如何從指針讀取字符串緩衝區中的C＃

如何從C++ dll調用中讀取C＃中的錯誤字符串？如何從指針讀取字符串緩衝區中的C＃

// 
// PARAMETERS: 
//  objptr 
//   Pointer to class instance. 
// 
//  pBuffer 
//   Pointer to buffer receiving NULL terminated error message string. 
//   If this value is zero, the function returns the required buffer size, in bytes, 
//   and makes no use of the pBuffer. 
// 
//  nSize 
//   Size of receiving buffer. 
//   If this value is zero, the function returns the required buffer size, in bytes, 
//   and makes no use of the pBuffer. 
// 
// RETURN VALUES: 
//  If pBuffer or nSize is zero, the function returns the required buffer size, in bytes. 
//  If the function succeeds, the return value is number of bytes copied into pBuffer. 
//  If function fails return value is 0. 
// 
extern unsafe int GetError(uint objptr, byte* pBuffer, int nSize);

謝謝！

來源

2009-12-27 Santiago Corredoira

byte[] buffer = new byte[1000]; 
int size; 
unsafe 
{ 
    fixed (byte* p = buffer) 
    { 
    size = GetError(???, p, buffer.Length); 
    } 
} 
string result = System.Text.Encoding.Default.GetString(buffer, 0, size);

來源

2009-12-27 10:50:44

我用GetError（???，NULL，0）來獲得郵件大小，以創建緩衝區，還努力完善。謝謝！ –

您也可以嘗試將byte *更改爲StringBuilder，並通過它來避免不安全的代碼。 –

@Mikael：我該怎麼做？ dll方法期望字節* –