PDF417 barcode scanner SDK for .NET

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using GdPictureImaging gdpictureImaging = new GdPictureImaging();
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// Select the image to process.
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int imageID = gdpictureImaging.CreateGdPictureImageFromFile(@"C:\temp\source.png");
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// Scan the barcodes.
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gdpictureImaging.BarcodePDF417ReaderDoScan(imageID);
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// Determine the number of scanned barcodes.
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int barcodeCount = gdpictureImaging.BarcodePDF417ReaderGetBarcodeCount();
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string content = "";
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if (barcodeCount > 0)
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{
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    content = "Number of barcodes scanned: " + barcodeCount.ToString();
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    // Save the value of each barcode.
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    for (int i = 1; i <= barcodeCount; i++)
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    {
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        content += $"\nBarcode Number: {i} Value: {gdpictureImaging.BarcodePDF417ReaderGetBarcodeValue(i)}";
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    }
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}
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// Write the values to the console.
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Console.WriteLine(content);
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// Release unnecessary resources.
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gdpictureImaging.BarcodePDF417ReaderClear();
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gdpictureImaging.ReleaseGdPictureImage(imageID);

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Using gdpictureImaging As GdPictureImaging = New GdPictureImaging()
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    ' Select the image to process.
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    Dim imageID As Integer = gdpictureImaging.CreateGdPictureImageFromFile("C:\temp\source.png")
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    ' Scan the barcodes.
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    gdpictureImaging.BarcodePDF417ReaderDoScan(imageID)
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    ' Determine the number of scanned barcodes.
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    Dim barcodeCount As Integer = gdpictureImaging.BarcodePDF417ReaderGetBarcodeCount()
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    Dim content = ""
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    If barcodeCount > 0 Then
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        content = "Number of barcodes scanned: " & barcodeCount.ToString()
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        ' Save the value of each barcode.
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        For i = 1 To barcodeCount
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            content = content & vbLf & "Barcode Number: " & i.ToString() & "    Value: " & gdpictureImaging.BarcodePDF417ReaderGetBarcodeValue(i).ToString()
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        Next
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    End If
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    ' Write the values to the console.
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    Console.WriteLine(content);
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    ' Release unnecessary resources.
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    gdpictureImaging.BarcodePDF417ReaderClear()
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    gdpictureImaging.ReleaseGdPictureImage(imageID)
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End Using