我有以下代码:
public static string getTrack1(string track1, int len)
{
IntPtr track1Ptr = UnsafeNativeMethods.Decrypt(track1, len);
Byte[] track1b = new Byte[200];
Marshal.Copy(track1Ptr, track1b, 0, track1b.Length);
return track1b.ToString();
}
解密方法的减速是:
internal static class UnsafeNativeMethods
{
[DllImport(_dllLocation, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr Decrypt(string track1, int dataLen);
}
我从visual c++
代码中返回unsigned char*
,但每当我从c#
代码调用dll时,它总是返回"System.Byte[]
"而不是值。我在marshal
方面做错了什么吗?
请帮帮我。