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The following sample demonstrates how to read barcode from photo image using Bytescout BarCode Reader SDK for .NET

Create new ASP.NET project and add the following control into Default.aspx page: 1) Image control named Image1 and 2) Listbox control named ListBox1;

Please find copy of code for Default.aspx and corresponding Default.aspx.vb(or .cs) file.

C++

Copy

<legacyBold xmlns="http://ddue.schemas.microsoft.com/authoring/2003/5">Default.aspx:</legacyBold>
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="SimpleWebTestSharp._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Simple Web Barcode Reader Tester (C#)</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <div>
            <br />
            <asp:ListBox ID="ListBox1" runat="server"></asp:ListBox><br />
            <br />
            <asp:Image ID="Image1" runat="server" />&nbsp;</div>

    </div>
    </form>
</body>
</html>
        <legacyBold xmlns="http://ddue.schemas.microsoft.com/authoring/2003/5">Default.aspx.cs:</legacyBold>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

using Bytescout.BarCodeReader;

namespace SimpleWebTestSharp
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            Image1.ImageUrl = "BarcodePhoto.jpg";

            Reader reader = new Reader();
            reader.BarcodeTypesToFind.Code39 = true;

            // reader.MediumTrustLevelCompatible = true; // uncomment this line to enable Medium Trust compatible mode (slows down the recognition process as direct image data access is disabled in Medium Trust mode)

            reader.ReadFromFile(Server.MapPath("BarcodePhoto.jpg"));

            foreach (FoundBarcode barcode in reader.FoundBarcodes)
                ListBox1.Items.Add(String.Format("{0} : {1}", barcode.Type, barcode.Value));
        }
    }
}

<legacyBold xmlns="http://ddue.schemas.microsoft.com/authoring/2003/5">Default.aspx:</legacyBold>
        <%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Default.aspx.vb" Inherits="SimpleWebTestVB._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Simple Web Barcode Reader Tester (VB)</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <div>
            <div>
                <br />
                <asp:ListBox ID="ListBox1" runat="server"></asp:ListBox><br />
                <br />
                <asp:Image ID="Image1" runat="server" />&nbsp;</div>
        </div>

    </div>
    </form>
</body>
</html>
        <legacyBold xmlns="http://ddue.schemas.microsoft.com/authoring/2003/5">Default.aspx.vb:</legacyBold>                              
Imports Bytescout.BarCodeReader

Partial Public Class _Default
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Image1.ImageUrl = "BarcodePhoto.jpg"

        Dim reader As New Reader()
        reader.BarcodeTypesToFind.Code39 = True

         ' reader.MediumTrustLevelCompatible = true ' uncomment this line to enable Medium Trust compatible mode (slows down the recognition process as direct image data access is disabled in Medium Trust mode)

        reader.ReadFromFile(Server.MapPath("BarcodePhoto.jpg"))

        For Each barcode As FoundBarcode In reader.FoundBarcodes
            ListBox1.Items.Add([String].Format("{0} : {1}", barcode.Type, barcode.Value))
        Next

    End Sub

End Class