如何將此結構數組傳遞給非託管代碼？

Question

C＃結構定義爲：

[StructLayout(LayoutKind.Sequential)] 
    public struct RecognizeResult 
    { 
     /// float 
     public float similarity; 

     /// char* 
     [MarshalAs(UnmanagedType.LPStr)] 
     public string fileName; 
    } 

c function signature: 
void FaceRecognition(RecognizeResult *similarity); //where similarity is a pointer to an array 

P /調用簽名：

[DllImport(DllName, EntryPoint = "FaceRecognition")] 
    public static extern void Recognize(ref RecognizeResult similarity); 

這是我如何調用C++函數在託管代碼：

RecognizeResult[] results = new RecognizeResult[100]; 
Recognize(ref results[0]); //through p/invoke 

原來陣列不能傳遞給非託管代碼，只傳遞第一個元素。 我應該如何將數組傳遞給非託管代碼（它甚至可能）？

BTW，我一定到引腳排列調用非託管代碼時，使GC將不會移動陣列？

Answer 1

試試這個：

[DllImport(DllName, EntryPoint = "FaceRecognition")] 
public static extern void Recognize(RecognizeResult[] similarity); 

RecognizeResult[] results = new RecognizeResult[100]; 
// fill array elements 
Recognize(results);