public static int USNTDVR_Login_V30(string sDVRIP, ushort wDVRPort, string sUserName, string sPassword, out NET_DVR_DEVICEINFO_V30 lpDeviceInfo) { if (_isX64) { return(USNTDvrDll64.USNTDVR_Login_V30(sDVRIP, wDVRPort, sUserName, sPassword, out lpDeviceInfo)); } else { return(USNTDvrDll32.USNTDVR_Login_V30(sDVRIP, wDVRPort, sUserName, sPassword, out lpDeviceInfo)); } }