
Dynamsoft Barcode ReaderからIronBarcodeへの移行
Dynamsoft Barcode ReaderからIronBarcodeに移行するほとんどの開発者は、Dynamsoftの評判に惹かれて選び、その後カメラ中心のAPIがドキュメント処理のユースケースに合わなかったことが発覚したグループと、ライセンスサーバーの依存性が生産事故を引き起こしたエアギャップやDocker環境での運用しているグループに分かれます。
あなたが最初のグループに属している場合、移行によって外部PDFレンダリングライブラリ、ページごとのレンダリングループ、およびエラーコードライセンスパターンが削除されます。 2番目のグループにいる場合、移行によってDockerまたはVPCの設定からInitLicenseネットワークコール、オフラインライセンスコンテンツバンドルとリフレッシュサイクル、アウトバウンドネットワークポリシーが削除されます。 いずれにせよ、この移行後にはコードベースは短くなる。
このガイドは失うものについて正直です: もしアプリケーションがリアルタイムカメラフレームを処理する場合、DynamsoftのCapture Visionパイプラインはそのワークロードに最適化されており、IronBarcodeは適切な代替ではありません。 この移行ガイドは、サーバー側でのファイル処理、ドキュメントワークフロー、およびライセンスサーバーへのアクセスに問題がある環境を対象としています。
ステップ1: NuGetパッケージを入れ替える
dotnet remove package Dynamsoft.DotNet.BarcodeReader.Bundle
dotnet add package BarCode
プロジェクトにDynamsoft専用のPDFレンダリングライブラリ(最も一般的なのはPdfiumViewer)が追加されている場合は、それも削除できます。
# Remove if added only for Dynamsoft PDF support
dotnet remove package PdfiumViewer
dotnet remove package PdfiumViewer.Native.x86_64.v8-xfa
ステップ2:ライセンス初期化の置き換え
ここで最も直接的な簡素化が実現する。 Dynamsoftのパターンでは、起動時に毎回エラーコードのチェックと例外処理を行う必要があります。
以前 - Dynamsoft:
using Dynamsoft.License;
using Dynamsoft.Core;
// Must run before any barcode operations
int errorCode = LicenseManager.InitLicense("YOUR-DYNAMSOFT-KEY", out string errorMsg);
if (errorCode != (int)EnumErrorCode.EC_OK)
throw new InvalidOperationException($"License validation failed [{errorCode}]: {errorMsg}");Imports Dynamsoft.License
Imports Dynamsoft.Core
' Must run before any barcode operations
Dim errorCode As Integer = LicenseManager.InitLicense("YOUR-DYNAMSOFT-KEY", errorMsg)
If errorCode <> CType(EnumErrorCode.EC_OK, Integer) Then
Throw New InvalidOperationException($"License validation failed [{errorCode}]: {errorMsg}")
End IfImports Dynamsoft.License
Imports Dynamsoft.Core
' Must run before any barcode operations
Dim errorCode As Integer = LicenseManager.InitLicense("YOUR-DYNAMSOFT-KEY", errorMsg)
If errorCode <> CType(EnumErrorCode.EC_OK, Integer) Then
Throw New InvalidOperationException($"License validation failed [{errorCode}]: {errorMsg}")
End If後 - IronBarcode:
// NuGet: dotnet add package BarCode
using IronBarCode;
// Local validation — no network call, no error code
IronBarCode.License.LicenseKey = "YOUR-LICENSE-KEY";// NuGet: dotnet add package BarCode
using IronBarCode;
// Local validation — no network call, no error code
IronBarCode.License.LicenseKey = "YOUR-LICENSE-KEY";Imports IronBarCode
' Local validation — no network call, no error code
IronBarCode.License.LicenseKey = "YOUR-LICENSE-KEY"Imports IronBarCode
' Local validation — no network call, no error code
IronBarCode.License.LicenseKey = "YOUR-LICENSE-KEY"ASP.NET Coreアプリケーションでは、Program.csを追加します。
IronBarCode.License.LicenseKey = Environment.GetEnvironmentVariable("IRONBARCODE_KEY")
?? "YOUR-LICENSE-KEY";IronBarCode.License.LicenseKey = Environment.GetEnvironmentVariable("IRONBARCODE_KEY")
?? "YOUR-LICENSE-KEY";Imports IronBarCode
IronBarCode.License.LicenseKey = If(Environment.GetEnvironmentVariable("IRONBARCODE_KEY"), "YOUR-LICENSE-KEY")Imports IronBarCode
IronBarCode.License.LicenseKey = If(Environment.GetEnvironmentVariable("IRONBARCODE_KEY"), "YOUR-LICENSE-KEY")DockerまたはKubernetes環境では、デプロイマニフェストにIRONBARCODE_KEY環境変数を設定します。アウトバウンドネットワークルールは不要です。
ステップ3:名前空間インポートの置換
すべてのソースファイルに対して検索と置換を行う:
grep -r "using Dynamsoft\." --include="*.cs" .
各出現箇所を置換します。
// Before
using Dynamsoft.CVR;
using Dynamsoft.DBR;
using Dynamsoft.License;
using Dynamsoft.Core;
// After
using IronBarCode;// Before
using Dynamsoft.CVR;
using Dynamsoft.DBR;
using Dynamsoft.License;
using Dynamsoft.Core;
// After
using IronBarCode;Imports IronBarCodeImports IronBarCodeコード移行の例
基本的なファイル読み取り
最も基本的な操作は、画像ファイルからバーコードを読み取ることである。
以前 - Dynamsoft:
using Dynamsoft.CVR;
using Dynamsoft.DBR;
public string ReadBarcodeFromFile(CaptureVisionRouter router, string imagePath)
{
CapturedResult result = router.Capture(imagePath, PresetTemplate.PT_READ_BARCODES);
BarcodeResultItem[] items = result.GetDecodedBarcodesResult()?.GetItems();
if (items == null || items.Length == 0)
return null;
return items[0].GetText();
}using Dynamsoft.CVR;
using Dynamsoft.DBR;
public string ReadBarcodeFromFile(CaptureVisionRouter router, string imagePath)
{
CapturedResult result = router.Capture(imagePath, PresetTemplate.PT_READ_BARCODES);
BarcodeResultItem[] items = result.GetDecodedBarcodesResult()?.GetItems();
if (items == null || items.Length == 0)
return null;
return items[0].GetText();
}Imports Dynamsoft.CVR
Imports Dynamsoft.DBR
Public Function ReadBarcodeFromFile(router As CaptureVisionRouter, imagePath As String) As String
Dim result As CapturedResult = router.Capture(imagePath, PresetTemplate.PT_READ_BARCODES)
Dim items As BarcodeResultItem() = result.GetDecodedBarcodesResult()?.GetItems()
If items Is Nothing OrElse items.Length = 0 Then
Return Nothing
End If
Return items(0).GetText()
End FunctionImports Dynamsoft.CVR
Imports Dynamsoft.DBR
Public Function ReadBarcodeFromFile(router As CaptureVisionRouter, imagePath As String) As String
Dim result As CapturedResult = router.Capture(imagePath, PresetTemplate.PT_READ_BARCODES)
Dim items As BarcodeResultItem() = result.GetDecodedBarcodesResult()?.GetItems()
If items Is Nothing OrElse items.Length = 0 Then
Return Nothing
End If
Return items(0).GetText()
End Function後 - IronBarcode:
// NuGet: dotnet add package BarCode
using IronBarCode;
public string ReadBarcodeFromFile(string imagePath)
{
var results = BarcodeReader.Read(imagePath);
return results?.FirstOrDefault()?.Value;
}// NuGet: dotnet add package BarCode
using IronBarCode;
public string ReadBarcodeFromFile(string imagePath)
{
var results = BarcodeReader.Read(imagePath);
return results?.FirstOrDefault()?.Value;
}Imports IronBarCode
Public Function ReadBarcodeFromFile(imagePath As String) As String
Dim results = BarcodeReader.Read(imagePath)
Return results?.FirstOrDefault()?.Value
End FunctionImports IronBarCode
Public Function ReadBarcodeFromFile(imagePath As String) As String
Dim results = BarcodeReader.Read(imagePath)
Return results?.FirstOrDefault()?.Value
End Functionルーターインスタンスは削除されました。 BarcodeReader.Readは静的です。 .Valueになります。 LINQを使用すると、resultsのnullチェックがよりクリーンになります。
複数のバーコードの読み取り
以前 - Dynamsoft:
using Dynamsoft.CVR;
using Dynamsoft.DBR;
public List<string> ReadAllBarcodes(CaptureVisionRouter router, string imagePath)
{
SimplifiedCaptureVisionSettings settings = router.GetSimplifiedSettings(
PresetTemplate.PT_READ_BARCODES);
settings.BarcodeSettings.ExpectedBarcodesCount = 0; // 0 = find all
router.UpdateSettings(PresetTemplate.PT_READ_BARCODES, settings);
CapturedResult result = router.Capture(imagePath, PresetTemplate.PT_READ_BARCODES);
BarcodeResultItem[] items = result.GetDecodedBarcodesResult()?.GetItems();
var values = new List<string>();
if (items != null)
{
foreach (var item in items)
values.Add(item.GetText());
}
return values;
}using Dynamsoft.CVR;
using Dynamsoft.DBR;
public List<string> ReadAllBarcodes(CaptureVisionRouter router, string imagePath)
{
SimplifiedCaptureVisionSettings settings = router.GetSimplifiedSettings(
PresetTemplate.PT_READ_BARCODES);
settings.BarcodeSettings.ExpectedBarcodesCount = 0; // 0 = find all
router.UpdateSettings(PresetTemplate.PT_READ_BARCODES, settings);
CapturedResult result = router.Capture(imagePath, PresetTemplate.PT_READ_BARCODES);
BarcodeResultItem[] items = result.GetDecodedBarcodesResult()?.GetItems();
var values = new List<string>();
if (items != null)
{
foreach (var item in items)
values.Add(item.GetText());
}
return values;
}Imports Dynamsoft.CVR
Imports Dynamsoft.DBR
Public Function ReadAllBarcodes(router As CaptureVisionRouter, imagePath As String) As List(Of String)
Dim settings As SimplifiedCaptureVisionSettings = router.GetSimplifiedSettings(PresetTemplate.PT_READ_BARCODES)
settings.BarcodeSettings.ExpectedBarcodesCount = 0 ' 0 = find all
router.UpdateSettings(PresetTemplate.PT_READ_BARCODES, settings)
Dim result As CapturedResult = router.Capture(imagePath, PresetTemplate.PT_READ_BARCODES)
Dim items As BarcodeResultItem() = result.GetDecodedBarcodesResult()?.GetItems()
Dim values As New List(Of String)()
If items IsNot Nothing Then
For Each item In items
values.Add(item.GetText())
Next
End If
Return values
End FunctionImports Dynamsoft.CVR
Imports Dynamsoft.DBR
Public Function ReadAllBarcodes(router As CaptureVisionRouter, imagePath As String) As List(Of String)
Dim settings As SimplifiedCaptureVisionSettings = router.GetSimplifiedSettings(PresetTemplate.PT_READ_BARCODES)
settings.BarcodeSettings.ExpectedBarcodesCount = 0 ' 0 = find all
router.UpdateSettings(PresetTemplate.PT_READ_BARCODES, settings)
Dim result As CapturedResult = router.Capture(imagePath, PresetTemplate.PT_READ_BARCODES)
Dim items As BarcodeResultItem() = result.GetDecodedBarcodesResult()?.GetItems()
Dim values As New List(Of String)()
If items IsNot Nothing Then
For Each item In items
values.Add(item.GetText())
Next
End If
Return values
End Function後 - IronBarcode:
using IronBarCode;
public List<string> ReadAllBarcodes(string imagePath)
{
var options = new BarcodeReaderOptions
{
ExpectMultipleBarcodes = true,
MaxParallelThreads = 4
};
return BarcodeReader.Read(imagePath, options)
.Select(r => r.Value)
.ToList();
}using IronBarCode;
public List<string> ReadAllBarcodes(string imagePath)
{
var options = new BarcodeReaderOptions
{
ExpectMultipleBarcodes = true,
MaxParallelThreads = 4
};
return BarcodeReader.Read(imagePath, options)
.Select(r => r.Value)
.ToList();
}Imports IronBarCode
Public Function ReadAllBarcodes(imagePath As String) As List(Of String)
Dim options As New BarcodeReaderOptions With {
.ExpectMultipleBarcodes = True,
.MaxParallelThreads = 4
}
Return BarcodeReader.Read(imagePath, options) _
.Select(Function(r) r.Value) _
.ToList()
End FunctionImports IronBarCode
Public Function ReadAllBarcodes(imagePath As String) As List(Of String)
Dim options As New BarcodeReaderOptions With {
.ExpectMultipleBarcodes = True,
.MaxParallelThreads = 4
}
Return BarcodeReader.Read(imagePath, options) _
.Select(Function(r) r.Value) _
.ToList()
End Functionバイト(メモリ上のイメージ)からの読み込み
以前 - Dynamsoft:
using Dynamsoft.CVR;
using Dynamsoft.Core;
using Dynamsoft.DBR;
// Requires width, height, stride, and pixel format — low-level buffer API
public string ReadFromBuffer(CaptureVisionRouter router, byte[] rawPixels, int width, int height)
{
var imageData = new ImageData
{
Bytes = rawPixels,
Width = width,
Height = height,
Stride = width * 3, // assuming 24bpp RGB
Format = EnumImagePixelFormat.IPF_RGB_888
};
CapturedResult result = router.Capture(imageData, PresetTemplate.PT_READ_BARCODES);
return result.GetDecodedBarcodesResult()?.GetItems()?.FirstOrDefault()?.GetText();
}using Dynamsoft.CVR;
using Dynamsoft.Core;
using Dynamsoft.DBR;
// Requires width, height, stride, and pixel format — low-level buffer API
public string ReadFromBuffer(CaptureVisionRouter router, byte[] rawPixels, int width, int height)
{
var imageData = new ImageData
{
Bytes = rawPixels,
Width = width,
Height = height,
Stride = width * 3, // assuming 24bpp RGB
Format = EnumImagePixelFormat.IPF_RGB_888
};
CapturedResult result = router.Capture(imageData, PresetTemplate.PT_READ_BARCODES);
return result.GetDecodedBarcodesResult()?.GetItems()?.FirstOrDefault()?.GetText();
}Imports Dynamsoft.CVR
Imports Dynamsoft.Core
Imports Dynamsoft.DBR
' Requires width, height, stride, and pixel format — low-level buffer API
Public Function ReadFromBuffer(router As CaptureVisionRouter, rawPixels As Byte(), width As Integer, height As Integer) As String
Dim imageData As New ImageData With {
.Bytes = rawPixels,
.Width = width,
.Height = height,
.Stride = width * 3, ' assuming 24bpp RGB
.Format = EnumImagePixelFormat.IPF_RGB_888
}
Dim result As CapturedResult = router.Capture(imageData, PresetTemplate.PT_READ_BARCODES)
Return result.GetDecodedBarcodesResult()?.GetItems()?.FirstOrDefault()?.GetText()
End FunctionImports Dynamsoft.CVR
Imports Dynamsoft.Core
Imports Dynamsoft.DBR
' Requires width, height, stride, and pixel format — low-level buffer API
Public Function ReadFromBuffer(router As CaptureVisionRouter, rawPixels As Byte(), width As Integer, height As Integer) As String
Dim imageData As New ImageData With {
.Bytes = rawPixels,
.Width = width,
.Height = height,
.Stride = width * 3, ' assuming 24bpp RGB
.Format = EnumImagePixelFormat.IPF_RGB_888
}
Dim result As CapturedResult = router.Capture(imageData, PresetTemplate.PT_READ_BARCODES)
Return result.GetDecodedBarcodesResult()?.GetItems()?.FirstOrDefault()?.GetText()
End Function後 - IronBarcode:
using IronBarCode;
// Pass PNG/JPEG/BMP bytes directly — no pixel format or stride calculation
public string ReadFromImageBytes(byte[] imageBytes)
{
return BarcodeReader.Read(imageBytes)?.FirstOrDefault()?.Value;
}using IronBarCode;
// Pass PNG/JPEG/BMP bytes directly — no pixel format or stride calculation
public string ReadFromImageBytes(byte[] imageBytes)
{
return BarcodeReader.Read(imageBytes)?.FirstOrDefault()?.Value;
}Imports IronBarCode
Public Function ReadFromImageBytes(imageBytes As Byte()) As String
Return BarcodeReader.Read(imageBytes)?.FirstOrDefault()?.Value
End FunctionImports IronBarCode
Public Function ReadFromImageBytes(imageBytes As Byte()) As String
Return BarcodeReader.Read(imageBytes)?.FirstOrDefault()?.Value
End Functionアプリケーションが以前に画像バイトを Dynamsoft 用の生ピクセルバッファに変換していた場合、最初に生ピクセルにデコードすることなく、元のエンコードされた画像バイト (PNG、JPEG、BMP) を直接IronBarcodeに渡すことができます。
PDFバーコード読み取り - レンダリングループの削除
これは通常、移行における最大のコード削減となる。 PdfiumViewerのレンダリングループ全体を削除し、単一の呼び出しに置き換えます。
以前 - DynamsoftとPdfiumViewer:
// Requires: Dynamsoft.DotNet.BarcodeReader.Bundle + PdfiumViewer + PdfiumViewer.Native.*
using Dynamsoft.CVR;
using Dynamsoft.DBR;
using PdfiumViewer;
using System.Drawing.Imaging;
public List<string> ReadBarcodesFromPdf(CaptureVisionRouter router, string pdfPath)
{
var allBarcodes = new List<string>();
using (var pdfDoc = PdfDocument.Load(pdfPath))
{
for (int page = 0; page < pdfDoc.PageCount; page++)
{
using var image = pdfDoc.Render(page, 300, 300, true);
using var ms = new MemoryStream();
image.Save(ms, ImageFormat.Png);
CapturedResult result = router.Capture(ms.ToArray(),
PresetTemplate.PT_READ_BARCODES);
var items = result.GetDecodedBarcodesResult()?.GetItems();
if (items != null)
{
foreach (var item in items)
allBarcodes.Add(item.GetText());
}
}
}
return allBarcodes;
}// Requires: Dynamsoft.DotNet.BarcodeReader.Bundle + PdfiumViewer + PdfiumViewer.Native.*
using Dynamsoft.CVR;
using Dynamsoft.DBR;
using PdfiumViewer;
using System.Drawing.Imaging;
public List<string> ReadBarcodesFromPdf(CaptureVisionRouter router, string pdfPath)
{
var allBarcodes = new List<string>();
using (var pdfDoc = PdfDocument.Load(pdfPath))
{
for (int page = 0; page < pdfDoc.PageCount; page++)
{
using var image = pdfDoc.Render(page, 300, 300, true);
using var ms = new MemoryStream();
image.Save(ms, ImageFormat.Png);
CapturedResult result = router.Capture(ms.ToArray(),
PresetTemplate.PT_READ_BARCODES);
var items = result.GetDecodedBarcodesResult()?.GetItems();
if (items != null)
{
foreach (var item in items)
allBarcodes.Add(item.GetText());
}
}
}
return allBarcodes;
}Imports Dynamsoft.CVR
Imports Dynamsoft.DBR
Imports PdfiumViewer
Imports System.Drawing.Imaging
Public Function ReadBarcodesFromPdf(router As CaptureVisionRouter, pdfPath As String) As List(Of String)
Dim allBarcodes As New List(Of String)()
Using pdfDoc As PdfDocument = PdfDocument.Load(pdfPath)
For page As Integer = 0 To pdfDoc.PageCount - 1
Using image = pdfDoc.Render(page, 300, 300, True)
Using ms As New MemoryStream()
image.Save(ms, ImageFormat.Png)
Dim result As CapturedResult = router.Capture(ms.ToArray(), PresetTemplate.PT_READ_BARCODES)
Dim items = result.GetDecodedBarcodesResult()?.GetItems()
If items IsNot Nothing Then
For Each item In items
allBarcodes.Add(item.GetText())
Next
End If
End Using
End Using
Next
End Using
Return allBarcodes
End FunctionImports Dynamsoft.CVR
Imports Dynamsoft.DBR
Imports PdfiumViewer
Imports System.Drawing.Imaging
Public Function ReadBarcodesFromPdf(router As CaptureVisionRouter, pdfPath As String) As List(Of String)
Dim allBarcodes As New List(Of String)()
Using pdfDoc As PdfDocument = PdfDocument.Load(pdfPath)
For page As Integer = 0 To pdfDoc.PageCount - 1
Using image = pdfDoc.Render(page, 300, 300, True)
Using ms As New MemoryStream()
image.Save(ms, ImageFormat.Png)
Dim result As CapturedResult = router.Capture(ms.ToArray(), PresetTemplate.PT_READ_BARCODES)
Dim items = result.GetDecodedBarcodesResult()?.GetItems()
If items IsNot Nothing Then
For Each item In items
allBarcodes.Add(item.GetText())
Next
End If
End Using
End Using
Next
End Using
Return allBarcodes
End Function後 - IronBarcode:
using IronBarCode;
public List<string> ReadBarcodesFromPdf(string pdfPath)
{
return BarcodeReader.Read(pdfPath)
.Select(r => r.Value)
.ToList();
}using IronBarCode;
public List<string> ReadBarcodesFromPdf(string pdfPath)
{
return BarcodeReader.Read(pdfPath)
.Select(r => r.Value)
.ToList();
}Imports IronBarCode
Public Function ReadBarcodesFromPdf(pdfPath As String) As List(Of String)
Return BarcodeReader.Read(pdfPath) _
.Select(Function(r) r.Value) _
.ToList()
End FunctionImports IronBarCode
Public Function ReadBarcodesFromPdf(pdfPath As String) As List(Of String)
Return BarcodeReader.Read(pdfPath) _
.Select(Function(r) r.Value) _
.ToList()
End Functionページループ、PdfDocument、300DPIレンダーステップ、MemoryStream、およびページごとのCapture呼び出しはすべて消えます。 IronBarcodeはPDFページを内部的に処理します。
PDFからオプション付きで読み込む必要がある場合(高密度または読み取りにくいバーコードの場合):
using IronBarCode;
public List<string> ReadBarcodesFromPdfAccurate(string pdfPath)
{
var options = new BarcodeReaderOptions
{
Speed = ReadingSpeed.Balanced,
ExpectMultipleBarcodes = true
};
return BarcodeReader.Read(pdfPath, options)
.Select(r => r.Value)
.ToList();
}using IronBarCode;
public List<string> ReadBarcodesFromPdfAccurate(string pdfPath)
{
var options = new BarcodeReaderOptions
{
Speed = ReadingSpeed.Balanced,
ExpectMultipleBarcodes = true
};
return BarcodeReader.Read(pdfPath, options)
.Select(r => r.Value)
.ToList();
}Imports IronBarCode
Public Function ReadBarcodesFromPdfAccurate(pdfPath As String) As List(Of String)
Dim options As New BarcodeReaderOptions With {
.Speed = ReadingSpeed.Balanced,
.ExpectMultipleBarcodes = True
}
Return BarcodeReader.Read(pdfPath, options) _
.Select(Function(r) r.Value) _
.ToList()
End FunctionImports IronBarCode
Public Function ReadBarcodesFromPdfAccurate(pdfPath As String) As List(Of String)
Dim options As New BarcodeReaderOptions With {
.Speed = ReadingSpeed.Balanced,
.ExpectMultipleBarcodes = True
}
Return BarcodeReader.Read(pdfPath, options) _
.Select(Function(r) r.Value) _
.ToList()
End Functionオフライン/エアギャップ展開
現在のコードにオフラインライセンスパターンが含まれている場合は、それを完全に削除してください。
以前 - Dynamsoft オフラインライセンス:
using Dynamsoft.License;
using Dynamsoft.Core;
// Dynamsoft offline: fetch license bundle on a connected machine, persist it,
// then replay it on the offline machine via InitLicenseFromLicenseContent.
int errorCode = LicenseManager.InitLicenseFromLicenseContent(
licenseContent,
out string errorMsg);
if (errorCode != (int)EnumErrorCode.EC_OK)
throw new InvalidOperationException($"Offline license failed: {errorMsg}");using Dynamsoft.License;
using Dynamsoft.Core;
// Dynamsoft offline: fetch license bundle on a connected machine, persist it,
// then replay it on the offline machine via InitLicenseFromLicenseContent.
int errorCode = LicenseManager.InitLicenseFromLicenseContent(
licenseContent,
out string errorMsg);
if (errorCode != (int)EnumErrorCode.EC_OK)
throw new InvalidOperationException($"Offline license failed: {errorMsg}");Imports Dynamsoft.License
Imports Dynamsoft.Core
' Dynamsoft offline: fetch license bundle on a connected machine, persist it,
' then replay it on the offline machine via InitLicenseFromLicenseContent.
Dim errorMsg As String
Dim errorCode As Integer = LicenseManager.InitLicenseFromLicenseContent(licenseContent, errorMsg)
If errorCode <> CType(EnumErrorCode.EC_OK, Integer) Then
Throw New InvalidOperationException($"Offline license failed: {errorMsg}")
End IfImports Dynamsoft.License
Imports Dynamsoft.Core
' Dynamsoft offline: fetch license bundle on a connected machine, persist it,
' then replay it on the offline machine via InitLicenseFromLicenseContent.
Dim errorMsg As String
Dim errorCode As Integer = LicenseManager.InitLicenseFromLicenseContent(licenseContent, errorMsg)
If errorCode <> CType(EnumErrorCode.EC_OK, Integer) Then
Throw New InvalidOperationException($"Offline license failed: {errorMsg}")
End If後 - IronBarcode:
// Remove all of the above. Replace with:
IronBarCode.License.LicenseKey = "YOUR-LICENSE-KEY";// Remove all of the above. Replace with:
IronBarCode.License.LicenseKey = "YOUR-LICENSE-KEY";IronBarCode.License.LicenseKey = "YOUR-LICENSE-KEY"IronBarCode.License.LicenseKey = "YOUR-LICENSE-KEY"取得して更新するライセンスコンテンツバンドルはありません。 接続済みマシンのブートストラップステップはありません。キーはローカルでの検証が行われます。
Dockerの設定
以前にDynamsoftのライセンスエンドポイントに向けたアウトバウンドHTTPSを許可するネットワーク送信ルールやプロキシ構成が必要だった場合:
# Before: Docker or Kubernetes egress policy
# Required: Allow outbound HTTPS to Dynamsoft licence endpoints
# After: Remove that egress rule.
# IronBarcode does not require outbound network access for license validation.
# Set license via environment variable
env:
- name: IRONBARCODE_KEY
valueFrom:
secretKeyRef:
name: ironbarcode-license
key: key
インスタンス管理のクリーンアップ
DynamsoftはCaptureVisionRouterを中心に構築されたインスタンスベースのAPIを使用しています。 コードがサービスクラスにルーターインスタンスを作成したり、フィールドイニシャライザーやDI登録に使っていた場合、そのすべてが消えます。
以前 - Dynamsoftインスタンス管理:
using Dynamsoft.CVR;
using Dynamsoft.DBR;
using Dynamsoft.License;
using Dynamsoft.Core;
public class BarcodeService : IDisposable
{
private readonly CaptureVisionRouter _router;
public BarcodeService()
{
int errorCode = LicenseManager.InitLicense("KEY", out string errorMsg);
if (errorCode != (int)EnumErrorCode.EC_OK)
throw new InvalidOperationException(errorMsg);
_router = new CaptureVisionRouter();
var settings = _router.GetSimplifiedSettings(PresetTemplate.PT_READ_BARCODES);
settings.BarcodeSettings.ExpectedBarcodesCount = 0;
_router.UpdateSettings(PresetTemplate.PT_READ_BARCODES, settings);
}
public string[] ReadFile(string path)
{
CapturedResult result = _router.Capture(path, PresetTemplate.PT_READ_BARCODES);
var items = result.GetDecodedBarcodesResult()?.GetItems();
return items?.Select(i => i.GetText()).ToArray() ?? Array.Empty<string>();
}
public void Dispose()
{
_router?.Dispose();
}
}using Dynamsoft.CVR;
using Dynamsoft.DBR;
using Dynamsoft.License;
using Dynamsoft.Core;
public class BarcodeService : IDisposable
{
private readonly CaptureVisionRouter _router;
public BarcodeService()
{
int errorCode = LicenseManager.InitLicense("KEY", out string errorMsg);
if (errorCode != (int)EnumErrorCode.EC_OK)
throw new InvalidOperationException(errorMsg);
_router = new CaptureVisionRouter();
var settings = _router.GetSimplifiedSettings(PresetTemplate.PT_READ_BARCODES);
settings.BarcodeSettings.ExpectedBarcodesCount = 0;
_router.UpdateSettings(PresetTemplate.PT_READ_BARCODES, settings);
}
public string[] ReadFile(string path)
{
CapturedResult result = _router.Capture(path, PresetTemplate.PT_READ_BARCODES);
var items = result.GetDecodedBarcodesResult()?.GetItems();
return items?.Select(i => i.GetText()).ToArray() ?? Array.Empty<string>();
}
public void Dispose()
{
_router?.Dispose();
}
}Imports Dynamsoft.CVR
Imports Dynamsoft.DBR
Imports Dynamsoft.License
Imports Dynamsoft.Core
Public Class BarcodeService
Implements IDisposable
Private ReadOnly _router As CaptureVisionRouter
Public Sub New()
Dim errorCode As Integer = LicenseManager.InitLicense("KEY", errorMsg:=Nothing)
If errorCode <> CType(EnumErrorCode.EC_OK, Integer) Then
Throw New InvalidOperationException(errorMsg)
End If
_router = New CaptureVisionRouter()
Dim settings = _router.GetSimplifiedSettings(PresetTemplate.PT_READ_BARCODES)
settings.BarcodeSettings.ExpectedBarcodesCount = 0
_router.UpdateSettings(PresetTemplate.PT_READ_BARCODES, settings)
End Sub
Public Function ReadFile(path As String) As String()
Dim result As CapturedResult = _router.Capture(path, PresetTemplate.PT_READ_BARCODES)
Dim items = result.GetDecodedBarcodesResult()?.GetItems()
Return If(items?.Select(Function(i) i.GetText()).ToArray(), Array.Empty(Of String)())
End Function
Public Sub Dispose() Implements IDisposable.Dispose
_router?.Dispose()
End Sub
End ClassImports Dynamsoft.CVR
Imports Dynamsoft.DBR
Imports Dynamsoft.License
Imports Dynamsoft.Core
Public Class BarcodeService
Implements IDisposable
Private ReadOnly _router As CaptureVisionRouter
Public Sub New()
Dim errorCode As Integer = LicenseManager.InitLicense("KEY", errorMsg:=Nothing)
If errorCode <> CType(EnumErrorCode.EC_OK, Integer) Then
Throw New InvalidOperationException(errorMsg)
End If
_router = New CaptureVisionRouter()
Dim settings = _router.GetSimplifiedSettings(PresetTemplate.PT_READ_BARCODES)
settings.BarcodeSettings.ExpectedBarcodesCount = 0
_router.UpdateSettings(PresetTemplate.PT_READ_BARCODES, settings)
End Sub
Public Function ReadFile(path As String) As String()
Dim result As CapturedResult = _router.Capture(path, PresetTemplate.PT_READ_BARCODES)
Dim items = result.GetDecodedBarcodesResult()?.GetItems()
Return If(items?.Select(Function(i) i.GetText()).ToArray(), Array.Empty(Of String)())
End Function
Public Sub Dispose() Implements IDisposable.Dispose
_router?.Dispose()
End Sub
End Class後 - IronBarcode静的 API:
// NuGet: dotnet add package BarCode
using IronBarCode;
public class BarcodeService
{
// No constructor initialization — license set once at app startup
// No Dispose — no instance to clean up
public string[] ReadFile(string path)
{
var options = new BarcodeReaderOptions { ExpectMultipleBarcodes = true };
return BarcodeReader.Read(path, options)
.Select(r => r.Value)
.ToArray();
}
}// NuGet: dotnet add package BarCode
using IronBarCode;
public class BarcodeService
{
// No constructor initialization — license set once at app startup
// No Dispose — no instance to clean up
public string[] ReadFile(string path)
{
var options = new BarcodeReaderOptions { ExpectMultipleBarcodes = true };
return BarcodeReader.Read(path, options)
.Select(r => r.Value)
.ToArray();
}
}Imports IronBarCode
Public Class BarcodeService
' No constructor initialization — license set once at app startup
' No Dispose — no instance to clean up
Public Function ReadFile(path As String) As String()
Dim options As New BarcodeReaderOptions With {.ExpectMultipleBarcodes = True}
Return BarcodeReader.Read(path, options) _
.Select(Function(r) r.Value) _
.ToArray()
End Function
End ClassImports IronBarCode
Public Class BarcodeService
' No constructor initialization — license set once at app startup
' No Dispose — no instance to clean up
Public Function ReadFile(path As String) As String()
Dim options As New BarcodeReaderOptions With {.ExpectMultipleBarcodes = True}
Return BarcodeReader.Read(path, options) _
.Select(Function(r) r.Value) _
.ToArray()
End Function
End Classクラスはそのコンストラクタ、_routerフィールドを失います。 このサービスがDIとしてシングルトンあるいはスコープドサービスとして登録されてルーターライフサイクルを管理していた場合、その登録が簡素化されたり、サービスが一連の静的メソッドになることもあります。
読書速度とタイムアウトマッピングの関係
Dynamsoftはミリ秒単位でカメラのフレームレートに最適化されたTimeoutを使用しています。 IronBarcodeはReadingSpeed列挙型を使用します:
| Dynamsoftの設定 | IronBarcode相当品 |
|---|---|
settings.Timeout = 100 (カメラパイプライン) | Speed = ReadingSpeed.Faster |
| タイムアウト時間を短くする(速度を優先する) | Speed = ReadingSpeed.Balanced |
| タイムアウト時間を長くする(精度を優先する) | Speed = ReadingSpeed.Detailed |
| 最高の精度、時間的プレッシャーなし | Speed = ReadingSpeed.ExtremeDetail |
スループットがサブ100ms応答時間よりも重要なほとんどのドキュメント処理ワークフローでは、ReadingSpeed.Balancedが適切なデフォルトです:
var options = new BarcodeReaderOptions
{
Speed = ReadingSpeed.Balanced,
ExpectMultipleBarcodes = true,
MaxParallelThreads = 4
};var options = new BarcodeReaderOptions
{
Speed = ReadingSpeed.Balanced,
ExpectMultipleBarcodes = true,
MaxParallelThreads = 4
};Dim options As New BarcodeReaderOptions With {
.Speed = ReadingSpeed.Balanced,
.ExpectMultipleBarcodes = True,
.MaxParallelThreads = 4
}Dim options As New BarcodeReaderOptions With {
.Speed = ReadingSpeed.Balanced,
.ExpectMultipleBarcodes = True,
.MaxParallelThreads = 4
}よくある移行の問題
BarcodeResultItem.GetText() vs result.Value
アクセッサはメソッドからプロパティに変わります:
// Before
string value = item.GetText();
// After
string value = result.Value;// Before
string value = item.GetText();
// After
string value = result.Value;' Before
Dim value As String = item.GetText()
' After
Dim value As String = result.Value' Before
Dim value As String = item.GetText()
' After
Dim value As String = result.ValueBarcodeResultItem.GetFormatString() vs result.Format
DynamsoftはGetFormatString()を介してフォーマットを文字列として返します。 IronBarcodeはBarcodeEncoding列挙型としてこれを公開します:
// Before
if (item.GetFormatString() == "QR_CODE")
Console.WriteLine("Found QR code");
// After
if (result.Format == BarcodeEncoding.QRCode)
Console.WriteLine("Found QR code");
// For logging without enum comparison — .ToString() works on both
Console.WriteLine($"Format: {result.Format}");// Before
if (item.GetFormatString() == "QR_CODE")
Console.WriteLine("Found QR code");
// After
if (result.Format == BarcodeEncoding.QRCode)
Console.WriteLine("Found QR code");
// For logging without enum comparison — .ToString() works on both
Console.WriteLine($"Format: {result.Format}");' Before
If item.GetFormatString() = "QR_CODE" Then
Console.WriteLine("Found QR code")
End If
' After
If result.Format = BarcodeEncoding.QRCode Then
Console.WriteLine("Found QR code")
End If
' For logging without enum comparison — .ToString() works on both
Console.WriteLine($"Format: {result.Format}")' Before
If item.GetFormatString() = "QR_CODE" Then
Console.WriteLine("Found QR code")
End If
' After
If result.Format = BarcodeEncoding.QRCode Then
Console.WriteLine("Found QR code")
End If
' For logging without enum comparison — .ToString() works on both
Console.WriteLine($"Format: {result.Format}")null 結果と空のコレクション
Dynamsoftのnullを返すことができます。 IronBarcodeは空のコレクションを返します。 nullチェックの更新:
// Before: null check required
CapturedResult result = router.Capture(path, PresetTemplate.PT_READ_BARCODES);
var items = result.GetDecodedBarcodesResult()?.GetItems();
if (items != null && items.Length > 0)
Process(items[0].GetText());
// After: null-safe but also correct to check Count
var results = BarcodeReader.Read(path);
if (results.Any())
Process(results.First().Value);// Before: null check required
CapturedResult result = router.Capture(path, PresetTemplate.PT_READ_BARCODES);
var items = result.GetDecodedBarcodesResult()?.GetItems();
if (items != null && items.Length > 0)
Process(items[0].GetText());
// After: null-safe but also correct to check Count
var results = BarcodeReader.Read(path);
if (results.Any())
Process(results.First().Value);Imports System.Linq
' Before: null check required
Dim result As CapturedResult = router.Capture(path, PresetTemplate.PT_READ_BARCODES)
Dim items = result.GetDecodedBarcodesResult()?.GetItems()
If items IsNot Nothing AndAlso items.Length > 0 Then
Process(items(0).GetText())
End If
' After: null-safe but also correct to check Count
Dim results = BarcodeReader.Read(path)
If results.Any() Then
Process(results.First().Value)
End IfImports System.Linq
' Before: null check required
Dim result As CapturedResult = router.Capture(path, PresetTemplate.PT_READ_BARCODES)
Dim items = result.GetDecodedBarcodesResult()?.GetItems()
If items IsNot Nothing AndAlso items.Length > 0 Then
Process(items(0).GetText())
End If
' After: null-safe but also correct to check Count
Dim results = BarcodeReader.Read(path)
If results.Any() Then
Process(results.First().Value)
End IfSimplifiedCaptureVisionSettings to BarcodeReaderOptions
GetSimplifiedSettings / BarcodeReaderOptionsになります:
// Before
var settings = router.GetSimplifiedSettings(PresetTemplate.PT_READ_BARCODES);
settings.BarcodeSettings.ExpectedBarcodesCount = 0;
settings.Timeout = 500;
router.UpdateSettings(PresetTemplate.PT_READ_BARCODES, settings);
var result = router.Capture(path, PresetTemplate.PT_READ_BARCODES);
// After
var options = new BarcodeReaderOptions
{
Speed = ReadingSpeed.Balanced,
ExpectMultipleBarcodes = true
};
var results = BarcodeReader.Read(path, options);// Before
var settings = router.GetSimplifiedSettings(PresetTemplate.PT_READ_BARCODES);
settings.BarcodeSettings.ExpectedBarcodesCount = 0;
settings.Timeout = 500;
router.UpdateSettings(PresetTemplate.PT_READ_BARCODES, settings);
var result = router.Capture(path, PresetTemplate.PT_READ_BARCODES);
// After
var options = new BarcodeReaderOptions
{
Speed = ReadingSpeed.Balanced,
ExpectMultipleBarcodes = true
};
var results = BarcodeReader.Read(path, options);' Before
Dim settings = router.GetSimplifiedSettings(PresetTemplate.PT_READ_BARCODES)
settings.BarcodeSettings.ExpectedBarcodesCount = 0
settings.Timeout = 500
router.UpdateSettings(PresetTemplate.PT_READ_BARCODES, settings)
Dim result = router.Capture(path, PresetTemplate.PT_READ_BARCODES)
' After
Dim options As New BarcodeReaderOptions With {
.Speed = ReadingSpeed.Balanced,
.ExpectMultipleBarcodes = True
}
Dim results = BarcodeReader.Read(path, options)' Before
Dim settings = router.GetSimplifiedSettings(PresetTemplate.PT_READ_BARCODES)
settings.BarcodeSettings.ExpectedBarcodesCount = 0
settings.Timeout = 500
router.UpdateSettings(PresetTemplate.PT_READ_BARCODES, settings)
Dim result = router.Capture(path, PresetTemplate.PT_READ_BARCODES)
' After
Dim options As New BarcodeReaderOptions With {
.Speed = ReadingSpeed.Balanced,
.ExpectMultipleBarcodes = True
}
Dim results = BarcodeReader.Read(path, options)移行チェックリスト
以下の検索を実行して、更新が必要なすべての Dynamsoft リファレンスを見つけてください。
grep -r "using Dynamsoft\." --include="*.cs" .
grep -r "LicenseManager.InitLicense\|EnumErrorCode\|EC_OK" --include="*.cs" .
grep -r "new CaptureVisionRouter\|router\.Capture\|PresetTemplate" --include="*.cs" .
grep -r "BarcodeResultItem\|GetDecodedBarcodesResult\|GetFormatString" --include="*.cs" .
grep -r "GetSimplifiedSettings\|UpdateSettings\|SimplifiedCaptureVisionSettings" --include="*.cs" .
grep -r "router\.Dispose\|InitLicenseFromLicenseContent" --include="*.cs" .
各試合を順に進めてください。
using Dynamsoft.*→using IronBarCodeLicenseManager.InitLicense(key, out errorMsg)+ エラーチェック →IronBarCode.License.LicenseKey = "key"new CaptureVisionRouter()→ 削除 (静的API、インスタンスなし)router.Capture(path, PresetTemplate.PT_READ_BARCODES)→BarcodeReader.Read(path)router.Capture(imageData, ...)(生のピクセルバッファ) →BarcodeReader.Read(imageBytes)- ページごとのPDFレンダーループ +
router.Capture(pageBytes, ...)→BarcodeReader.Read(pdfPath) BarcodeResultItem.GetText()→result.ValueBarcodeResultItem.GetFormatString()→result.FormatGetSimplifiedSettings(...)+UpdateSettings(...)→new BarcodeReaderOptions { ... }router.Dispose()→ 削除LicenseManager.InitLicenseFromLicenseContent(...)→ 完全に削除 Dynamsoft PDF処理をサポートするためだけにPdfiumViewer NuGetパッケージを追加した場合は、それらを削除してください。- Docker/KubernetesのDynamsoftライセンスエンドポイント向けネットワーク送信ルールを削除
- デプロイメント構成で
IRONBARCODE_KEY環境変数を設定
Curtis Chauは、カールトン大学でコンピュータサイエンスの学士号を取得し、Node.js、TypeScript、JavaScript、およびReactに精通したフロントエンド開発を専門としています。直感的で美しいユーザーインターフェースを作成することに情熱を持ち、Curtisは現代のフレームワークを用いた開発や、構造の良い視覚的に魅力的なマニュアルの作成を楽しんでいます。
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