How to Write to PDF using an Open Source Library called iText 7 in Asp.Net Core [Writer Library (iText7 AGPL License)]

Question: How do I use the #PDF Library called iText 7 to write to the pdf in C-sharp?


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Answer: Follow the steps below to write to the PDF using #iText7 Open Source PDF Library

1. Create a PDF Writer Instance
   

    //Initialize PDF writer
    PdfWriter writer = new PdfWriter(location);?

    

2. Initialize PDF document
   

    PdfDocument pdf = new PdfDocument(writer);?

3. Initialize document
   

   Document document = new(pdf);?

4. Add Image to PDF using iText Sharp or iText 7 Open Source PDF Library
   

     Image logo = new Image(ImageDataFactory.Create(logoPath));
               logo.SetHorizontalAlignment(HorizontalAlignment.CENTER);
               document.Add(logo);?

5. Loop through a list of items and append a Paragraph to the PDF using iText7 Open Source PDF Library in C-Sharp
   

   for (int i = 0; i < items.Count; i++)
    {
         document.Add(new Paragraph(items[i][0].ToString()));
    }?

6. Close the PDF Document when you are done writing to the Stream
   

   document.Close();?

7. See the Complete Function that writes to the PDF using iText 7 in C-Sharp and Asp.Net Core
   

   private void createPdf(String dest, string logoPath, List<string[]> items)
           {
               //Initialize PDF writer
               PdfWriter writer = new PdfWriter(dest);
   
               //Initialize PDF document
               PdfDocument pdf = new PdfDocument(writer);
   
               // Initialize document
               Document document = new(pdf);
               document.SetFontSize(14);
               document.SetTextAlignment(TextAlignment.CENTER);
               //Add paragraph to the document
               Image logo = new Image(ImageDataFactory.Create(logoPath));
               logo.SetHorizontalAlignment(HorizontalAlignment.CENTER);
               document.Add(logo);
               for (int i = 0; i < items.Count; i++)
               {
                   document.Add(new Paragraph(items[i][0].ToString()));
               }
   
   
               //Close document
               document.Close();
           }?

   
   
   Documentation to PDF library in C# called iText 7, a library under AGPL license for Software Distribution. Link Here
   
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