ByteScout Data Extraction Suite – C# – Read barcode from live video cam with barcode reader sdk

On-demand (REST Web API) version:
 Web API (on-demand version)

On-premise offline SDK for Windows:
 60 Day Free Trial (on-premise)

MainForm.Designer.cs

      
namespace ReadFromVideoCamera
{
    partial class MainForm
    {
        /// <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.lblFoundBarcodes = new System.Windows.Forms.Label();
			this.pictureBoxPreview = new System.Windows.Forms.PictureBox();
			this.btnStop = new System.Windows.Forms.Button();
			this.btnStart = new System.Windows.Forms.Button();
			this.rtbFoundBarcodes = new System.Windows.Forms.RichTextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.cmbCamera = new System.Windows.Forms.ComboBox();
			this.btnExit = new System.Windows.Forms.Button();
			this.label3 = new System.Windows.Forms.Label();
			this.cmbBarcodeType = new System.Windows.Forms.ComboBox();
			this.lblScanning = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.tbCameraWidth = new System.Windows.Forms.TextBox();
			this.tbCameraHeight = new System.Windows.Forms.TextBox();
			this.label4 = new System.Windows.Forms.Label();
			this.cbStopOnFirstBarcode = new System.Windows.Forms.CheckBox();
			this.btnUpdateCameraImageDimensions = new System.Windows.Forms.Button();
			this.btnCameraProperties = new System.Windows.Forms.Button();
			((System.ComponentModel.ISupportInitialize)(this.pictureBoxPreview)).BeginInit();
			this.SuspendLayout();
			// 
			// lblFoundBarcodes
			// 
			this.lblFoundBarcodes.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
			this.lblFoundBarcodes.AutoSize = true;
			this.lblFoundBarcodes.Location = new System.Drawing.Point(12, 600);
			this.lblFoundBarcodes.Name = "lblFoundBarcodes";
			this.lblFoundBarcodes.Size = new System.Drawing.Size(93, 13);
			this.lblFoundBarcodes.TabIndex = 5;
			this.lblFoundBarcodes.Text = "Found 0 barcodes";
			// 
			// pictureBoxPreview
			// 
			this.pictureBoxPreview.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
            | System.Windows.Forms.AnchorStyles.Left) 
            | System.Windows.Forms.AnchorStyles.Right)));
			this.pictureBoxPreview.BackColor = System.Drawing.Color.White;
			this.pictureBoxPreview.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.pictureBoxPreview.Location = new System.Drawing.Point(12, 117);
			this.pictureBoxPreview.Name = "pictureBoxPreview";
			this.pictureBoxPreview.Size = new System.Drawing.Size(640, 480);
			this.pictureBoxPreview.SizeMode = System.Windows.Forms.PictureBoxSizeMode.CenterImage;
			this.pictureBoxPreview.TabIndex = 8;
			this.pictureBoxPreview.TabStop = false;
			// 
			// btnStop
			// 
			this.btnStop.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
			this.btnStop.Enabled = false;
			this.btnStop.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(204)));
			this.btnStop.Location = new System.Drawing.Point(98, 690);
			this.btnStop.Name = "btnStop";
			this.btnStop.Size = new System.Drawing.Size(80, 26);
			this.btnStop.TabIndex = 7;
			this.btnStop.Text = "Stop";
			this.btnStop.UseVisualStyleBackColor = true;
			this.btnStop.Click += new System.EventHandler(this.btnStop_Click);
			// 
			// btnStart
			// 
			this.btnStart.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
			this.btnStart.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(204)));
			this.btnStart.Location = new System.Drawing.Point(12, 690);
			this.btnStart.Name = "btnStart";
			this.btnStart.Size = new System.Drawing.Size(80, 26);
			this.btnStart.TabIndex = 6;
			this.btnStart.Text = "Start";
			this.btnStart.UseVisualStyleBackColor = true;
			this.btnStart.Click += new System.EventHandler(this.btnStart_Click);
			// 
			// rtbFoundBarcodes
			// 
			this.rtbFoundBarcodes.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left) 
            | System.Windows.Forms.AnchorStyles.Right)));
			this.rtbFoundBarcodes.Location = new System.Drawing.Point(12, 616);
			this.rtbFoundBarcodes.Name = "rtbFoundBarcodes";
			this.rtbFoundBarcodes.Size = new System.Drawing.Size(640, 68);
			this.rtbFoundBarcodes.TabIndex = 5;
			this.rtbFoundBarcodes.Text = "";
			// 
			// label1
			// 
			this.label1.AutoSize = true;
			this.label1.Location = new System.Drawing.Point(9, 42);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(80, 13);
			this.label1.TabIndex = 20;
			this.label1.Text = "Camera Device";
			// 
			// cmbCamera
			// 
			this.cmbCamera.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
			this.cmbCamera.FormattingEnabled = true;
			this.cmbCamera.Location = new System.Drawing.Point(163, 39);
			this.cmbCamera.Name = "cmbCamera";
			this.cmbCamera.Size = new System.Drawing.Size(245, 21);
			this.cmbCamera.TabIndex = 1;
			this.cmbCamera.SelectedIndexChanged += new System.EventHandler(this.cmbCamera_SelectedIndexChanged);
			// 
			// btnExit
			// 
			this.btnExit.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
			this.btnExit.DialogResult = System.Windows.Forms.DialogResult.Cancel;
			this.btnExit.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(204)));
			this.btnExit.Location = new System.Drawing.Point(562, 690);
			this.btnExit.Name = "btnExit";
			this.btnExit.Size = new System.Drawing.Size(90, 26);
			this.btnExit.TabIndex = 8;
			this.btnExit.Text = "Exit";
			this.btnExit.UseVisualStyleBackColor = true;
			this.btnExit.Click += new System.EventHandler(this.btnExit_Click);
			// 
			// label3
			// 
			this.label3.AutoSize = true;
			this.label3.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(204)));
			this.label3.Location = new System.Drawing.Point(9, 15);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(131, 13);
			this.label3.TabIndex = 23;
			this.label3.Text = "Barcode Type To Scan";
			// 
			// cmbBarcodeType
			// 
			this.cmbBarcodeType.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
			this.cmbBarcodeType.FormattingEnabled = true;
			this.cmbBarcodeType.Location = new System.Drawing.Point(163, 12);
			this.cmbBarcodeType.Name = "cmbBarcodeType";
			this.cmbBarcodeType.Size = new System.Drawing.Size(245, 21);
			this.cmbBarcodeType.Sorted = true;
			this.cmbBarcodeType.TabIndex = 0;
			// 
			// lblScanning
			// 
			this.lblScanning.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
			this.lblScanning.AutoSize = true;
			this.lblScanning.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(204)));
			this.lblScanning.Location = new System.Drawing.Point(580, 600);
			this.lblScanning.Name = "lblScanning";
			this.lblScanning.Size = new System.Drawing.Size(67, 13);
			this.lblScanning.TabIndex = 24;
			this.lblScanning.Text = "Scanning...";
			this.lblScanning.Visible = false;
			// 
			// label2
			// 
			this.label2.AutoSize = true;
			this.label2.Location = new System.Drawing.Point(9, 69);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(132, 13);
			this.label2.TabIndex = 26;
			this.label2.Text = "Camera Image Dimensions";
			// 
			// tbCameraWidth
			// 
			this.tbCameraWidth.Location = new System.Drawing.Point(163, 66);
			this.tbCameraWidth.Name = "tbCameraWidth";
			this.tbCameraWidth.Size = new System.Drawing.Size(35, 20);
			this.tbCameraWidth.TabIndex = 2;
			this.tbCameraWidth.Text = "640";
			// 
			// tbCameraHeight
			// 
			this.tbCameraHeight.Location = new System.Drawing.Point(222, 66);
			this.tbCameraHeight.Name = "tbCameraHeight";
			this.tbCameraHeight.Size = new System.Drawing.Size(35, 20);
			this.tbCameraHeight.TabIndex = 3;
			this.tbCameraHeight.Text = "480";
			// 
			// label4
			// 
			this.label4.AutoSize = true;
			this.label4.Location = new System.Drawing.Point(204, 69);
			this.label4.Name = "label4";
			this.label4.Size = new System.Drawing.Size(12, 13);
			this.label4.TabIndex = 29;
			this.label4.Text = "x";
			// 
			// cbStopOnFirstBarcode
			// 
			this.cbStopOnFirstBarcode.AutoSize = true;
			this.cbStopOnFirstBarcode.Location = new System.Drawing.Point(12, 94);
			this.cbStopOnFirstBarcode.Name = "cbStopOnFirstBarcode";
			this.cbStopOnFirstBarcode.Size = new System.Drawing.Size(154, 17);
			this.cbStopOnFirstBarcode.TabIndex = 30;
			this.cbStopOnFirstBarcode.Text = "Stop on first barcode found";
			this.cbStopOnFirstBarcode.UseVisualStyleBackColor = true;
			// 
			// btnUpdateCameraImageDimensions
			// 
			this.btnUpdateCameraImageDimensions.Location = new System.Drawing.Point(263, 64);
			this.btnUpdateCameraImageDimensions.Name = "btnUpdateCameraImageDimensions";
			this.btnUpdateCameraImageDimensions.Size = new System.Drawing.Size(71, 24);
			this.btnUpdateCameraImageDimensions.TabIndex = 4;
			this.btnUpdateCameraImageDimensions.Text = "Update";
			this.btnUpdateCameraImageDimensions.UseVisualStyleBackColor = true;
			this.btnUpdateCameraImageDimensions.Click += new System.EventHandler(this.btnUpdateCameraImageDimensions_Click);
			// 
			// btnCameraProperties
			// 
			this.btnCameraProperties.Location = new System.Drawing.Point(414, 38);
			this.btnCameraProperties.Name = "btnCameraProperties";
			this.btnCameraProperties.Size = new System.Drawing.Size(131, 23);
			this.btnCameraProperties.TabIndex = 31;
			this.btnCameraProperties.Text = "Camera Properties";
			this.btnCameraProperties.UseVisualStyleBackColor = true;
			this.btnCameraProperties.Click += new System.EventHandler(this.btnCameraProperties_Click);
			// 
			// MainForm
			// 
			this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
			this.CancelButton = this.btnExit;
			this.ClientSize = new System.Drawing.Size(664, 728);
			this.Controls.Add(this.btnCameraProperties);
			this.Controls.Add(this.btnUpdateCameraImageDimensions);
			this.Controls.Add(this.cbStopOnFirstBarcode);
			this.Controls.Add(this.label4);
			this.Controls.Add(this.tbCameraHeight);
			this.Controls.Add(this.tbCameraWidth);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.lblScanning);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.cmbBarcodeType);
			this.Controls.Add(this.btnExit);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.cmbCamera);
			this.Controls.Add(this.rtbFoundBarcodes);
			this.Controls.Add(this.btnStop);
			this.Controls.Add(this.btnStart);
			this.Controls.Add(this.pictureBoxPreview);
			this.Controls.Add(this.lblFoundBarcodes);
			this.Name = "MainForm";
			this.ShowIcon = false;
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "Barcode Scanner";
			this.Load += new System.EventHandler(this.Form_Load);
			((System.ComponentModel.ISupportInitialize)(this.pictureBoxPreview)).EndInit();
			this.ResumeLayout(false);
			this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.Label lblFoundBarcodes;
        private System.Windows.Forms.PictureBox pictureBoxPreview;
        private System.Windows.Forms.Button btnStop;
        private System.Windows.Forms.Button btnStart;
        private System.Windows.Forms.RichTextBox rtbFoundBarcodes;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.ComboBox cmbCamera;
        private System.Windows.Forms.Button btnExit;
        private System.Windows.Forms.Label label3;
        private System.Windows.Forms.ComboBox cmbBarcodeType;
        private System.Windows.Forms.Label lblScanning;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.TextBox tbCameraWidth;
        private System.Windows.Forms.TextBox tbCameraHeight;
        private System.Windows.Forms.Label label4;
		private System.Windows.Forms.CheckBox cbStopOnFirstBarcode;
        private System.Windows.Forms.Button btnUpdateCameraImageDimensions;
		private System.Windows.Forms.Button btnCameraProperties;
	}
}


    

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Data Extraction Suite Home Page

Explore ByteScout Data Extraction Suite Documentation

Explore Samples

Sign Up for ByteScout Data Extraction Suite Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

MainForm.cs

      
using System;
using System.ComponentModel;
using System.Drawing;
using System.Media;
using System.Reflection;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using Bytescout.BarCodeReader;
using TouchlessLib;


namespace ReadFromVideoCamera
{
    public partial class MainForm: Form
    {
		// Scan delay, ms.
		const int SCAN_DELAY = 1500; // scan barcodes every 1.5 sec

		// Touchless SDK library manager (to use it you should have TouchlessLib.dll referenced and WebCamLib.dll in the build output directory)
	    readonly TouchlessMgr _touchlessLibManager;

        // Background thread for barcode scanning
        readonly BackgroundWorker _backgroundWorker = new BackgroundWorker();
		// Synchronization event
	    readonly AutoResetEvent _synchronizationEvent = new AutoResetEvent(false);
        
		// Form constructor
		public MainForm()
        {
            InitializeComponent();

            // Create Touchless library manager
            _touchlessLibManager = new TouchlessMgr();

			// Setup background worker
            _backgroundWorker.WorkerSupportsCancellation = true;
			_backgroundWorker.DoWork += BackgroundWorker_DoWork;
			_backgroundWorker.RunWorkerCompleted += BackgroundWorker_RunWorkerCompleted;
		}

	    // On form loading 
        private void Form_Load(object sender, EventArgs e)
        {
            // Fill devices combobox with available video cameras
            foreach (Camera camera in _touchlessLibManager.Cameras)
                cmbCamera.Items.Add(camera);

            // Select the first available camera. See also cmbCamera_SelectedIndexChanged event handler.
	        if (_touchlessLibManager.Cameras.Count > 0)
		        cmbCamera.SelectedItem = _touchlessLibManager.Cameras[0];
	        else
		        MessageBox.Show("No video camera available. Please connect the camera.");

	        // Populate barcode types combobox
            PopulateBarcodeTypesCombobox();
			// Select some default barcode type
			cmbBarcodeType.SelectedItem = "QRCode";
        }

	    protected void PopulateBarcodeTypesCombobox()
	    {
		    cmbBarcodeType.Items.Clear();

		    foreach (PropertyInfo propertyInfo in typeof(BarcodeTypeSelector).GetProperties())
			    cmbBarcodeType.Items.Add(propertyInfo.Name);
	    }
		
		// On camera selected
        private void cmbCamera_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (_touchlessLibManager.CurrentCamera != null)
                _touchlessLibManager.CurrentCamera.OnImageCaptured -= CurrentCamera_OnImageCaptured;

			if (cmbCamera.SelectedIndex != -1)
			{
				Camera camera = _touchlessLibManager.Cameras[cmbCamera.SelectedIndex];

				if (camera != null)
				{
					// Set camera output image dimensions
					camera.CaptureWidth = int.Parse(tbCameraWidth.Text);
					camera.CaptureHeight = int.Parse(tbCameraHeight.Text);

					camera.OnImageCaptured += CurrentCamera_OnImageCaptured;

					// Select the camera
					_touchlessLibManager.CurrentCamera = camera;
				}
			}
        }

		private void btnUpdateCameraImageDimensions_Click(object sender, EventArgs e)
        {
            if (_touchlessLibManager.CurrentCamera != null)
            {
                // Update camera's output image dimensions
                _touchlessLibManager.CurrentCamera.CaptureWidth = int.Parse(tbCameraWidth.Text);
                _touchlessLibManager.CurrentCamera.CaptureHeight = int.Parse(tbCameraHeight.Text);
            }
        }

        public void StartDecoding()
        {
            if (cmbCamera.SelectedIndex == -1)
                return;

            // Clear the output text box
            rtbFoundBarcodes.Clear();

            // Check if we have camera selected
            if (cmbCamera.SelectedIndex != -1)
            {
				// Start the decoding in the background thread
	            BarcodeTypeSelector barcodeTypesToFind = GetBarcodeTypeFromCombobox();
	            _backgroundWorker.RunWorkerAsync(barcodeTypesToFind);

				UpdateControls(true);
			}
			else
            {
                MessageBox.Show("Please select the camera first!");
            }
        }

        private void StopDecoding()
        {
	        _backgroundWorker.CancelAsync();

			// Wait until BackgroundWorker finished
	        if (_backgroundWorker.IsBusy)
		        _synchronizationEvent.WaitOne();

	        UpdateControls(false);
        }

	    void UpdateControls(bool started)
	    {
		    if (started)
		    {
				btnStart.Enabled = false;
				btnStop.Enabled = true;
				cmbBarcodeType.Enabled = false;
				cmbCamera.Enabled = false;
			    tbCameraHeight.Enabled = false;
			    tbCameraWidth.Enabled = false;
			    btnUpdateCameraImageDimensions.Enabled = false;
			    cbStopOnFirstBarcode.Enabled = false;
			    lblScanning.Visible = true;
			    lblScanning.Text = "Scanning...";
		    }
		    else
		    {
				btnStart.Enabled = true;
				btnStop.Enabled = false;
				cmbBarcodeType.Enabled = true;
				cmbCamera.Enabled = true;
				cbStopOnFirstBarcode.Enabled = true;
				tbCameraHeight.Enabled = true;
				tbCameraWidth.Enabled = true;
				btnUpdateCameraImageDimensions.Enabled = true;
				lblScanning.Visible = true;
			}
	    }

        void CurrentCamera_OnImageCaptured(object sender, CameraEventArgs e)
        {
			pictureBoxPreview.Image = e.Image;
        }

	    private void btnStart_Click(object sender, EventArgs e)
        {
            StartDecoding();
        }

        private void btnStop_Click(object sender, EventArgs e)
        {
            StopDecoding();
        }

        // Background thread procedure used by BackgroundWorker
		public void BackgroundWorker_DoWork(object sender, DoWorkEventArgs e)
		{
			BackgroundWorker worker = (BackgroundWorker) sender;
			BarcodeTypeSelector barcodeTypesToFind = (BarcodeTypeSelector) e.Argument;

            // Create and setup barcode reader instance
			using (Reader reader = new Reader())
			{
				reader.RegistrationName = "demo";
				reader.RegistrationKey = "demo";

				reader.BarcodeTypesToFind = barcodeTypesToFind;

				// Work while not canceled
				while (true)
				{
					// Check cancellation
					if (worker.CancellationPending)
					{
						e.Cancel = true;
						_synchronizationEvent.Set();
						return;
					}

					// Get image from camera by invoking method from UI thread
					Bitmap bitmap = (Bitmap) Invoke(new GetCameraImageDelegate(GetCameraImage));
					if (bitmap == null)
					{
						e.Result = null;
						return;
					}

					/* -----------------------------------------------------------------------
					NOTE: We can read barcodes from specific page to increase performance.
					For sample please refer to "Decoding barcodes from PDF by pages" program.
					----------------------------------------------------------------------- */

					// Search the image for barcodes
					FoundBarcode[] result = reader.ReadFrom(bitmap);

					// Update UI asynchronously
					BeginInvoke(new Action<FoundBarcode[]>(UpdateStatus), new object[] { result });

					// Pause
					Thread.Sleep(SCAN_DELAY);
				}
			}
		}

		delegate Bitmap GetCameraImageDelegate();

	    Bitmap GetCameraImage()
	    {
			if (!IsDisposed && !Disposing && _touchlessLibManager.CurrentCamera != null)
				return _touchlessLibManager.CurrentCamera.GetCurrentImage();

		    return null;
	    }

		// Update UI with found barcodes information
		void UpdateStatus(FoundBarcode[] foundBarcodes)
	    {
			if (foundBarcodes != null && foundBarcodes.Length > 0)
			{
				// Play sound if we found any barcode
				SystemSounds.Beep.Play();

				StringBuilder stringBuilder = new StringBuilder();

				stringBuilder.AppendFormat("Time: {0:HH:mm:ss:tt}", DateTime.Now);
				stringBuilder.AppendLine();

				// Display found barcodes in the output text box
				foreach (FoundBarcode barcode in foundBarcodes)
				{
					stringBuilder.AppendFormat("Found barcode: {0} {1}", barcode.Type, barcode.Value);
					stringBuilder.AppendLine();
				}

				rtbFoundBarcodes.Text = stringBuilder.ToString();

				// Update status text with number of found barcodes
				lblFoundBarcodes.Text = string.Format("Found {0} barcodes:", foundBarcodes.Length);
			}

			// Make "Scanning..." label flicker.
			lblScanning.Visible = !lblScanning.Visible;
			lblScanning.Refresh();

			// Check if we need to stop on first barcode found
			if (cbStopOnFirstBarcode.Checked && foundBarcodes != null && foundBarcodes.Length > 0)
			{
				StopDecoding();
			}
		}

		// Background thread is finished
	    private void BackgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
	    {
			// Update UI asynchronously
			BeginInvoke(new Action<RunWorkerCompletedEventArgs>(OnBackgroundWorkerFinished), new object[] { e });
	    }

	    void OnBackgroundWorkerFinished(RunWorkerCompletedEventArgs completedEventArgs)
	    {
			if (completedEventArgs.Cancelled)
			{
				lblScanning.Text = "Stopped";
			}
			else if (completedEventArgs.Error != null)
			{
				lblScanning.Text = "Error: " + completedEventArgs.Error.Message;
			}
			else
			{
				lblScanning.Text = "Done!";
			}

			UpdateControls(false);
		}

		// Gets selected barcode type
		private BarcodeTypeSelector GetBarcodeTypeFromCombobox()
		{
			BarcodeTypeSelector result = new BarcodeTypeSelector();

			string selectedBarcodeTypeName = (string) cmbBarcodeType.SelectedItem;

	        PropertyInfo propertyInfo = typeof(BarcodeTypeSelector).GetProperty(selectedBarcodeTypeName);
			propertyInfo.SetValue(result, true, null);

			return result;
        }

	    protected override void OnClosing(CancelEventArgs e)
        {
			StopDecoding();
			
			_touchlessLibManager.Dispose();

			base.OnClosing(e);
        }

        private void btnExit_Click(object sender, EventArgs e)
        {
			DialogResult = DialogResult.OK;
            Close();
        }

		private void btnCameraProperties_Click(object sender, EventArgs e)
		{
			try
			{
				if (_touchlessLibManager.CurrentCamera != null)
					_touchlessLibManager.CurrentCamera.ShowPropertiesDialog(Handle);
			}
			catch (Exception exception)
			{
				MessageBox.Show(exception.Message);
			}
		}
    }
}

    

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Data Extraction Suite Home Page

Explore ByteScout Data Extraction Suite Documentation

Explore Samples

Sign Up for ByteScout Data Extraction Suite Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

Program.cs

      
using System;
using System.Windows.Forms;

namespace ReadFromVideoCamera
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [MTAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);

            MainForm dlg = new MainForm();
            dlg.ShowDialog();
        }
    }
}

    

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Data Extraction Suite Home Page

Explore ByteScout Data Extraction Suite Documentation

Explore Samples

Sign Up for ByteScout Data Extraction Suite Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Data Extraction Suite Home Page

Explore ByteScout Data Extraction Suite Documentation

Explore Samples

Sign Up for ByteScout Data Extraction Suite Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples