C#扫码枪触发拍照（扫码枪支持串口COM通讯）
效果图
1.普通USB摄像头
2.扫码枪支持串口通讯
3.引用AFORGE
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引用的内容（自己下载）
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C#Form1.Designer.cs 窗口设计代码
namespace com_get
{
partial class Form1
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.serialPort1 = new System.IO.Ports.SerialPort(this.components);
this.button1 = new System.Windows.Forms.Button();
this.label1 = new System.Windows.Forms.Label();
this.comboBox1 = new System.Windows.Forms.ComboBox();
this.textBox1 = new System.Windows.Forms.TextBox();
this.button2 = new System.Windows.Forms.Button();
this.label2 = new System.Windows.Forms.Label();
this.comboBox2 = new System.Windows.Forms.ComboBox();
this.button3 = new System.Windows.Forms.Button();
this.button4 = new System.Windows.Forms.Button();
this.button5 = new System.Windows.Forms.Button();
this.pictureBox1 = new AForge.Controls.PictureBox();
this.button6 = new System.Windows.Forms.Button();
this.textBox2 = new System.Windows.Forms.TextBox();
this.folderBrowserDialog1 = new System.Windows.Forms.FolderBrowserDialog();
this.videplayer = new AForge.Controls.VideoSourcePlayer();
this.label3 = new System.Windows.Forms.Label();
this.label4 = new System.Windows.Forms.Label();
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
this.SuspendLayout();
//
// serialPort1
//
this.serialPort1.DiscardNull = true;
//
// button1
//
this.button1.Location = new System.Drawing.Point(41, 634);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.TabIndex = 0;
this.button1.Text = "启动";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// label1
//
this.label1.AutoSize = true;
this.label1.Font = new System.Drawing.Font("宋体", 11F);
this.label1.Location = new System.Drawing.Point(38, 588);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(46, 15);
this.label1.TabIndex = 1;
this.label1.Text = "COM口";
//
// comboBox1
//
this.comboBox1.FormattingEnabled = true;
this.comboBox1.Location = new System.Drawing.Point(100, 583);
this.comboBox1.Name = "comboBox1";
this.comboBox1.Size = new System.Drawing.Size(58, 20);
this.comboBox1.TabIndex = 2;
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(38, 663);
this.textBox1.Multiline = true;
this.textBox1.Name = "textBox1";
this.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
this.textBox1.Size = new System.Drawing.Size(185, 51);
this.textBox1.TabIndex = 3;
//
// button2
//
this.button2.Location = new System.Drawing.Point(122, 634);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(83, 23);
this.button2.TabIndex = 5;
this.button2.Text = "停止";
this.button2.UseVisualStyleBackColor = true;
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(92, 32);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(41, 12);
this.label2.TabIndex = 6;
this.label2.Text = "摄像头";
//
// comboBox2
//
this.comboBox2.FormattingEnabled = true;
this.comboBox2.Location = new System.Drawing.Point(139, 29);
this.comboBox2.Name = "comboBox2";
this.comboBox2.Size = new System.Drawing.Size(121, 20);
this.comboBox2.TabIndex = 7;
//
// button3
//
this.button3.Location = new System.Drawing.Point(318, 27);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(75, 23);
this.button3.TabIndex = 8;
this.button3.Text = "打开摄像头";
this.button3.UseVisualStyleBackColor = true;
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// button4
//
this.button4.Cursor = System.Windows.Forms.Cursors.Default;
this.button4.Location = new System.Drawing.Point(419, 27);
this.button4.Name = "button4";
this.button4.Size = new System.Drawing.Size(75, 23);
this.button4.TabIndex = 9;
this.button4.Text = "关闭摄像头";
this.button4.UseVisualStyleBackColor = true;
this.button4.Click += new System.EventHandler(this.button4_Click);
//
// button5
//
this.button5.Location = new System.Drawing.Point(538, 27);
this.button5.Name = "button5";
this.button5.Size = new System.Drawing.Size(63, 23);
this.button5.TabIndex = 11;
this.button5.Text = "拍照";
this.button5.UseVisualStyleBackColor = true;
this.button5.Click += new System.EventHandler(this.button5_Click);
//
// pictureBox1
//
this.pictureBox1.BackColor = System.Drawing.SystemColors.ControlDark;
this.pictureBox1.Image = null;
this.pictureBox1.Location = new System.Drawing.Point(25, 186);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(198, 165);
this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
this.pictureBox1.TabIndex = 12;
this.pictureBox1.TabStop = false;
//
// button6
//
this.button6.Location = new System.Drawing.Point(671, 26);
this.button6.Name = "button6";
this.button6.Size = new System.Drawing.Size(75, 23);
this.button6.TabIndex = 13;
this.button6.Text = "保存路径";
this.button6.UseVisualStyleBackColor = true;
this.button6.Click += new System.EventHandler(this.button6_Click);
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(753, 28);
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(186, 21);
this.textBox2.TabIndex = 14;
//
// videplayer
//
this.videplayer.BackColor = System.Drawing.SystemColors.ButtonShadow;
this.videplayer.Location = new System.Drawing.Point(320, 60);
this.videplayer.Name = "videplayer";
this.videplayer.Size = new System.Drawing.Size(1116, 766);
this.videplayer.TabIndex = 10;
this.videplayer.Text = "videoSourcePlayer1";
this.videplayer.VideoSource = null;
//
// label3
//
this.label3.AutoSize = true;
this.label3.Font = new System.Drawing.Font("宋体", 12F);
this.label3.Location = new System.Drawing.Point(45, 399);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(88, 16);
this.label3.TabIndex = 15;
this.label3.Text = "流程单号码";
this.label3.TextAlign = System.Drawing.ContentAlignment.TopCenter;
//
// label4
//
this.label4.AutoSize = true;
this.label4.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.label4.Font = new System.Drawing.Font("宋体", 11.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.label4.Location = new System.Drawing.Point(41, 719);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(193, 107);
this.label4.TabIndex = 18;
this.label4.Text = "\r\n设置方法\r\n1.打开摄像头\r\n2.设置保存图片的路径\r\n3.选择扫描枪的 COM口 \r\n4.按下启动\r\n\r\n";
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(1473, 862);
this.Controls.Add(this.label4);
this.Controls.Add(this.label3);
this.Controls.Add(this.textBox2);
this.Controls.Add(this.button6);
this.Controls.Add(this.pictureBox1);
this.Controls.Add(this.button5);
this.Controls.Add(this.videplayer);
this.Controls.Add(this.button4);
this.Controls.Add(this.button3);
this.Controls.Add(this.comboBox2);
this.Controls.Add(this.label2);
this.Controls.Add(this.button2);
this.Controls.Add(this.textBox1);
this.Controls.Add(this.comboBox1);
this.Controls.Add(this.label1);
this.Controls.Add(this.button1);
this.Name = "Form1";
this.Text = "扫码枪通讯";
this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.Form1_FormClosing);
this.Load += new System.EventHandler(this.Form1_Load);
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.IO.Ports.SerialPort serialPort1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.ComboBox comboBox1;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.ComboBox comboBox2;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.Button button5;
private AForge.Controls.PictureBox pictureBox1;
private System.Windows.Forms.Button button6;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.FolderBrowserDialog folderBrowserDialog1;
public AForge.Controls.VideoSourcePlayer videplayer;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Button button4;
private System.Windows.Forms.Label label4;
}
}
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DOMO代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Forms;
using System.IO;
using System.Windows.Media.Imaging;
using AForge;
using AForge.Controls;
using AForge.Video;
using AForge.Video.DirectShow;
using Size = System.Drawing.Size;
namespace com_get
{
public partial class Form1 : Form
{
private FilterInfoCollection videoDevices; //AFORGE摄像头
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//枚举COM口
#region
foreach (string com in System.IO.Ports.SerialPort.GetPortNames())
{
comboBox1.Items.Add(com); //如果有COM口就添加进去
}
comboBox1.SelectedIndex = 1; //COM选择默认第一个
#endregion
//枚举视频信号
#region
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)
{
comboBox2.Items.Add(device.Name);
}
comboBox2.SelectedIndex = 0;
}
catch (ApplicationException)
{
comboBox2.Items.Add("没有视频设备");
videoDevices = null;
}
#endregion
button2.Enabled = false; //COM关闭不可以按
button4.Enabled = false; //关闭视频不可按
serialPort1.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(ComPort_DataReceived);//定义串口接受数据的一个方法
#region #判斷文件夾是否存在，對文件夾進行處理
if (Directory.Exists(setting.FilePath) == false)
{
Directory.CreateDirectory(setting.FilePath); //如果文件不存在则創建文件夾
}
#endregion
Control.CheckForIllegalCrossThreadCalls = false;
}
#region #串口方法
private void ComPort_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e) //串口函数
{
string str = serialPort1.ReadExisting(); //定义字符型变量str，把COM读取到的赋值给str
//textBox1.AppendText(str+"\r\n"); //str输出到屏幕框框内
setting.FileName = str + ".jpg";
getpicture();
}
#endregion
private void button1_Click(object sender, EventArgs e) //启动按钮
{
try
{
serialPort1.PortName = comboBox1.Text; //设置COM口
serialPort1.BaudRate = 9600; //COM传输速度
serialPort1.DataBits = 8; //COM数据位
serialPort1.Parity = System.IO.Ports.Parity.None; //奇偶校验
serialPort1.StopBits = System.IO.Ports.StopBits.One; //COM停止位
serialPort1.Open(); //打开端口
textBox1.AppendText("启动成功" + "\r\n");
button1.Enabled = false;
button2.Enabled = true;
comboBox1.Enabled = false;
}
catch
{
textBox1.AppendText("启动失败" + "\r\n");
MessageBox.Show("COM打开失败");
}
}
private void button2_Click(object sender, EventArgs e)
{
try
{
serialPort1.Close(); //关闭COM口
textBox1.AppendText("关闭成功" + "\r\n");
button1.Enabled = true;
button2.Enabled = false;
comboBox1.Enabled = true;
}
catch
{
textBox1.AppendText("COM关闭失败" + "\r\n");
MessageBox.Show("关闭失败");
}
} //关闭按钮
private void button3_Click(object sender, EventArgs e)
{
Camera_Connect();
}
private void Camera_Connect()
{
if (videoDevices == null)
{
MessageBox.Show("打开失败");
}
else
{
VideoCaptureDevice videoSource = new VideoCaptureDevice(videoDevices[comboBox2.SelectedIndex].MonikerString);//定义视频源
//videoSource.DesiredFrameSize = new System.Drawing.Size(1280, 1024); //设置大小
//videoSource.DesiredFrameRate = 1; //设置帧率
videplayer.VideoSource = videoSource; //控件与摄像头连接
videplayer.Start(); //控件开始将摄像头内容显示出来
button4.Enabled = true;
button3.Enabled = false;
}
}
private void button4_Click(object sender, EventArgs e)
{
videplayer.SignalToStop(); //停止控件播放
videplayer.WaitForStop();
button3.Enabled = true;
button4.Enabled = false;
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
//程序关闭前释放摄像头资源和COM断开
videplayer.SignalToStop();
videplayer.WaitForStop();
serialPort1.Close();
}
private void button5_Click(object sender, EventArgs e)
{
if (videplayer.IsRunning)
{
getpicture();
}
else
{
pictureBox1.Image = null;
}
}
private void getpicture() //拍照
{
try
{
BitmapSource bitmapSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(
videplayer.GetCurrentVideoFrame().GetHbitmap(),
IntPtr.Zero,
Int32Rect.Empty,
BitmapSizeOptions.FromEmptyOptions());
PngBitmapEncoder pE = new PngBitmapEncoder();
pE.Frames.Add(BitmapFrame.Create(bitmapSource));
string paddress = setting.FilePath + "\\" + setting.FileName;
if (File.Exists(paddress))
{
File.Delete(paddress);
}
using (Stream stream = File.Create(paddress))
{
pE.Save(stream);
}
pictureBox1.Image = videplayer.GetCurrentVideoFrame();//放图片到右边栏
label3.Text = setting.FileName;
}
catch
{
MessageBox.Show("拍照失败");
pictureBox1.Image = null;
}
}
private void button6_Click(object sender, EventArgs e)
{
folderBrowserDialog1.Description = "请选择文件夹";
if (folderBrowserDialog1.ShowDialog() == DialogResult.OK || folderBrowserDialog1.ShowDialog() == DialogResult.Yes)
{
textBox2.Text = folderBrowserDialog1.SelectedPath;
setting.FilePath = folderBrowserDialog1.SelectedPath;
}
}
}
}
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setting.css
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace com_get { class setting { //文件基本参数 public static string FileName = "test.jpg"; //默认图片名称 public static string FilePath = "D:\\picture"; //定义保存的文件夹 public static int pz=0; } }
