Develop Reference

Read PDF Line By Line using iText7 and Fill on Textboxes Winforms

I am working on a WinForms application. I use the pdf file to reset the password and the values on pdf are stored as key-value pairs(email: xxxx#mail.com, pass: 11111).
What I want to do:
Read the PDF file line by line and fill the appropriate textboxes.
What I Have done:
public bool CreatePDF(string location, string email, string key)
{
if(location != "" && email != "" && key != "")
{
PdfWriter pdfwriter = new PdfWriter(location);
PdfDocument pdf = new PdfDocument(pdfwriter);
Document document = new Document(pdf);
Paragraph fields = new Paragraph("Email: "+email + "\n" + "Secret Key: "+key);
document.Add(fields);
document.Close();
return true;
}
else
{
return false;
}
}
public string ReadPDF(string location)
{
var pdfDocument = new PdfDocument(new PdfReader(location));
StringBuilder processed = new StringBuilder();
var strategy = new LocationTextExtractionStrategy();
string text = "";
for (int i = 1; i <= pdfDocument.GetNumberOfPages(); ++i)
{
var page = pdfDocument.GetPage(i);
text += PdfTextExtractor.GetTextFromPage(page, strategy);
processed.Append(text);
}
return text;
}
}
Thank you in advance Guys!. Any suggestions on CreatePDF are also welcome.

This is what I came up with,
var pdfDocument = new PdfDocument(new PdfReader("G:\\Encryption_File.pdf"));
StringBuilder processed = new StringBuilder();
var strategy = new LocationTextExtractionStrategy();
string text = "";
for (int i = 1; i <= pdfDocument.GetNumberOfPages(); ++i)
{
var page = pdfDocument.GetPage(i);
text += PdfTextExtractor.GetTextFromPage(page, strategy);
processed.Append(text);
}
text.Split('\n');
string line = "";
line = text + "&";
string[] newLines = line.Split('&');
textBox1.Text = newLines[0].Split(':')[1].ToString();
textBox2.Text = newLines[0].Split(':')[2].ToString();

Can't print jpg with Aspose.Pdf

I want to load in a JPEG file and print it with Aspose.Pdf in C# (.net Framework 4.8). The code I currently have is:
public void PrintImage(string fileToPrint, string printerName, string jobName)
{
System.Drawing.Image srcImage = System.Drawing.Image.FromFile(fileToPrint);
int h = srcImage.Height;
int w = srcImage.Width;
var doc = new Document();
var page = doc.Pages.Add();
var image = new Image();
image.File = (fileToPrint);
page.PageInfo.Height = (h);
page.PageInfo.Width = (w);
page.PageInfo.Margin.Bottom = (0);
page.PageInfo.Margin.Top = (0);
page.PageInfo.Margin.Right = (0);
page.PageInfo.Margin.Left = (0);
page.Paragraphs.Add(image);
var viewer = new PdfViewer(doc);
PrintUsingViewer(viewer, printerName, jobName);
}
private static void PrintUsingViewer(PdfViewer viewer, string printerName, string jobName)
{
viewer.AutoResize = true; // Print the file with adjusted size
viewer.AutoRotate = true; // Print the file with adjusted rotation
viewer.PrintPageDialog = false; // Do not produce the page number dialog when printing
var ps = new System.Drawing.Printing.PrinterSettings();
var pgs = new System.Drawing.Printing.PageSettings();
ps.PrinterName = printerName;
viewer.PrinterJobName = jobName;
viewer.PrintDocumentWithSettings(pgs, ps);
viewer.Close();
}
When I save the document instead of printing and look at it, it seems fine (the image is added). However, when trying to print the image it is not printed and the page is just blank..
I would like to print without first saving the document as a PDF and then trying to print that saved PDF. Does anyone see what I am doing wrong?

The solution was adding this line of code
doc.ProcessParagraphs();
right after this line:
page.Paragraphs.Add(image);
So the code now becomes
public void PrintImage(string fileToPrint, string printerName, string jobName)
{
System.Drawing.Image srcImage = System.Drawing.Image.FromFile(fileToPrint);
int h = srcImage.Height;
int w = srcImage.Width;
var doc = new Document();
var page = doc.Pages.Add();
var image = new Image();
image.File = (fileToPrint);
page.PageInfo.Height = (h);
page.PageInfo.Width = (w);
page.PageInfo.Margin.Bottom = (0);
page.PageInfo.Margin.Top = (0);
page.PageInfo.Margin.Right = (0);
page.PageInfo.Margin.Left = (0);
page.Paragraphs.Add(image);
doc.ProcessParagraphs();
var viewer = new PdfViewer(doc);
PrintUsingViewer(viewer, printerName, jobName);
}
private static void PrintUsingViewer(PdfViewer viewer, string printerName, string jobName)
{
viewer.AutoResize = true; // Print the file with adjusted size
viewer.AutoRotate = true; // Print the file with adjusted rotation
viewer.PrintPageDialog = false; // Do not produce the page number dialog when printing
var ps = new System.Drawing.Printing.PrinterSettings();
var pgs = new System.Drawing.Printing.PageSettings();
ps.PrinterName = printerName;
viewer.PrinterJobName = jobName;
viewer.PrintDocumentWithSettings(pgs, ps);
viewer.Close();
}
Now the image is printed correctly!

How to Align Paragraph in Center using OpenXml C# for PPT?

I'm trying to align my paragraph in the center for ppt but its not working!
This is my code:
public static void ChangeSlidePart(SlidePart slidePart1,PresentationPart presentationPart)
{
Slide slide1 = slidePart1.Slide;
CommonSlideData commonSlideData1 = slide1.GetFirstChild<CommonSlideData>();
ShapeTree shapeTree1 = commonSlideData1.GetFirstChild<ShapeTree>();
Shape shape1 = shapeTree1.GetFirstChild<Shape>();
TextBody textBody1 = shape1.GetFirstChild<TextBody>();
D.Paragraph paragraph1 = textBody1.GetFirstChild<D.Paragraph>();
D.Run run1 = paragraph1.GetFirstChild<D.Run>();
run1.RunProperties= new D.RunProperties() {FontSize = 6600};
run1.RunProperties.Append(new D.LatinFont() { Typeface = "Arial Black" });
//run1.Append(runProperties1);
D.Text text1 = run1.GetFirstChild<D.Text>();
text1.Text = "Good day";
}
I tried adding to this paragraph properties with the corresponding justification but nothing was updated.

It doesn't seem that easy to do this using Open XML SDK. With Aspose.Slides for .NET, you can align a paragraph as shown below:
// The presentation variable here is an instance of the Presentation class.
var firstShape = (IAutoShape) presentation.Slides[0].Shapes[0];
var firstParagraph = firstShape.TextFrame.Paragraphs[0];
firstParagraph.ParagraphFormat.Alignment = TextAlignment.Center;
You can also evaluate Aspose.Slides Cloud SDK for .NET. This REST-based API allows you to make 150 free API calls per month for API learning and presentation processing. The following code example shows you how to align a paragraph using Aspose.Slides Cloud:
var slidesApi = new SlidesApi("my_client_id", "my_client_key");
var filePath = "example.pptx";
var slideIndex = 1;
var shapeIndex = 1;
var paragraphIndex = 1;
var paragraph = slidesApi.GetParagraph(
filePath, slideIndex, shapeIndex, paragraphIndex);
paragraph.Alignment = Paragraph.AlignmentEnum.Center;
slidesApi.UpdateParagraph(
filePath, slideIndex, shapeIndex, paragraphIndex, paragraph);
I work as a Support Developer at Aspose.

Adding a new page using iTextSharp

I have a class that build the content for my table of contents and that works, fine and dandy.
Here's the code:
public void Build(string center,IDictionary<string,iTextSharp.text.Image> images)
{
iTextSharp.text.Image image = null;
XPathDocument rapportTekst = new XPathDocument(Application.StartupPath + #"..\..\..\RapportTemplates\RapportTekst.xml");
XPathNavigator nav = rapportTekst.CreateNavigator();
XPathNodeIterator iter;
iter = nav.Select("//dokument/brevhoved");
iter.MoveNext();
var logo = iTextSharp.text.Image.GetInstance(iter.Current.GetAttribute("url", ""));
iter = nav.Select("//dokument/gem_som");
iter.MoveNext();
string outputPath = iter.Current.GetAttribute("url", "")+center+".pdf";
iter = nav.Select("//dokument/titel");
iter.MoveNext();
this.titel = center;
Document document = new Document(PageSize.A4, 30, 30, 100, 30);
var outputStream = new FileStream(outputPath, FileMode.Create);
var pdfWriter = PdfWriter.GetInstance(document, outputStream);
pdfWriter.SetLinearPageMode();
var pageEventHandler = new PageEventHandler();
pageEventHandler.ImageHeader = logo;
pdfWriter.PageEvent = pageEventHandler;
DateTime timeOfReport = DateTime.Now.AddMonths(-1);
pageWidth = document.PageSize.Width - (document.LeftMargin + document.RightMargin);
pageHight = document.PageSize.Height - (document.TopMargin + document.BottomMargin);
document.Open();
var title = new Paragraph(titel, titleFont);
title.Alignment = Element.ALIGN_CENTER;
document.Add(title);
List<TableOfContentsEntry> _contentsTable = new List<TableOfContentsEntry>();
nav.MoveToRoot();
iter = nav.Select("//dokument/indhold/*");
Chapter chapter = null;
int chapterCount = 1;
while (iter.MoveNext())
{
_contentsTable.Add(new TableOfContentsEntry("Test", pdfWriter.CurrentPageNumber.ToString()));
XPathNodeIterator innerIter = iter.Current.SelectChildren(XPathNodeType.All);
chapter = new Chapter("test", chapterCount);
while(innerIter.MoveNext())
{
if (innerIter.Current.Name.ToString().ToLower().Equals("billede"))
{
image = images[innerIter.Current.GetAttribute("navn", "")];
image.Alignment = Image.ALIGN_CENTER;
image.ScaleToFit(pageWidth, pageHight);
chapter.Add(image);
}
if (innerIter.Current.Name.ToString().ToLower().Equals("sektion"))
{
string line = "";
var afsnit = new Paragraph();
line += (innerIter.Current.GetAttribute("id", "") + " ");
innerIter.Current.MoveToFirstChild();
line += innerIter.Current.Value;
afsnit.Add(line);
innerIter.Current.MoveToNext();
afsnit.Add(innerIter.Current.Value);
chapter.Add(afsnit);
}
}
chapterCount++;
document.Add(chapter);
}
document = CreateTableOfContents(document, pdfWriter, _contentsTable);
document.Close();
}
I'm then calling the method CreateTableOfContents(), and as such it is doing what it is supposed to do. Here's the code for the method:
public Document CreateTableOfContents(Document _doc, PdfWriter _pdfWriter, List<TableOfContentsEntry> _contentsTable)
{
_doc.NewPage();
_doc.Add(new Paragraph("Table of Contents", FontFactory.GetFont("Arial", 18, Font.BOLD)));
_doc.Add(new Chunk(Environment.NewLine));
PdfPTable _pdfContentsTable = new PdfPTable(2);
foreach (TableOfContentsEntry content in _contentsTable)
{
PdfPCell nameCell = new PdfPCell(_pdfContentsTable);
nameCell.Border = Rectangle.NO_BORDER;
nameCell.Padding = 6f;
nameCell.Phrase = new Phrase(content.Title);
_pdfContentsTable.AddCell(nameCell);
PdfPCell pageCell = new PdfPCell(_pdfContentsTable);
pageCell.Border = Rectangle.NO_BORDER;
pageCell.Padding = 6f;
pageCell.Phrase = new Phrase(content.Page);
_pdfContentsTable.AddCell(pageCell);
}
_doc.Add(_pdfContentsTable);
_doc.Add(new Chunk(Environment.NewLine));
/** Reorder pages so that TOC will will be the second page in the doc
* right after the title page**/
int toc = _pdfWriter.PageNumber - 1;
int total = _pdfWriter.ReorderPages(null);
int[] order = new int[total];
for (int i = 0; i < total; i++)
{
if (i == 0)
{
order[i] = 1;
}
else if (i == 1)
{
order[i] = toc;
}
else
{
order[i] = i;
}
}
_pdfWriter.ReorderPages(order);
return _doc;
}
The problem is however. I want to insert a page break before the table of contents, for the sake of reordering the pages, so that the table of contents is the first page, naturally. But the output of the pdf-file is not right.
Here's a picture of what it looks like:
It seems like the _doc.NewPage() in the CreateTableOfContents() method does not execute correctly. Meaning that the image and the table of contents is still on the same page when the method starts the reordering of pages.
EDIT: To clarify the above, the _doc.NewPage() gets executed, but the blank page is added after the picture and the table of contents.
I've read a couple of places that this could be because one is trying to insert a new page after an already blank page. But this is not the case.
I'll just link to the pdf files aswell, to better illustrate the problem.
The pdf with table of contents: with table of contents
The pdf without table of contents: without table of contents
Thank you in advance for your help :)

How to get rid of my "After Spacing" on open xml

In open XML my word document defaults to having "Spacing After: 10 pt" How would I change it to 0, so there is no spacing.
Here is my code, which pretty much grabs the information from a database and places it onto a word document to be able to print out. But the spacing is making the document too big.
using (WordprocessingDocument wordDoc = WordprocessingDocument.Create(filepath, WordprocessingDocumentType.Document)) {
MainDocumentPart mainPart = wordDoc.AddMainDocumentPart();
mainPart.Document = new Document();
Body body = mainPart.Document.AppendChild(new Body());
Paragraph para_main = body.AppendChild(new Paragraph());
Run run_main = para_main.AppendChild(new Run());
// Goes through all of the forms
foreach (var form in forms) {
Table table = new Table();
// Initialize all of the table properties
TableProperties tblProp = new TableProperties(
new TableBorders(
new TopBorder() { Val = new EnumValue<BorderValues>(BorderValues.BasicBlackSquares), Size = 16 },
new LeftBorder() { Val = new EnumValue<BorderValues>(BorderValues.BasicBlackSquares), Size = 16 },
new RightBorder() { Val = new EnumValue<BorderValues>(BorderValues.BasicBlackSquares), Size = 16 },
new BottomBorder() { Val = new EnumValue<BorderValues>(BorderValues.BasicBlackSquares), Size = 16 },
new InsideHorizontalBorder() { Val = new EnumValue<BorderValues>(BorderValues.BasicBlackSquares), Size = 8 },
new InsideVerticalBorder() { Val = new EnumValue<BorderValues>(BorderValues.BasicBlackSquares), Size = 8 }
),
new SpacingBetweenLines() { Before = "20", After = "20" }
//new TableCellProperties(
// new
//new TableJustification() {Val = TableRowAlignmentValues.Center}
);
table.AppendChild<TableProperties>(tblProp);
Paragraph para_header = body.AppendChild(new Paragraph());
Run run_header = para_header.AppendChild(new Run());
RunProperties runProps = run_header.AppendChild(new RunProperties(new Bold()));
string username = form.Username;
string proces_header = form.HeaderTitle;
run_header.AppendChild(new Text(proces_header + " | " + username));
for (int i = 0; i < form.FieldList.Count; i++) {
if (!(form.FieldList[i].Token == "USR" || form.FieldList[i].Token == "SNT")) {
TableRow tr = new TableRow();
TableCell header_cell = new TableCell();
header_cell.Append(new Paragraph(new Run(new Text(form.FieldList[i].Label))));
TableCell value_cell = new TableCell();
value_cell.Append(new Paragraph(new Run(new Text(form.FieldList[i].Value))));
tr.Append(header_cell, value_cell);
table.Append(tr);
}
}
wordDoc.MainDocumentPart.Document.Body.Append(table);
}
mainPart.Document.Save();
wordDoc.Close();
return "Success";
}

The line spacing needs to be appended to the paragraph properties and of course that needs to be appended to the paragraph.
Here is the long way to do it. The SpacingBetweenLines can also set the line height and the "rules" control how the before and after values are used.
SpacingBetweenLines spacing = new SpacingBetweenLines() { Line = "240", LineRule = LineSpacingRuleValues.Auto, Before = "0", After = "0" };
ParagraphProperties paragraphProperties = new ParagraphProperties();
Paragraph paragraph = new Paragraph();
paragraphProperties.Append(spacing);
paragraph.Append(paragraphProperties);
It looks like you are trying to set the line spacing to the table. That will not work that way(believe me I tried). Text around the table is controlled by the text wrapping and the positioning of the table.
Also when working with multiple tables, if you want to keep them separated there needs to be a paragraph(or something other then a table) after the table, otherwise your tables we merge together.
If you need that space create a paragraph with the font set to .5 or something really small and just add it after each table.