在ASP.NET Core Web 应用程序中生成条形码

using IronBarCode;

Imports IronBarCode

using IronBarCode;
using Microsoft.AspNetCore.Mvc;

public class BarcodeController : Controller
{
    public IActionResult GenerateBarcode(string data)
    {
        // Generate barcode from input data
        GeneratedBarcode barcode = BarcodeWriter.CreateBarcode(
            data,
            BarcodeWriterEncoding.Code128);
        barcode.ResizeTo(400, 120);
        barcode.AddBarcodeValueTextBelowBarcode();
        // Return as image for display in browser
        byte[] barcodeBytes = barcode.ToPngBinaryData();
        return File(barcodeBytes, "image/png");
    }
}

Imports IronBarCode
Imports Microsoft.AspNetCore.Mvc

Public Class BarcodeController
    Inherits Controller

    Public Function GenerateBarcode(data As String) As IActionResult
        ' Generate barcode from input data
        Dim barcode As GeneratedBarcode = BarcodeWriter.CreateBarcode(data, BarcodeWriterEncoding.Code128)
        barcode.ResizeTo(400, 120)
        barcode.AddBarcodeValueTextBelowBarcode()
        ' Return as image for display in browser
        Dim barcodeBytes As Byte() = barcode.ToPngBinaryData()
        Return File(barcodeBytes, "image/png")
    End Function
End Class

GeneratedBarcode styledBarcode = BarcodeWriter.CreateBarcode(
    "STYLED-2024",
    BarcodeWriterEncoding.Code128);
// Apply styling
styledBarcode.ResizeTo(450, 150);
styledBarcode.SetMargins(20);
styledBarcode.ChangeBarCodeColor(IronSoftware.Drawing.Color.DarkBlue);
styledBarcode.AddAnnotationTextAboveBarcode("Product ID:");
styledBarcode.AddBarcodeValueTextBelowBarcode();
// Export to multiple formats
styledBarcode.SaveAsPng("styled-barcode.png");
styledBarcode.SaveAsPdf("styled-barcode.pdf");

Dim styledBarcode As GeneratedBarcode = BarcodeWriter.CreateBarcode("STYLED-2024", BarcodeWriterEncoding.Code128)
' Apply styling
styledBarcode.ResizeTo(450, 150)
styledBarcode.SetMargins(20)
styledBarcode.ChangeBarCodeColor(IronSoftware.Drawing.Color.DarkBlue)
styledBarcode.AddAnnotationTextAboveBarcode("Product ID:")
styledBarcode.AddBarcodeValueTextBelowBarcode()
' Export to multiple formats
styledBarcode.SaveAsPng("styled-barcode.png")
styledBarcode.SaveAsPdf("styled-barcode.pdf")

using IronBarCode;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

public class BarcodeScanController : Controller
{
    public IActionResult ScanBarcode(IFormFile uploadedImage)
    {
        using var stream = uploadedImage.OpenReadStream();
        var results = BarcodeReader.Read(stream);
        if (results.Count > 0)
        {
            string decodedValue = results[0].Value;
            return Ok(new { barcode = decodedValue });
        }
        return BadRequest("No barcode detected in image.");
    }
}

Imports IronBarCode
Imports Microsoft.AspNetCore.Http
Imports Microsoft.AspNetCore.Mvc

Public Class BarcodeScanController
    Inherits Controller

    Public Function ScanBarcode(uploadedImage As IFormFile) As IActionResult
        Using stream = uploadedImage.OpenReadStream()
            Dim results = BarcodeReader.Read(stream)
            If results.Count > 0 Then
                Dim decodedValue As String = results(0).Value
                Return Ok(New With {.barcode = decodedValue})
            End If
            Return BadRequest("No barcode detected in image.")
        End Using
    End Function
End Class

GeneratedBarcode barcode = BarcodeWriter.CreateBarcode(
    "SHIP-2024-99471",
    BarcodeWriterEncoding.Code128);
barcode.ResizeTo(500, 150);
barcode.AddAnnotationTextAboveBarcode("Shipping Label");
barcode.AddBarcodeValueTextBelowBarcode();
barcode.SaveAsPdf("shipping-label.pdf");

Dim barcode As GeneratedBarcode = BarcodeWriter.CreateBarcode( _
    "SHIP-2024-99471", _
    BarcodeWriterEncoding.Code128)
barcode.ResizeTo(500, 150)
barcode.AddAnnotationTextAboveBarcode("Shipping Label")
barcode.AddBarcodeValueTextBelowBarcode()
barcode.SaveAsPdf("shipping-label.pdf")

public IActionResult SafeGenerate(string data, string format)
{
    try
    {
        var encoding = Enum.Parse<BarcodeWriterEncoding>(format, true);
        GeneratedBarcode barcode = BarcodeWriter.CreateBarcode(data, encoding);
        return File(barcode.ToPngBinaryData(), "image/png");
    }
    catch (IronBarCodeEncoderException ex)
    {
        return BadRequest($"Encoding error: {ex.Message}");
    }
    catch (ArgumentException ex)
    {
        return BadRequest($"Unknown format: {ex.Message}");
    }
}

Imports System

Public Function SafeGenerate(data As String, format As String) As IActionResult
    Try
        Dim encoding = [Enum].Parse(Of BarcodeWriterEncoding)(format, True)
        Dim barcode As GeneratedBarcode = BarcodeWriter.CreateBarcode(data, encoding)
        Return File(barcode.ToPngBinaryData(), "image/png")
    Catch ex As IronBarCodeEncoderException
        Return BadRequest($"Encoding error: {ex.Message}")
    Catch ex As ArgumentException
        Return BadRequest($"Unknown format: {ex.Message}")
    End Try
End Function