.NET Barcode Scanner: C# Guide

// Read all barcodes types from bitmap/stream/local file value in C# programming.
public static BarcodeResult[] Scan(Bitmap bitmap);
public static BarcodeResult[] Scan(Stream stream);
public static BarcodeResult[] Scan(string filename);

// Choose a barcode type to read from your C# project image resource in bitmap/stream/local file form.
public static BarcodeResult[] Scan(Bitmap bitmap, BarCodeType barType);
public static BarcodeResult[] Scan(Stream stream, BarCodeType barType);
public static BarcodeResult[] Scan(string filename, BarCodeType barType);

// Read a barcode from bitmap/stream/local image.
// It's suitable when there's only one barcode on image (more accurate).
public static BarcodeResult ScanSingle(Bitmap bitmap);
public static BarcodeResult ScanSingle(Stream stream);
public static BarcodeResult ScanSingle(string filename);

public void ScanAllTypeBarcode(Bitmap bmp)
{
  BarcodeResult[] results = BarCodeScanner.Scan(bmp);
  foreach (BarcodeResult result in results)
  {
    Console.WriteLine(result.BarType.ToString() + "-" + result.Data);
  }
}

public void ScanSpecifiedTypeBarcode(Bitmap bmp)
{
  BarcodeResult[] results = BarCodeScanner.Scan(bmp, BarCodeType.Code128);
  foreach (BarcodeResult result in results)
  {
    Console.WriteLine(result.Data);
  }
}

// This can improve barcode recognition accuracy. It's suitable when there's only one barcode on image.
Bitmap bmp = new Bitmap("YourImagePath");
BarcodeResult barcode = BarCodeScanner.ScanSingle(bmp);
Console.WriteLine("barcode data:{0}.", barcode.Data);