ByteScout Data Extraction Suite – ASP.NET VB – Read barcodes from pdf with barcode reader sdk

Home
/
Articles
/
ByteScout Data Extraction Suite – ASP.NET VB – Read barcodes from pdf with barcode reader sdk

printable version:
ByteScout-Data-Extraction-Suite-ASP-NET-VB-Read-barcodes-from-pdf-with-barcode-reader-sdk.pdf

How to read barcodes from pdf with barcode reader sdk in ASP.NET VB with ByteScout Data Extraction Suite

Continuous learning is a crucial part of computer science and this tutorial shows how to read barcodes from pdf with barcode reader sdk in ASP.NET VB

We made thousands of pre-made source code pieces for easy implementation in your own programming projects. ByteScout Data Extraction Suite can read barcodes from pdf with barcode reader sdk. It can be applied from ASP.NET VB. ByteScout Data Extraction Suite is the bundle that includes three SDK tools for data extraction from PDF, scans, images and from spreadsheets: PDF Extractor SDK, Data Extraction SDK, Barcode Reader SDK.

The following code snippet for ByteScout Data Extraction Suite works best when you need to quickly read barcodes from pdf with barcode reader sdk in your ASP.NET VB application. Simply copy and paste in your ASP.NET VB project or application you and then run your app! If you want to use these ASP.NET VB sample examples in one or many applications then they can be used easily.

If you want to try other source code samples then the free trial version of ByteScout Data Extraction Suite is available for download from our website. Just try other source code samples for ASP.NET VB.

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

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

Default.aspx

      <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebTestSharp._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>Web Barcode Reader Tester (C#)</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        Click browse button to upload a PDF document<br />
        <asp:FileUpload ID="FileUpload1" runat="server" /><br />
        <br />
        <asp:Button id="UploadButton" 
           Text="Upload file"
           OnClick="UploadButton_Click"
           runat="server">
       </asp:Button> 
        <br />
       <br />
        <asp:Label id="UploadStatusLabel" Text="" runat="server"></asp:Label> 
        <br />
        <asp:ListBox ID="ListBox1" runat="server" Visible="False"></asp:ListBox><br />
        <br />
        </div>
    </form>
</body>
</html>

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

Default.aspx.designer.vb

      '------------------------------------------------------------------------------
' <auto-generated>
'     This code was generated by a tool.
'     Runtime Version:2.0.50727.4927
'
'     Changes to this file may cause incorrect behavior and will be lost if
'     the code is regenerated.
' </auto-generated>
'------------------------------------------------------------------------------



''' <summary>
''' _Default class.
''' </summary>
''' <remarks>
''' Auto-generated class.
''' </remarks>
Public Partial Class _Default

	''' <summary>
	''' form1 control.
	''' </summary>
	''' <remarks>
	''' Auto-generated field.
	''' To modify move field declaration from designer file to code-behind file.
	''' </remarks>
	Protected form1 As Global.System.Web.UI.HtmlControls.HtmlForm

	''' <summary>
	''' FileUpload1 control.
	''' </summary>
	''' <remarks>
	''' Auto-generated field.
	''' To modify move field declaration from designer file to code-behind file.
	''' </remarks>
	Protected FileUpload1 As Global.System.Web.UI.WebControls.FileUpload

	''' <summary>
	''' UploadButton control.
	''' </summary>
	''' <remarks>
	''' Auto-generated field.
	''' To modify move field declaration from designer file to code-behind file.
	''' </remarks>
	Protected UploadButton As Global.System.Web.UI.WebControls.Button

	''' <summary>
	''' UploadStatusLabel control.
	''' </summary>
	''' <remarks>
	''' Auto-generated field.
	''' To modify move field declaration from designer file to code-behind file.
	''' </remarks>
	Protected UploadStatusLabel As Global.System.Web.UI.WebControls.Label

	''' <summary>
	''' ListBox1 control.
	''' </summary>
	''' <remarks>
	''' Auto-generated field.
	''' To modify move field declaration from designer file to code-behind file.
	''' </remarks>
	Protected ListBox1 As Global.System.Web.UI.WebControls.ListBox
End Class

ON-PREMISE OFFLINE SDK

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

Default.aspx.vb

      Imports Bytescout.BarCodeReader


Public Partial Class _Default
    Inherits Web.UI.Page

    ' IF YOU SEE TEMPORARY FOLDER ACCESS ERRORS: 

    ' Temporary folder access is required for web application when you use ByteScout SDK in it.
    ' If you are getting errors related to the access to temporary folder like "Access to the path 'C:\Windows\TEMP\... is denied" then you need to add permission for this temporary folder to make ByteScout SDK working on that machine and IIS configuration because ByteScout SDK requires access to temp folder to cache some of its data for more efficient work.

    ' SOLUTION:

    ' If your IIS Application Pool has "Load User Profile" option enabled the IIS provides access to user's temp folder. Check user's temporary folder

    ' If you are running Web Application under an impersonated account or IIS_IUSRS group, IIS may redirect all requests into separate temp folder like "c:\temp\".

    ' In this case
    ' - check the User or User Group your web application is running under
    ' - then add permissions for this User or User Group to read and write into that temp folder (c:\temp or c:\windows\temp\ folder)
    ' - restart your web application and try again

    Protected Sub UploadButton_Click(ByVal sender As Object, ByVal e As EventArgs)
        Dim savePath As String = "\uploads\"

        If FileUpload1.HasFile Then
            Dim fileName As [String] = FileUpload1.FileName
            savePath += fileName
            FileUpload1.SaveAs(Server.MapPath(savePath))

            Dim barcodeReader As New Reader()

            ' Limit search to 1D barcodes only (exclude 2D barcodes to speed up the search).
			' Change to barcodeReader.BarcodeTypesToFind.SetAll() to scan for all supported 1D and 2D barcodes 
			' or select specific type, e.g. barcodeReader.BarcodeTypesToFind.PDF417 = True
			barcodeReader.BarcodeTypesToFind.SetAll1D()
            
            '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)

            UploadStatusLabel.Visible = False
            ListBox1.Items.Clear()
            ListBox1.Visible = True

            ListBox1.Items.Add("Reading barcode(s) from PDF file """ + fileName + """")

            Dim barcodes As FoundBarcode() = barcodeReader.ReadFrom(Server.MapPath(savePath))

            If barcodes.Length = 0 Then
                ListBox1.Items.Add("No barcodes found")
            Else
                For Each barcode As FoundBarcode In barcodes
                    ListBox1.Items.Add(String.Format("Found barcode with type '{0}' and value '{1}' at page {2} at {3}", barcode.Type, barcode.Value, barcode.Page, barcode.Rect.ToString()))
                Next
            End If

        Else
            ' Notify the user that a file was not uploaded.
            UploadStatusLabel.Text = "You did not specify a file to upload."
        End If
    End Sub
End Class

ON-PREMISE OFFLINE SDK

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

Web.config

      <?xml version="1.0"?>
<configuration>
	<appSettings/>
	<connectionStrings/>
	<system.web>
		<!-- 
            Set compilation debug="true" to insert debugging 
            symbols into the compiled page. Because this 
            affects performance, set this value to true only 
            during development.
        -->
		<compilation debug="true" targetFramework="4.0"/>
		<!--
            The <authentication> section enables configuration 
            of the security authentication mode used by 
            ASP.NET to identify an incoming user. 
        -->
		<authentication mode="Windows"/>
		<!--
            The <customErrors> section enables configuration 
            of what to do if/when an unhandled error occurs 
            during the execution of a request. Specifically, 
            it enables developers to configure html error pages 
            to be displayed in place of a error stack trace.

        <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
            <error statusCode="403" redirect="NoAccess.htm" />
            <error statusCode="404" redirect="FileNotFound.htm" />
        </customErrors>
        -->
		<pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"/></system.web>
</configuration>

ON-PREMISE OFFLINE SDK

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

VIDEO

ON-PREMISE OFFLINE SDK

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

printable version:
ByteScout-Data-Extraction-Suite-ASP-NET-VB-Read-barcodes-from-pdf-with-barcode-reader-sdk.pdf

ByteScout Data Extraction Suite – ASP.NET VB – Read barcodes from pdf with barcode reader sdk

How to read barcodes from pdf with barcode reader sdk in ASP.NET VB with ByteScout Data Extraction Suite

Continuous learning is a crucial part of computer science and this tutorial shows how to read barcodes from pdf with barcode reader sdk in ASP.NET VB

Default.aspx

ON-PREMISE OFFLINE SDK

ON-DEMAND REST WEB API

Default.aspx.designer.vb

ON-PREMISE OFFLINE SDK

ON-DEMAND REST WEB API

Default.aspx.vb

ON-PREMISE OFFLINE SDK

ON-DEMAND REST WEB API

Web.config

ON-PREMISE OFFLINE SDK

ON-DEMAND REST WEB API

VIDEO

ON-PREMISE OFFLINE SDK

ON-DEMAND REST WEB API

Tutorials: