public ActionResult SearchText(IFormCollection collection)
{
// get the PDF file
string pdfFile = m_hostingEnvironment.ContentRootPath + @"\wwwroot" + @"\DemoFiles\Pdf\InputPdf.pdf";
// get the text to search
string textToSearch = collection["textBoxTextToSearch"];
// create the PDF text extractor
PdfTextExtract pdfTextExtract = new PdfTextExtract();
// set a demo serial number
pdfTextExtract.SerialNumber = "YCgJMTAE-BiwJAhIB-EhlWTlBA-UEBRQFBA-U1FOUVJO-WVlZWQ==";
int fromPdfPageNumber = int.Parse(collection["textBoxFromPage"]);
int toPdfPageNumber = collection["textBoxToPage"][0].Length > 0 ? int.Parse(collection["textBoxToPage"]) : 0;
// search the text in PDF document
PdfTextSearchItem[] searchTextInstances = pdfTextExtract.SearchText(pdfFile, textToSearch,
fromPdfPageNumber, toPdfPageNumber, collection["checkBoxMatchCase"].Count > 0, collection["checkBoxMatchWholeWord"].Count > 0);
// load the PDF file to highlight the searched text
PdfDocument pdfDocument = PdfDocument.FromFile(pdfFile);
// set a demo serial number
pdfDocument.SerialNumber = "YCgJMTAE-BiwJAhIB-EhlWTlBA-UEBRQFBA-U1FOUVJO-WVlZWQ==";
// highlight the searched text in PDF document
foreach (PdfTextSearchItem searchTextInstance in searchTextInstances)
{
PdfRectangle pdfRectangle = new PdfRectangle(searchTextInstance.BoundingRectangle);
// set rectangle color and opacity
pdfRectangle.BackColor = Color.Yellow;
pdfRectangle.Opacity = 30;
// highlight the text
pdfDocument.Pages[searchTextInstance.PdfPageNumber - 1].Layout(pdfRectangle);
}
// write the modified PDF document
try
{
// write the PDF document to a memory buffer
byte[] pdfBuffer = pdfDocument.WriteToMemory();
FileResult fileResult = new FileContentResult(pdfBuffer, "application/pdf");
fileResult.FileDownloadName = "SearchText.pdf";
return(fileResult);
}
finally
{
pdfDocument.Close();
}
}
protected void buttonSearchText_Click(object sender, EventArgs e)
{
// get the PDF file
string pdfFile = Server.MapPath("~") + @"\DemoFiles\Pdf\InputPdf.pdf";
// get the text to search
string textToSearch = textBoxTextToSearch.Text;
// create the PDF text extractor
PdfTextExtract pdfTextExtract = new PdfTextExtract();
// set a demo serial number
pdfTextExtract.SerialNumber = "YCgJMTAE-BiwJAhIB-EhlWTlBA-UEBRQFBA-U1FOUVJO-WVlZWQ==";
int fromPdfPageNumber = int.Parse(textBoxFromPage.Text);
int toPdfPageNumber = textBoxToPage.Text.Length > 0 ? int.Parse(textBoxToPage.Text) : 0;
// search the text in PDF document
PdfTextSearchItem[] searchTextInstances = pdfTextExtract.SearchText(pdfFile, textToSearch,
fromPdfPageNumber, toPdfPageNumber, checkBoxMatchCase.Checked, checkBoxMatchWholeWord.Checked);
// load the PDF file to highlight the searched text
PdfDocument pdfDocument = PdfDocument.FromFile(pdfFile);
// set a demo serial number
pdfDocument.SerialNumber = "YCgJMTAE-BiwJAhIB-EhlWTlBA-UEBRQFBA-U1FOUVJO-WVlZWQ==";
// highlight the searched text in PDF document
foreach (PdfTextSearchItem searchTextInstance in searchTextInstances)
{
PdfRectangle pdfRectangle = new PdfRectangle(searchTextInstance.BoundingRectangle);
// set rectangle color and opacity
pdfRectangle.BackColor = Color.Yellow;
pdfRectangle.Opacity = 30;
// highlight the text
pdfDocument.Pages[searchTextInstance.PdfPageNumber - 1].Layout(pdfRectangle);
}
// write the modified PDF document
try
{
// write the PDF document to a memory buffer
byte[] pdfBuffer = pdfDocument.WriteToMemory();
// inform the browser about the binary data format
HttpContext.Current.Response.AddHeader("Content-Type", "application/pdf");
// let the browser know how to open the PDF document and the file name
HttpContext.Current.Response.AddHeader("Content-Disposition", String.Format("attachment; filename=SearchText.pdf; size={0}",
pdfBuffer.Length.ToString()));
// write the PDF buffer to HTTP response
HttpContext.Current.Response.BinaryWrite(pdfBuffer);
// call End() method of HTTP response to stop ASP.NET page processing
HttpContext.Current.Response.End();
}
finally
{
pdfDocument.Close();
}
}
