How to draw rounded corner rectangle in ASP.NET Core PDF?
The Syncfusion Essential® PDF is a feature-rich and high performance .NET Core PDF library used to create, read, and edit PDF documents programmatically without Adobe dependencies. This library also offers functionality to merge, split, stamp, forms, compress, and secure PDF files.
Using this library, you can draw different shapes like line, curve, rectangle and more on PDF documents in C# and VB.NET. This sample explains how to draw a round corner rectangle on PDF document in ASP.NET Core application.
Steps to draw a round corner rectangle on PDF document in ASP.NET Core application:
- Create a new ASP.NET Core Web application project.
- Select Web Application (Model-View-Controller) pattern for the project.
- Install the Syncfusion.Pdf.Net.Core NuGet package as a reference to your .NET standard applications from the NuGet.org.
- A default controller named HomeController.cs gets added on creation of the project.
- A default action method named Index will be present in HomeController.cs. Right-click on the Index method and select Go to View where you will be directed to its view page Index.cshtml.
- Add a new button in Index.cshtml as shown below.
CSHTML
@{Html.BeginForm("CreatePDF", "Home", FormMethod.Get); { <div> <input type="submit" value="Create PDF" style="width:150px;height:27px" /> </div> } Html.EndForm(); }
- Include the following namespaces in HomeController.cs file.
C#
using Syncfusion.Drawing; using Syncfusion.Pdf; using Syncfusion.Pdf.Graphics; using System.IO;
VB.NET
Imports System.Drawing Imports Syncfusion.Pdf Imports Syncfusion.Pdf.Graphics Imports System.IO
- You can draw a round corner rectangle on PDF document in .NET Standard application by using the PdfPath class.
- Add a new IActionResult with name as CreatePDF and include the following code snippet to draw a round corner rectangle on PDF document.
C#
//Create a new PDF document PdfDocument document = new PdfDocument(); //Add a new page to the document PdfPage page = document.Pages.Add(); //Initialize graphics for the page PdfGraphics graphics = page.Graphics; //Represent the shape graphics.DrawString("Rounded Rectangle", new PdfStandardFont(PdfFontFamily.Helvetica, 16), PdfBrushes.DarkBlue, new PointF(190,30)); //Create the rectangle RectangleF rect = new RectangleF(160, 70, 200, 100); int dimension = 30; //Create the PdfPath PdfPath pdfPath = new PdfPath(); //Draw the rounded rectangle as separate 4 arcs with same dimensions of width and height pdfPath.AddArc(rect.X, rect.Y, dimension, dimension, 180, 90); pdfPath.AddArc(rect.X + rect.Width - dimension, rect.Y, dimension, dimension, 270, 90); pdfPath.AddArc(rect.X + rect.Width - dimension, rect.Y + rect.Height - dimension, dimension, dimension, 0, 90); pdfPath.AddArc(rect.X, rect.Y + rect.Height - dimension, dimension, dimension, 90, 90); //Close the path pdfPath.CloseFigure(); //Draw the PDF path graphics.DrawPath(PdfPens.Black, pdfPath); //Saving the PDF to the MemoryStream MemoryStream stream = new MemoryStream(); document.Save(stream); //Set the position as '0' stream.Position = 0; //Download the PDF document in the browser FileStreamResult fileStreamResult = new FileStreamResult(stream, "application/pdf"); fileStreamResult.FileDownloadName = "RoundRectangle.pdf"; return fileStreamResult;
VB.NET
'Create a new PDF document Dim document As PdfDocument = New PdfDocument 'Add a new page to the document Dim page As PdfPage = document.Pages.Add 'Initialize graphics for the page Dim graphics As PdfGraphics = page.Graphics 'Represent the shape graphics.DrawString("Rounded Rectangle", New PdfStandardFont(PdfFontFamily.Helvetica, 16), PdfBrushes.DarkBlue, New PointF(190, 30)) 'Create the rectangle Dim rect As RectangleF = New RectangleF(160, 70, 200, 100) Dim dimension As Integer = 30 'Create the PdfPath Dim pdfPath As PdfPath = New PdfPath 'Draw the rounded rectangle as separate 4 arcs with same dimensions of width and height pdfPath.AddArc(rect.X, rect.Y, dimension, dimension, 180, 90) pdfPath.AddArc(rect.X + rect.Width - dimension, rect.Y, dimension, dimension, 270, 90) pdfPath.AddArc(rect.X + rect.Width - dimension, rect.Y + rect.Height - dimension, dimension, dimension, 0, 90) pdfPath.AddArc(rect.X, rect.Y + rect.Height - dimension, dimension, dimension, 90, 90) 'Close the path pdfPath.CloseFigure() 'Draw the PDF path graphics.DrawPath(PdfPens.Black, pdfPath) 'Saving the PDF to the MemoryStream Dim stream As MemoryStream = New MemoryStream document.Save(stream) 'Set the position as '0' stream.Position = 0 'Download the PDF document in the browser Dim fileStreamResult As FileStreamResult = New FileStreamResult(stream, "application/pdf") fileStreamResult.FileDownloadName = "RoundRectangle.pdf" Return fileStreamResult
A complete work sample can be downloaded from RoundedRectangle.zip.
By executing the program, you will get the PDF document as follows.
Take a moment to peruse the documentation, where you will find other options likes adding shapes to PDF document and shape pagination.
Click here to explore the rich set of Syncfusion Essential® PDF features.
An online sample link for drawing different shapes on PDF document.
See Also:
Draw a round corner rectangle in Windows Forms
Note:
Starting with v16.2.0.x, if you reference Syncfusion® assemblies from the trial setup or the NuGet feed, include a license key in your projects. Refer to the link to learn about generating and registering the Syncfusion® license key in your application to use the components without a trial message.
Conclusion:
I hope you enjoyed learning about how to draw rounded corner rectangle in ASP.NET Core PDF.
You can refer to our Flutter PDF feature tour page to learn about its other groundbreaking feature representations and documentation, and how to quickly get started with configuration specifications. You can also explore our Flutter PDF Flutter PDF examples to understand how to create and manipulate data.
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