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 AForge.Video.DirectShow;

 using AForge.Video;

 using System.Diagnostics;

 namespace Aforge调用摄像头

 {

     public partial class Form1 : Form

     {

         public Form1()

         {

             InitializeComponent();

         }

         private void Form1_Load(object sender, EventArgs e)

         {

             try

             {

                 videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);//枚举所有的视频输入设备

                 if (videoDevices.Count == )

                     throw new ApplicationException();

                 foreach (FilterInfo device in videoDevices)

                 {

                     cbCapture.Items.Add(device.Name);//把所有的视频设备添加到下拉框中

                 }

                 cbCapture.SelectedIndex = ;

                 videoSource = new VideoCaptureDevice(videoDevices[cbCapture.SelectedIndex].MonikerString);//摄像头的名称

                 videoSource.DesiredFrameSize = new Size(, );//设置大小

                 videoSource.DesiredFrameRate = ;//设置帧率

                 videoSource.NewFrame += new NewFrameEventHandler(video_NewFrame);

                 videoSource.Start();

             }

             catch (Exception ex)

             {

                 MessageBox.Show(ex.Message);

             }

         }

         private FilterInfoCollection videoDevices;

         private VideoCaptureDevice videoSource;

         private void btnStart_Click(object sender, EventArgs e)

         {

             videoSource.Stop();

             videoSource = new VideoCaptureDevice(videoDevices[cbCapture.SelectedIndex].MonikerString);//摄像头的名称

             videoSource.DesiredFrameSize = new Size(, );//设置大小

             videoSource.DesiredFrameRate = ;//设置帧率

             videoSource.NewFrame += new NewFrameEventHandler(video_NewFrame);

             videoSource.Start();

         }

         private void video_NewFrame(object sender, NewFrameEventArgs eventArgs)

         {

             Bitmap bitmap = (Bitmap)eventArgs.Frame.Clone();

             pictureBox1.Image = bitmap;

         }

         private void btnConfig_Click(object sender, EventArgs e)

         {

             if ((videoSource != null) && (videoSource is VideoCaptureDevice))

             {

                 try

                 {

                     ((VideoCaptureDevice)videoSource).DisplayPropertyPage(this.Handle);

                 }

                 catch (NotSupportedException ex)

                 {

                     MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);

                 }

             }

         }

         private void Form1_FormClosing(object sender, FormClosingEventArgs e)

         {

             Process p = Process.GetCurrentProcess();

             if (p.HasExited == false)

             {

                 p.Kill();

             }

         }

     }

 }