Nuget安装这个2个：
AForge.Controls;
AForge.Video.DirectShow;
code：
namespace WindowsFormsApp1
{
partial class FormCameraVideo
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.tscbxCameras = new System.Windows.Forms.ComboBox();
this.panelVideo = new System.Windows.Forms.Panel();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// tscbxCameras
//
this.tscbxCameras.FormattingEnabled = true;
this.tscbxCameras.Location = new System.Drawing.Point(55, 50);
this.tscbxCameras.Name = "tscbxCameras";
this.tscbxCameras.Size = new System.Drawing.Size(379, 21);
this.tscbxCameras.TabIndex = 0;
this.tscbxCameras.SelectedIndexChanged += new System.EventHandler(this.tscbxCameras_SelectedIndexChanged);
//
// panelVideo
//
this.panelVideo.Location = new System.Drawing.Point(55, 94);
this.panelVideo.Name = "panelVideo";
this.panelVideo.Size = new System.Drawing.Size(379, 282);
this.panelVideo.TabIndex = 1;
//
// button1
//
this.button1.Location = new System.Drawing.Point(64, 392);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(128, 23);
this.button1.TabIndex = 2;
this.button1.Text = "btnPhotograph";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.btnPhotograph_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(335, 392);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(99, 23);
this.button2.TabIndex = 3;
this.button2.Text = "btnClose";
this.button2.UseVisualStyleBackColor = true;
this.button2.Click += new System.EventHandler(this.btnClose_Click);
//
// FormCameraVideo
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(540, 451);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.panelVideo);
this.Controls.Add(this.tscbxCameras);
this.Name = "FormCameraVideo";
this.Text = "FormCameraVideo";
this.Load += new System.EventHandler(this.FormCameraVideo_Load);
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.ComboBox tscbxCameras;
private System.Windows.Forms.Panel panelVideo;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
}
}
using AForge.Controls;
using AForge.Video.DirectShow;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Forms;
using System.Windows.Media.Imaging;
namespace WindowsFormsApp1
{
public partial class FormCameraVideo : Form
{
public FormCameraVideo()
{
InitializeComponent();
panelVideo.Controls.Add(videoSourcePlayer);
videoSourcePlayer.Dock = DockStyle.Fill;
}
private VideoSourcePlayer videoSourcePlayer = new VideoSourcePlayer();
private FilterInfoCollection videoDevices;
private void FormCameraVideo_Load(object sender, EventArgs e)
{
try
{
// 枚举所有视频输入设备
videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
if (videoDevices.Count == 0)
throw new ApplicationException();
foreach (FilterInfo device in videoDevices)
{
tscbxCameras.Items.Add(device.Name);
}
tscbxCameras.SelectedIndex = 0;
}
catch (ApplicationException)
{
tscbxCameras.Items.Add("No local capture devices");
videoDevices = null;
}
}
private void CameraConn()
{
VideoCaptureDevice videoSource = new VideoCaptureDevice(videoDevices[tscbxCameras.SelectedIndex].MonikerString);
// videoSource.DesiredFrameSize = new System.Drawing.Size(320, 240);
// videoSource.DesiredFrameRate = 1;
videoSourcePlayer.VideoSource = videoSource;
videoSourcePlayer.Start();
}
private void tscbxCameras_SelectedIndexChanged(object sender, EventArgs e)
{
CameraConn();
}
private void btnPhotograph_Click(object sender, EventArgs e)
{
try
{
if (videoSourcePlayer.IsRunning)
{
BitmapSource bitmapSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(
videoSourcePlayer.GetCurrentVideoFrame().GetHbitmap(),
IntPtr.Zero,
Int32Rect.Empty,
BitmapSizeOptions.FromEmptyOptions());
PngBitmapEncoder pE = new PngBitmapEncoder();
pE.Frames.Add(BitmapFrame.Create(bitmapSource));
string picName = GetImagePath() + "\CameraPic" + ".jpg";
if (File.Exists(picName))
{
File.Delete(picName);
}
using (Stream stream = File.Create(picName))
{
pE.Save(stream);
}
//---------------拍照完成后关摄像头并刷新同时关窗体
if (videoSourcePlayer != null && videoSourcePlayer.IsRunning)
{
videoSourcePlayer.SignalToStop();
videoSourcePlayer.WaitForStop();
}
this.Close();
//----------------------------------------------
}
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show("摄像头异常：" + ex.Message);
}
}
private string GetImagePath()
{
string personImgPath = Path.GetDirectoryName(AppDomain.CurrentDomain.BaseDirectory)
+ Path.DirectorySeparatorChar.ToString() + "PersonImg";
if (!Directory.Exists(personImgPath))
{
Directory.CreateDirectory(personImgPath);
}
return personImgPath;
}
/// <summary>
/// Close the camera
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnClose_Click(object sender, EventArgs e)
{
videoSourcePlayer.SignalToStop();
videoSourcePlayer.WaitForStop();
}
}
}
以上是全部代码。测试笔记本电脑摄像头OK。