How to read multiple barcodes from image using C#?

Creating an ASP.NET web app with multiple barcodes scanning feature is an easy and straightforward task using C# Barcode Reader library. First build a new ASP.NET web project using Visual Studio, add barcode reader dll or nuget package to the project reference. Now you can start to scan and read multiple barcodes from a single image file using method BarcodeScanner.ScanInDetails() in C#.

Using OnBarcode C# Barcode Scanner API, you can read multi-barcode from a single PNG image file through method BarcodeScanner.ScanInDetails(), pass the PNG image file path, and specified mutliple barcode formats in BarcodeType as the parameters using C#.

Besides PNG image format, you can also scan and recognize multiple barcodes from bitmap, gif, jpeg raster image formats, and multi-page tiff and PDF files in C#.

To quickly scan and read all barcodes with different barcode formats from a bitmap image in C#, we recommend you to provide the all target barcode formats in the method ScanInDetails. Do not provide the parameter BarcodeType.All. Using BarcodeType.All, the barcode library will try to scan and match all supported barcode types, it will consume more scanning and reading time.

After scanning and verifying multiple barcodes using barcode library, the detailed barcode results are stored in BarcodeDetail array objects in C#. You can quickly use a for loop to explore and access each individual scanned and verified barcode information, including barcode value, barcode type, barcode position in the image, and other useful information.

No. Method ScanSingleBarcode will return no more than 1 barcode from the scanned image file in C#. If you want to read all barcodes from a single image file, you need use method Scan or ScanInDetails. However using ScanSingleBarcode method will improve the barcode reading speed.

If there is no more than one barcode in the image, you'd better use the method ScanSingleBarcode to reduce the barcode reading time. The barcode reader library will stop scanning the remaining image area after detecting and verifying the scanned barcode. It will improve the single barcode reading speed.

Yes. You can use BarcodeType.All to scan and read all barcode library supported barcode formats in C#. However if the barcode image quality is poor, certain barcode formats will get wrong results. We recommend to list all target barcode formats to scan a low quality barcode image file using barcode reader components.

You can provide the parameter BarcodeType.All to multiple barcodes scanning method. It will scan and detect all barcode library supported barcode formats in C# projects.

OnBarcode C# Barcode Reader library includes multiple methods and scanning configurations to improve the barcode reading performance during multiple barcodes recognition in C# project.

You can configure and apply multi-barcode scanning directions, scanning step intervals, specified scanning image regions, support rotated barcode reading, multi-thread and async barcode scanning to enhance the barcode reading performance. You can also apply the image filter options to improve the barcode detection ratio in C# application.