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Posted 7 Nov 2011

How to Read Barcodes from Images using LEADTOOLS

, 7 Jan 2013
In this article, we will create a simple application that loads an image and reads its barcodes. Try it out for yourself by downloading a fully functional evaluation SDK from the links provided below the tutorial.

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´╗┐namespace LEADTOOLSBarcodeTutorial
   partial class Form1
      /// <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))

      #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.btnLoad = new System.Windows.Forms.Button();
         this.btnRead = new System.Windows.Forms.Button();
         this.rasterImageViewer1 = new Leadtools.WinForms.RasterImageViewer();
         this.txtResults = new System.Windows.Forms.TextBox();
         // btnLoad
         this.btnLoad.Location = new System.Drawing.Point(12, 12);
         this.btnLoad.Name = "btnLoad";
         this.btnLoad.Size = new System.Drawing.Size(90, 23);
         this.btnLoad.TabIndex = 0;
         this.btnLoad.Text = "Load Image";
         this.btnLoad.UseVisualStyleBackColor = true;
         this.btnLoad.Click += new System.EventHandler(this.btnLoad_Click);
         // btnRead
         this.btnRead.Location = new System.Drawing.Point(108, 12);
         this.btnRead.Name = "btnRead";
         this.btnRead.Size = new System.Drawing.Size(90, 23);
         this.btnRead.TabIndex = 1;
         this.btnRead.Text = "Read Barcodes";
         this.btnRead.UseVisualStyleBackColor = true;
         this.btnRead.Click += new System.EventHandler(this.btnRead_Click);
         // rasterImageViewer1
         this.rasterImageViewer1.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.rasterImageViewer1.Location = new System.Drawing.Point(12, 41);
         this.rasterImageViewer1.Name = "rasterImageViewer1";
         this.rasterImageViewer1.Size = new System.Drawing.Size(414, 472);
         this.rasterImageViewer1.SizeMode = Leadtools.RasterPaintSizeMode.Fit;
         this.rasterImageViewer1.TabIndex = 2;
         // txtResults
         this.txtResults.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                     | System.Windows.Forms.AnchorStyles.Right)));
         this.txtResults.Location = new System.Drawing.Point(432, 41);
         this.txtResults.Multiline = true;
         this.txtResults.Name = "txtResults";
         this.txtResults.ReadOnly = true;
         this.txtResults.Size = new System.Drawing.Size(190, 472);
         this.txtResults.TabIndex = 3;
         // Form1
         this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
         this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
         this.ClientSize = new System.Drawing.Size(634, 525);
         this.Name = "Form1";
         this.Text = "LEADTOOLSBarcodeDemo";



      private System.Windows.Forms.Button btnLoad;
      private System.Windows.Forms.Button btnRead;
      private Leadtools.WinForms.RasterImageViewer rasterImageViewer1;
      private System.Windows.Forms.TextBox txtResults;

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About the Author

Help desk / Support LEAD Technologies, Inc.
United States United States
Since 1990, LEAD has established itself as the world's leading provider of software development toolkits for document, medical, multimedia, raster and vector imaging. LEAD's flagship product, LEADTOOLS, holds the top position in every major country throughout the world and boasts a healthy, diverse customer base and strong list of corporate partners including some of the largest and most influential organizations from around the globe. For more information, contact or
Group type: Organisation (No members)

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