotStatic from. 
     imNotStatic = -1; 
    } 

    public void SomeMethod(int x) 
    { 
     // Stuff 
    } 
} 

確保您沒有執行上述任一操作。你確定你從構造函數調用SomeMethod？