将对象转换为byte []

Question

我试图将检索到的注册表值转换object为byte[].它存储为REG_BINARY.我试着用BinaryFormatter用MemoryStream.但是,它增加了我不想要的开销信息.当我通过执行该函数将字节数组转换为字符串时,我观察到了这一点Convert.ToBase64String(..).我正在执行这些功能,因为我正在测试在注册表中存储和检索加密密钥.

Answer 1

如果它是一个REG_BINARY,那么当你检索它时它应该已经是一个字节数组了...你不能把它投射到它byte[]吗？

或者,如果您尚未在代码中验证它是REG_BINARY,则可能需要使用:

byte[] binaryData = value as byte[];
if (binaryData == null)
{
    // Handle case where value wasn't found, or wasn't binary data
}
else
{
    // Use binaryData here
}

Answer 2

试试这个.如果它已经是REG_BINARY,那么您需要做的就是投射它:

static byte[] GetFoo()
{

  var obj = Microsoft.Win32.Registry.GetValue("HKEY_LOCAL_MACHINE\\Software", "foo", null);
  //TODO: Write a better exception for when it isn't found
  if (obj == null) throw new Exception(); 

  var bytearray = obj as byte[];
  //TODO: Write a better exception for when its found but not a REG_BINARY
  if (bytearray == null) throw new Exception(); 

  return bytearray;
}