How to create PDF document in Linux Docker using C#

The Syncfusion Essential® PDF is a .NET Core PDF library used to create, read, and edit PDF documents. Using this library, you can create a PDF document in the ASP.NET Core platform in Linux.

Steps to create a PDF document in Linux Docker using C#:

1. Create a new ASP.NET Core application and enable the docker support with Linux as a target OS.

2. Install the Syncfusion.Pdf.Net.Core NuGet package as a reference to your .NET Core project from NuGet.org.

3. Add a new button (Create Document) in the Index.cshtml as follows.

<div class="btn">
@{ Html.BeginForm("CreatePDF", "Home", FormMethod.Post);
{
                <input type="submit" value="Create PDF" class=" btn" />
}}
</div>

4. Include the following namespaces in the HomeController.cs file.

   using Syncfusion.Pdf;
   using Syncfusion.Pdf.Graphics;
   using Syncfusion.Drawing;
   using System.IO;
   

5. Add a new action method CreateDocument in HomeController.cs and include the following code sample to create a PDF file and download it.

//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a page to the document
PdfPage page = document.Pages.Add();
//Create PDF graphics for the page
PdfGraphics graphics = page.Graphics;
 //Set the standard font
PdfFont font = new PdfStandardFont(PdfFontFamily.Helvetica, 20); 
//Draw the text
graphics.DrawString("Hello World!!!", font, PdfBrushes.Black, new PointF(0, 0));
 //Saving the PDF to the MemoryStream
MemoryStream stream = new MemoryStream();
document.Save(stream);
 //Set the position to '0'
stream.Position = 0;
 //Download the PDF document in the browser
FileStreamResult fileStreamResult = new FileStreamResult(stream, "application/pdf"); 
fileStreamResult.FileDownloadName = "Sample.pdf"; 
return fileStreamResult;

6. Build and run the sample in the docker, it will pull the Linux docker image from the docker hub and run the project. Now, the webpage will open in the browser. Click the Create PDF button to create the PDF document from Linux docker.
7. By executing the program, you will get the PDF document as follows.

A complete work sample for creating a PDF in the Linux docker container can be downloaded from CreatePdfDockerSample.zip.

Take a moment to peruse the documentation, where you will find other options like drawing right-to-left text and multi-column text, consuming TrueType fonts, Standard fonts, and CJK fonts. Also, the features like PDF form filling, extract text or images from PDF and protect PDF documents with code examples.

Click here to explore the rich set of Syncfusion Essential® PDF features.

See Also:

Create a PDF file in Xamarin

Create a PDF file in ASP.NET MVC

Create a PDF file in WPF

Create a PDF file in Windows Forms