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saifullah khan
NA
335
300.3k
Pass string[] to merge images to pdf ASP.NET
Mar 23 2018 1:40 AM
I'm trying to merg images from a folder to a pdf file. here is my code:
/// <summary>
/// Takes a collection of BMP files and converts them into a PDF document
/// </summary>
/// <param name="bmpFilePaths"></param>
/// <returns></returns>
private
byte
[] CreatePdf(
string
[] bmpFilePaths)
{
using
(var ms =
new
MemoryStream())
{
var document =
new
iTextSharp.text.Document(iTextSharp.text.PageSize.LETTER.Rotate(), 0, 0, 0, 0);
iTextSharp.text.pdf.PdfWriter.GetInstance(document, ms).SetFullCompression();
document.Open();
foreach
(var path
in
bmpFilePaths)
{
var imgStream = GetImageStream(path);
var image = iTextSharp.text.Image.GetInstance(imgStream);
image.ScaleToFit(document.PageSize.Width, document.PageSize.Height);
document.Add(image);
}
document.Close();
return
ms.ToArray();
}
}
/// <summary>
/// Gets the image at the specified path, shrinks it, converts to JPG, and returns as a stream
/// </summary>
/// <param name="imagePath"></param>
/// <returns></returns>
private
Stream GetImageStream(
string
imagePath)
{
var ms =
new
MemoryStream();
using
(var img = Image.FromFile(imagePath))
{
var jpegCodec = ImageCodecInfo.GetImageEncoders()
.Where(x => x.MimeType ==
"image/jpeg"
)
.FirstOrDefault();
var encoderParams =
new
EncoderParameters(1);
encoderParams.Param[0] =
new
EncoderParameter(Encoder.Quality, (
long
)20);
int
dpi = 175;
var thumb = img.GetThumbnailImage((
int
)(11 * dpi), (
int
)(8.5 * dpi),
null
, IntPtr.Zero);
thumb.Save(ms, jpegCodec, encoderParams);
}
ms.Seek(0, SeekOrigin.Begin);
return
ms;
}
The images are in a folder. can somebody please tell me how to pass string[] with the list of images links to CreatePdf(string[] bmpFilesPath) from a button click function.
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