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   源码介绍

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using NetSDKCS;
using System.Diagnostics;
using System.IO;
using System.Runtime.InteropServices;

namespace CaptureDemo
{
    public partial class CaptureDemo : Form
    {
        private IntPtr _LoginID = IntPtr.Zero;
        private IntPtr _PlayID = IntPtr.Zero;
     //   private fSnapRevCallBack _SnapRevCallBack;
        private NET_DEVICEINFO_Ex _DeviceInfo = new NET_DEVICEINFO_Ex();
        private bool _IsSpanCapture = false;

        public string[] Readdata;//= Environment.GetCommandLineArgs();
        public string dataIP;//="10.207.159.169";
        public string dataport;//="8000";
        public string dataname;//="admin";
        public string datapass;//="jzs123456";
       

        public CaptureDemo(string[] datatext)
        {
            InitializeComponent();
            try
            {
              //  _SnapRevCallBack = new fSnapRevCallBack(SnapRevCallBack);
                NETClient.Init(null, IntPtr.Zero, null);
                //  NETClient.SetSnapRevCallBack(_SnapRevCallBack, IntPtr.Zero);
                if (datatext.Length == 4)
                {
                    Readdata = datatext;
                    dataIP = Readdata[0];
                    dataport = Readdata[1];
                    dataname = Readdata[2];
                    datapass = Readdata[3];
                    foreach (string strID in Readdata)
                    {
                       //  MessageBox.Show(strID);
                    }
                }
                else
                {
                    MessageBox.Show("输入格式不对");
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
                Process.GetCurrentProcess().Kill();
            }
            this.Load  = new EventHandler(CaptureDemo_Load);
        }
        
        void CaptureDemo_Load(object sender, EventArgs e)
        {
            //this.comboBox_channel.Enabled = false;
            //this.button_realplay.Enabled = false;
            if (IntPtr.Zero == _LoginID)
            {
                ushort port = 0;
                try
                {
                    //port = Convert.ToUInt16(this.textBox_port.Text.Trim());
                    port = Convert.ToUInt16(dataport);
                }
                catch
                {
                    MessageBox.Show("Input port error(输入端口错误)!");
                    return;
                }
                //  _LoginID = NETClient.Login(this.textBox_ip.Text.Trim(), port, this.textBox_name.Text.Trim(), this.textBox_password.Text, EM_LOGIN_SPAC_CAP_TYPE.TCP, IntPtr.Zero, ref _DeviceInfo);
                _LoginID = NETClient.Login(dataIP, port, dataname, datapass, EM_LOGIN_SPAC_CAP_TYPE.TCP, IntPtr.Zero, ref _DeviceInfo);
                if (IntPtr.Zero == _LoginID)
                {
                    MessageBox.Show(NETClient.GetLastError());
                    return;
                }
                for (int i = 0; i < _DeviceInfo.nChanNum; i  )
                {
                    this.comboBox_channel.Items.Add(i   1);
                }
                this.comboBox_channel.SelectedIndex = 0;
                this.comboBox_channel.Enabled = true;
                // this.button_realplay.Enabled = true;

                this.button_login.Text = "注销";
                //预览
                if (IntPtr.Zero == _PlayID)
                {
                    _PlayID = NETClient.RealPlay(_LoginID, comboBox_channel.SelectedIndex, this.pictureBox_preview.Handle);
                    if (IntPtr.Zero == _PlayID)
                    {
                        MessageBox.Show(NETClient.GetLastError());
                        return;
                    }
                     
                }
                else
                {
                    NETClient.StopRealPlay(_PlayID);
                    _PlayID = IntPtr.Zero;
                     
                    this.pictureBox_preview.Refresh();
                }

            }
            else
            {
                NETClient.Logout(_LoginID);
                _LoginID = IntPtr.Zero;
                this.comboBox_channel.Items.Clear();
                this.comboBox_channel.Enabled = false;


                this.button_login.Text = "登录";
                this.pictureBox_preview.Refresh();
                 
                if (_IsSpanCapture)
                {
                    _IsSpanCapture = false;

                }
            }

        }

        private void button_login_Click(object sender, EventArgs e)
        {
            
        }
        /// <summary>
        
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        //打开预览
       
        
      /*  
        private void SnapRevCallBack(IntPtr lLoginID, IntPtr pBuf, uint RevLen, uint EncodeType, uint CmdSerial, IntPtr dwUser)
        {
            string path = AppDomain.CurrentDomain.BaseDirectory   "image";
            if (!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }
            if (EncodeType == 10) //.jpg
            {
                DateTime now = DateTime.Now;
                string fileName = string.Format("{0}-{1}-{2}-{3}-{4}-{5}", now.Year, now.Month, now.Day, now.Hour, now.Minute, now.Second)   ".jpg";
                string filePath = path   "\\"   fileName;
                byte[] data = new byte[RevLen];
                Marshal.Copy(pBuf, data, 0, (int)RevLen);
                try
                {
                    //when the file is operate by local capture will throw expection.
                    using (FileStream stream = new FileStream(filePath, FileMode.OpenOrCreate))
                    {
                        stream.Write(data, 0, (int)RevLen);
                        stream.Flush();
                        stream.Dispose();
                    }
                }
                catch
                {
                    return;
                }
                //this.BeginInvoke(new Action(() => 
                //{
                //    if (pictureBox_image.Image != null)
                //    {
                //        pictureBox_image.Image.Dispose();
                //    }
                //    Image image = Image.FromFile(filePath);
                //    pictureBox_image.Image = image;
                //}));
            }
        }
        */
        protected override void OnClosed(EventArgs e)
        {
            base.OnClosed(e);
            NETClient.Cleanup();
        }

        private void textBox_port_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar != 8 && !Char.IsDigit(e.KeyChar))
            {
                e.Handled = true;
            }
        }

       
    }
}