【注意事項】
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1. 更新設備網絡SDK時，SDK開發包【庫文件】里的HCNetSDK.dll、HCCore.dll、PlayCtrl.dll、SuperRender.dll、AudioRender.dll、HCNetSDKCom文件夾、ssleay32.dll、libeay32.dll、hlog.dll、hpr.dll、zlib1.dll、log4cxx.properties等文件均要加載到程序里面，【HCNetSDKCom文件夾】（包含里面的功能組件dll庫文件）需要和HCNetSDK.dll、HCCore.dll一起加載，放在同一個目錄下，且HCNetSDKCom文件夾名不能修改。

2. 如果自行開發軟件不能正常實現相應功能，而且程序沒有指定加載的dll庫路徑，請在程序運行的情況下嘗試刪除HCNetSDK.dll。如果可以刪除，說明程序可能調用到系統盤Windows->System32目錄下的dll文件，建議刪除或者更新該目錄下的相關dll文件；如果不能刪除，dll文件右鍵選擇屬性確認SDK庫版本。

3. 如按上述步驟操作后還是不能實現相應功能，請根據NET_DVR_GetLastError返回的錯誤號判斷原因。

4.適用型號：DS-2CD2D15DWD 2.8MM，DS-2CD6424FWD-20 3.7MM，DS-2CD6425FWD-20? 2.8MM B

5.dll和sdk可以上海康官網下載：https://www.hikvision.com/cn/download_61.html

?

Form1.cs:

using System; using System.Threading.Tasks; using System.Windows.Forms;namespace WindowsFormsApp1 {public partial class Form1 : Form{public Form1(){InitializeComponent();init();}public IntPtr PictureDev1Cam { get { return pictureBox1.Handle; } }public IntPtr PictureDev2Cam { get { return pictureBox2.Handle; } }IntPtr Cam1Handle = IntPtr.Zero;IntPtr Cam2Handle = IntPtr.Zero;Cam Camera1 = new Cam();Cam Camera2 = new Cam();static private string Cam1IP = "192.168.1.64";static private string Cam2IP = "192.168.1.61";void init(){Cam1Handle = PictureDev1Cam;Cam2Handle = PictureDev2Cam;}private void ConnectCamera(int whitch){string userName = "admin";string password = "a123456.";int PortCamera = 8000;if (whitch == 1){labelCamera1Status.Text = "攝像頭連接中...";Task.Run(() =>{if (!Camera1.ConnectCamera(Cam1IP, PortCamera, userName, password)){this.Invoke((Action)delegate { labelCamera1Status.Text = "攝像頭連接失敗"; });}else{this.Invoke((Action)delegate { labelCamera1Status.Text = ""; });Camera1.Preview(Cam1Handle);Camera1.AdjustMirrorPara(1);Cam1ReconnectTimer.Stop();}});}else{labelCamera2Status.Text = "攝像頭連接中...";Task.Run(() =>{if (!Camera2.ConnectCamera(Cam2IP, PortCamera, userName, password)){this.Invoke((Action)delegate { labelCamera2Status.Text = "攝像頭連接失敗"; });}else{this.Invoke((Action)delegate { labelCamera2Status.Text = ""; });Camera2.Preview(Cam2Handle);Camera2.AdjustMirrorPara(1);Cam2ReconnectTimer.Stop();}});}}private void Cam1ReconnectTimer_Tick(object sender, EventArgs e){ConnectCamera(1);}private void Cam2ReconnectTimer_Tick(object sender, EventArgs e){ConnectCamera(2);}private void Form1_Load(object sender, EventArgs e){}} }

cam:

using System; using System.IO; using System.Runtime.InteropServices;namespace WindowsFormsApp1 {class Cam{private bool initSDK = false;private uint lastErr = 0;private string debugMessage = "";private bool err = false;private Int32 userID = -1;public bool Isconnected { get; private set; }UInt32 dwReturn = 0;Int32 nSize = 0;IntPtr ptrPicCfg;private CHCNetSDK.NET_DVR_CAMERAPARAMCFG_EX camPara = new CHCNetSDK.NET_DVR_CAMERAPARAMCFG_EX();private CHCNetSDK.NET_DVR_DEVICEINFO_V30 DeviceInfo = new CHCNetSDK.NET_DVR_DEVICEINFO_V30();private Int32 realPlayHandle = -1;public bool ConnectCamera(string deviceIP, int port, string userName, string password){initSDK = CHCNetSDK.NET_DVR_Init();if (initSDK == false){lastErr = CHCNetSDK.NET_DVR_GetLastError();debugMessage = "初始化過程失敗, 錯誤碼：" + lastErr;err = true;return false;}else{CHCNetSDK.NET_DVR_SetLogToFile(3, Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "SdkLog\\"), true);}CHCNetSDK.NET_DVR_DEVICEINFO_V30 DeviceInfo = new CHCNetSDK.NET_DVR_DEVICEINFO_V30();userID = CHCNetSDK.NET_DVR_Login_V30(deviceIP, port, userName, password, ref DeviceInfo);if (userID < 0){lastErr = CHCNetSDK.NET_DVR_GetLastError();debugMessage = "注冊失敗, 錯誤碼：" + lastErr;err = true;return false;}Isconnected = true;return true;}public void AdjustMirrorPara(byte type){dwReturn = 0;nSize = Marshal.SizeOf(camPara);ptrPicCfg = Marshal.AllocHGlobal(nSize);Marshal.StructureToPtr(camPara, ptrPicCfg, false);if (CHCNetSDK.NET_DVR_GetDVRConfig(userID, 3368, DeviceInfo.byStartChan, ptrPicCfg, (uint)nSize, ref dwReturn)){camPara = (CHCNetSDK.NET_DVR_CAMERAPARAMCFG_EX)Marshal.PtrToStructure(ptrPicCfg, typeof(CHCNetSDK.NET_DVR_CAMERAPARAMCFG_EX));Marshal.FreeHGlobal(ptrPicCfg);camPara.byMirror = type;ptrPicCfg = Marshal.AllocHGlobal(nSize);Marshal.StructureToPtr(camPara, ptrPicCfg, false);if (!CHCNetSDK.NET_DVR_SetDVRConfig(userID, 3369, DeviceInfo.byStartChan, ptrPicCfg, (uint)nSize)){lastErr = CHCNetSDK.NET_DVR_GetLastError();debugMessage = "設置鏡像關閉失敗, 錯誤碼：" + lastErr;err = true;}}else{lastErr = CHCNetSDK.NET_DVR_GetLastError();debugMessage = "獲取參數失敗, 錯誤碼：" + lastErr;err = true;}Marshal.FreeHGlobal(ptrPicCfg);}public void Preview(IntPtr handle){CHCNetSDK.NET_DVR_PREVIEWINFO previewInfo = new CHCNetSDK.NET_DVR_PREVIEWINFO();previewInfo.hPlayWnd = handle;//預覽窗口previewInfo.lChannel = 1;//(int)DeviceInfo.byStartChan;//預覽的設備通道previewInfo.dwStreamType = 0;//碼流類型：0-主碼流，1-子碼流，2-碼流3，3-碼流4，以此類推previewInfo.dwLinkMode = 0;//連接方式：0- TCP方式，1- UDP方式，2- 多播方式，3- RTP方式，4-RTP/RTSP，5-RSTP/HTTP previewInfo.bBlocked = true; //0- 非阻塞取流，1- 阻塞取流previewInfo.dwDisplayBufNum = 0; //播放庫播放緩沖區最大緩沖幀數//CHCNetSDK.REALDATACALLBACK RealData = new CHCNetSDK.REALDATACALLBACK(RealDataCallBack);//預覽實時流回調函數IntPtr pUser = new IntPtr();//用戶數據//打開預覽 Start live view realPlayHandle = CHCNetSDK.NET_DVR_RealPlay_V40(userID, ref previewInfo, null/*RealData*/, pUser);if (realPlayHandle < 0){lastErr = CHCNetSDK.NET_DVR_GetLastError();debugMessage = "預覽失敗, 錯誤碼：" + lastErr; //預覽失敗，輸出錯誤號err = true;//MessageBox.Show(str);return;}}} }

CHCNetSDK.cs

這個太長，需要的可以上我的github下載，省略，我的賬號zyr365

工程文件

bin目錄

定時器：

運行結果：

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