Open and save PDF document in Azure Functions v4

The Syncfusion .NET PDF library is used to create, read, edit PDF documents programmatically without the dependency of Adobe Acrobat. Using this library, you can Open and save PDF document in Azure Functions v4.

Steps to open and save PDF document in Azure Functions v4

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Step 1: Create a new Azure Functions project.

Step 2: Create a project name and select the location.

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Step 3: Select function worker as .NET 6.0 (Long-term support).

Step 4: Install the Syncfusion.PDF.Net.Core NuGet package as a reference to your project from NuGet.org.

NOTE

Starting with v16.2.0.x, if you reference Syncfusion assemblies from trial setup or from the NuGet feed, you also have to add “Syncfusion.Licensing” assembly reference and include a license key in your projects. Please refer to this link to know about registering Syncfusion license key in your application to use our components.

Step 5: Include the following namespaces in the Function1.cs file.

 using Syncfusion.Pdf.Grid; using Syncfusion.Pdf; using Syncfusion.Pdf.Parsing; using Syncfusion.Drawing;

Step 6: Add the following code snippet in Run method of Function1 class to perform *open an existing PDF document.

 //Load an existing PDF document from the disk. var assembly = Assembly.GetExecutingAssembly(); var docStream = assembly.GetManifestResourceStream("Open_and_save_PDF_document.Data.Input.pdf"); PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);

Step 7: Add below code example to add a table in the PDF document.

 //Create a PdfGrid. PdfGrid pdfGrid = new PdfGrid(); //Add values to the list. Listobject> data = new Listobject>(); Object row1 = new  Product_ID = "1001", Product_Name = "Bicycle", Price = "10,000" >; Object row2 = new  Product_ID = "1002", Product_Name = "Head Light", Price = "3,000" >; Object row3 = new  Product_ID = "1003", Product_Name = "Break wire", Price = "1,500" >; data.Add(row1); data.Add(row2); data.Add(row3); //Add list to IEnumerable. IEnumerableobject> dataTable = data; //Assign data source. pdfGrid.DataSource = dataTable; //Apply built-in table style. pdfGrid.ApplyBuiltinStyle(PdfGridBuiltinStyle.GridTable4Accent3); //Draw the grid to the page of PDF document. pdfGrid.Draw(graphics, new RectangleF(40, 400, loadedPage.Size.Width - 80, 0));

Step 8: Add below code example to save the PDF document.

 //Save and close the PDF document MemoryStream ms = new MemoryStream(); loadedDocument.Save(ms); loadedDocument.Close(); ms.Position = 0; HttpResponseMessage response = new HttpResponseMessage(HttpStatusCode.OK); response.Content = new ByteArrayContent(ms.ToArray()); response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")  FileName = "Sample.pdf" >; response.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/pdf"); return response;

Step 9: Right click the project and select Publish. Then, create a new profile in the Publish Window.

Step 10: Select the target as Azure and click Next button.

Step 11: Select the Create new button.

Step 12: Click Create button.

Step 13: After creating app service then click Finish button.

Step 14: Click the Publish button.

Step 15: Publish has been succeed.

Step 16: Now, go to Azure portal and select the App Services. After running the service, click Get function URL > Copy. Include the URL as a query string in the URL. Then, paste it into the new browser tab. You will get the PDF document as follows.

You can download a complete working sample from GitHub.

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

An online sample link to create a PDF document in ASP.NET Core.