C#调用摄像头实现拍照功能的示例代码

using AForge.Controls;
using AForge.Video;
using AForge.Video.DirectShow;

public static bool GetDevices()
    {
      try
      {
        //枚举所有视频输入设备
        videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
        if (videoDevices.Count != 0)
        {
          Console.WriteLine("已找到视频设备.");
          return true;
        }

        return false;
      }
      catch (Exception ex)
      {
        Console.WriteLine("error:没有找到视频设备！具体原因：" + ex.Message);
        return false;
      }

    }

private static void CameraConn()
    {
      videoSource = new VideoCaptureDevice(videoDevices[selectedDeviceIndex].MonikerString);
      vid.VideoSource = videoSource;
      vid.Start();
    }

public static void GrabBitmap()
    {
      if (videoSource == null)
      {
        return;
      }
      videoSource.NewFrame += new NewFrameEventHandler(videoSource_NewFrame); //新建事件
    }

    static void videoSource_NewFrame(object sender, NewFrameEventArgs eventArgs)
    {
      Bitmap bmp = (Bitmap)eventArgs.Frame.Clone();  //Clone摄像头中的一帧
      bmp.Save(path, ImageFormat.Png);
      videoSource.NewFrame -= new NewFrameEventHandler(videoSource_NewFrame);    //如果这里不写这个，一会儿会不停的拍照，
    }