The sample shows steps and algorithm of how to decode damaged QR code and how to make it work in your VB.NET application. What is ByteScout BarCode Reader SDK? It is the SDK for barcode decoding. Can read all popular types from Code 128, GS1, UPC and Code 39 to QR Code, Datamatrix, PDF417. Images, pdf, TIF images and live web camera are supported as input. Designed to handle documents with noise and defects. Includes optional splitter and merger for pdf and tiff based on barcodes. Batch mode is optimized for high performance with multiple threads. Decoded values can be exported to XML, JSON, CSV or into custom data format. It can help you to decode damaged QR code in your VB.NET application.
This code snippet below for ByteScout BarCode Reader SDK works best when you need to quickly decode damaged QR code in your VB.NET application. In order to implement the functionality, you should copy and paste this code for VB.NET below into your code editor with your app, compile and run your application. You can use these VB.NET sample examples in one or many applications.
You can download free trial version of ByteScout BarCode Reader SDK from our website to see and try many others source code samples for VB.NET.
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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 15
VisualStudioVersion = 15.0.27703.2026
MinimumVisualStudioVersion = 10.0.40219.1
Project("{F184B08F-C81C-45F6-A57F-5ABD9991F28F}") = "DecodeDamagedQRCode", "DecodeDamagedQRCode.vbproj", "{CD0D99A1-96B9-4A05-AE33-71A5F816D282}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{CD0D99A1-96B9-4A05-AE33-71A5F816D282}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{CD0D99A1-96B9-4A05-AE33-71A5F816D282}.Debug|Any CPU.Build.0 = Debug|Any CPU
{CD0D99A1-96B9-4A05-AE33-71A5F816D282}.Release|Any CPU.ActiveCfg = Release|Any CPU
{CD0D99A1-96B9-4A05-AE33-71A5F816D282}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {C7A3FAEC-E77D-46C3-8F22-0F76C2FBC484}
EndGlobalSection
EndGlobal
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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
<ProjectGuid>{CD0D99A1-96B9-4A05-AE33-71A5F816D282}</ProjectGuid>
<OutputType>Exe</OutputType>
<StartupObject>DecodeDamagedQRCode.Program</StartupObject>
<RootNamespace>DecodeDamagedQRCode</RootNamespace>
<AssemblyName>DecodeDamagedQRCode</AssemblyName>
<FileAlignment>512</FileAlignment>
<MyType>Console</MyType>
<TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
<PlatformTarget>AnyCPU</PlatformTarget>
<DebugSymbols>true</DebugSymbols>
<DebugType>full</DebugType>
<DefineDebug>true</DefineDebug>
<DefineTrace>true</DefineTrace>
<OutputPath>bin\Debug\</OutputPath>
<NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
<PlatformTarget>AnyCPU</PlatformTarget>
<DebugType>pdbonly</DebugType>
<DefineDebug>false</DefineDebug>
<DefineTrace>true</DefineTrace>
<Optimize>true</Optimize>
<OutputPath>bin\Release\</OutputPath>
<NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
</PropertyGroup>
<PropertyGroup>
<OptionExplicit>On</OptionExplicit>
</PropertyGroup>
<PropertyGroup>
<OptionCompare>Binary</OptionCompare>
</PropertyGroup>
<PropertyGroup>
<OptionStrict>Off</OptionStrict>
</PropertyGroup>
<PropertyGroup>
<OptionInfer>On</OptionInfer>
</PropertyGroup>
<ItemGroup>
<Reference Include="Bytescout.BarCodeReader, Version=10.2.0.1799, Culture=neutral, PublicKeyToken=f7dd1bd9d40a50eb, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>c:\Program Files\Bytescout BarCode Reader SDK\net2.00\Bytescout.BarCodeReader.dll</HintPath>
</Reference>
<Reference Include="System" />
<Reference Include="System.Data" />
<Reference Include="System.Deployment" />
<Reference Include="System.Drawing" />
<Reference Include="System.Xml" />
</ItemGroup>
<ItemGroup>
<Import Include="Microsoft.VisualBasic" />
<Import Include="System" />
<Import Include="System.Collections" />
<Import Include="System.Collections.Generic" />
<Import Include="System.Data" />
<Import Include="System.Diagnostics" />
</ItemGroup>
<ItemGroup>
<Compile Include="Program.vb" />
</ItemGroup>
<ItemGroup>
<Content Include="corrupted_barcode_qrcode.png">
<CopyToOutputDirectory>Always</CopyToOutputDirectory>
</Content>
</ItemGroup>
<Import Project="$(MSBuildToolsPath)\Microsoft.VisualBasic.targets" />
</Project>
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Imports Bytescout.BarCodeReader
Module Program
Sub Main()
Try
'Read Barcode Process
Dim reader As Reader = New Reader()
reader.RegistrationKey = "demo"
reader.RegistrationName = "demo"
' Set Barcode type to find
reader.BarcodeTypesToFind.QRCode = True
' -----------------------------------------------------------------------
' NOTE: We can read barcodes from specific page to increase performance .
' For sample please refer to "Decoding barcodes from PDF by pages" program.
' -----------------------------------------------------------------------
' Read barcodes
Dim barcodes() As FoundBarcode = reader.ReadFrom("corrupted_barcode_qrcode.png")
For Each code As FoundBarcode In barcodes
Console.WriteLine("Found barcode with type '{0}' and value '{1}'", code.Type, code.Value)
Next
Catch ex As Exception
Console.WriteLine(ex.Message)
End Try
Console.WriteLine("Press any key to exit...")
Console.ReadLine()
End Sub
End Module
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