Important Update
Sample source code below will show you how to cope with a difficult task like generate barcode in webimage control in VB in ASP.NET. ByteScout Barcode SDK is the fully featured library to generate barcodes. Supports QR Code, Code 39, Code 128, UPC, GS1, GS-128, PDF417, Datamatrix and many other barcode types. Includes various options for barcode generation to ensure output quality, add barcodes to new or existing pdf files and images and you can use it to generate barcode in webimage control in VB with ASP.NET.
This code snippet below for ByteScout Barcode SDK works best when you need to quickly generate barcode in webimage control in VB in your ASP.NET application. Just copy and paste the code into your ASP.NET application’s code and follow the instruction. Detailed tutorials and documentation are available along with installed ByteScout Barcode SDK if you’d like to dive deeper into the topic and the details of the API.
Our website provides trial version of ByteScout Barcode SDK for free. It also includes documentation and source code samples.
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<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Default.aspx.vb" Inherits="VBWebImageTester._Default" %>
<%@ Register Assembly="Bytescout.BarCode" Namespace="Bytescout.BarCode" TagPrefix="cc1" %>
<!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>BarcodeWebImage test page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<cc1:BarcodeWebImage ID="BarcodeWebImage1" runat="server" RenderingHint="SystemDefault"
SmoothingMode="Default" Value="DATA" ForeColor="Black" HorizontalAlignment="Right"
Angle="Degrees0" CaptionPosition="Below" NarrowBarWidth="3" VerticalAlignment="Top"
AddChecksum="False" AddChecksumToCaption="False" AdditionalCaptionPosition="Above"
AdditionalCaptionFont="Arial, 13pt" BackColor="White" BarHeight="50" CaptionFont="Arial, 13pt"
DrawCaption="True" WideToNarrowRatio="3" Symbology="Code128" AdditionalCaption=" ">
</cc1:BarcodeWebImage>
<br />
<br />
If you are using web control in new application you do need to modify the <strong>Web.config
</strong>file in your application's virtual directory (or C:\Inetpub\wwwroot\
if you don't have a separate application):<br />
<br />
For Visual Studio 2005 - 2010 insert the following lines into <strong><system.web></strong>
section of <strong>Web.config</strong>:
<br />
<div class="code">
<span codelanguage="other"><em>
<br />
<httpHandlers><br />
<add verb="*" path="BarcodeHandler.aspx"
type="Bytescout.BarCode.BarcodeHandler, Bytescout.BarCode"/><br />
</httpHandlers></em><br />
</span>
</div>
<br />
For Visual Studio 2012 and later insert the following lines into <strong><system.webServer></strong>
section of <strong>Web.config</strong>:
<br />
<div class="code">
<span codelanguage="other"><em>
<br />
<httpHandlers><br />
<add verb="*" path="BarcodeHandler.aspx"
type="Bytescout.BarCode.BarcodeHandler, Bytescout.BarCode"/><br />
</httpHandlers><br />
<validation validateIntegratedModeConfiguration="false"/></em><br />
</span>
</div>
</div>
</form>
</body>
</html>
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'------------------------------------------------------------------------------
' <auto-generated>
' This code was generated by a tool.
' Runtime Version:2.0.50727.7905
'
' Changes to this file may cause incorrect behavior and will be lost if
' the code is regenerated.
' </auto-generated>
'------------------------------------------------------------------------------
Option Strict Off
Option Explicit On
'''<summary>
'''_Default class.
'''</summary>
'''<remarks>
'''Auto-generated class.
'''</remarks>
Partial Public Class _Default
'''<summary>
'''form1 control.
'''</summary>
'''<remarks>
'''Auto-generated field.
'''To modify move field declaration from designer file to code-behind file.
'''</remarks>
Protected WithEvents form1 As Global.System.Web.UI.HtmlControls.HtmlForm
'''<summary>
'''BarcodeWebImage1 control.
'''</summary>
'''<remarks>
'''Auto-generated field.
'''To modify move field declaration from designer file to code-behind file.
'''</remarks>
Protected WithEvents BarcodeWebImage1 As Global.Bytescout.BarCode.BarcodeWebImage
End Class
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Partial Public Class _Default
Inherits System.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 Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
End Sub
End Class
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<?xml version="1.0"?>
<configuration>
<appSettings/>
<connectionStrings/>
<system.web>
<httpHandlers>
<add verb="*" path="BarcodeHandler.aspx" type="Bytescout.BarCode.BarcodeHandler, Bytescout.BarCode"/>
</httpHandlers>
<!--
Set compilation debug="true" to insert debugging
symbols into the compiled page. Because this
affects performance, set this value to true only
during development.
Visual Basic options:
Set strict="true" to disallow all data type conversions
where data loss can occur.
Set explicit="true" to force declaration of all variables.
-->
<compilation debug="true" strict="false" explicit="true">
<assemblies>
<add assembly="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
</assemblies>
</compilation>
<pages>
<namespaces>
<clear/>
<add namespace="System"/>
<add namespace="System.Collections"/>
<add namespace="System.Collections.Specialized"/>
<add namespace="System.Configuration"/>
<add namespace="System.Text"/>
<add namespace="System.Text.RegularExpressions"/>
<add namespace="System.Web"/>
<add namespace="System.Web.Caching"/>
<add namespace="System.Web.SessionState"/>
<add namespace="System.Web.Security"/>
<add namespace="System.Web.Profile"/>
<add namespace="System.Web.UI"/>
<add namespace="System.Web.UI.WebControls"/>
<add namespace="System.Web.UI.WebControls.WebParts"/>
<add namespace="System.Web.UI.HtmlControls"/>
</namespaces>
</pages>
<!--
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>
-->
</system.web>
<system.webServer>
<handlers>
<add name="BarcodeHandler" verb="*" path="BarcodeHandler.aspx" type="Bytescout.BarCode.BarcodeHandler, Bytescout.BarCode"/>
</handlers>
<validation validateIntegratedModeConfiguration="false"/>
</system.webServer>
</configuration>
60 Day Free Trial or Visit ByteScout Barcode SDK Home Page
Explore ByteScout Barcode SDK Documentation
Explore Samples
Sign Up for ByteScout Barcode SDK Online Training
Get Your API Key
Explore Web API Docs
Explore Web API Samples
60 Day Free Trial or Visit ByteScout Barcode SDK Home Page
Explore ByteScout Barcode SDK Documentation
Explore Samples
Sign Up for ByteScout Barcode SDK Online Training
Get Your API Key
Explore Web API Docs
Explore Web API Samples
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