How to draw rounded corner rectangle on PDF document in C# and VB.NET?
The Syncfusion Essential PDF is a feature-rich and high performance .NET 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 Console application.
Steps to draw a round corner rectangle on PDF document programmatically in C#:
- Create a new C# console application project.
Install the Syncfusion.Pdf.WinForms NuGet package as a reference to your .NET Framework application from the NuGet.org.
- Include the following namespaces in Program.cs file.
C#
using Syncfusion.Pdf; using Syncfusion.Pdf.Graphics; using System.Drawing; using System.Drawing.Drawing2D;
VB.NET
Imports Syncfusion.Pdf Imports Syncfusion.Pdf.Graphics Imports System.Drawing Imports System.Drawing.Drawing2D
You can draw a round corner rectangle on PDF document in .NET Framework application by using the GraphicsPath class.
- Include the following code snippet in Program.cs file 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 GraphicsPath
GraphicsPath graphicsPath = new GraphicsPath();
//Draw the rounded rectangle as separate 4 arcs with same dimensions of width and height
graphicsPath.AddArc(rect.X, rect.Y, dimension, dimension, 180, 90);
graphicsPath.AddArc(rect.X + rect.Width - dimension, rect.Y, dimension, dimension, 270, 90);
graphicsPath.AddArc(rect.X + rect.Width - dimension, rect.Y + rect.Height - dimension, dimension, dimension, 0, 90);
graphicsPath.AddArc(rect.X, rect.Y + rect.Height - dimension, dimension, dimension, 90, 90);
//Close the path
graphicsPath.CloseFigure();
//Get the path points
PointF[] points = graphicsPath.PathPoints;
//Get the path types
byte[] pathTypes = graphicsPath.PathTypes;
//Create the PdfPath
PdfPath pdfPath = new PdfPath(PdfPens.Black, points, pathTypes);
//Draw the path on PDF page
graphics.DrawPath(PdfPens.Black, pdfPath);
//Save the PDF document
document.Save("RoundRectangle.pdf");
//Close the instance of PdfDocument
document.Close(true);
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 GraphicsPath
Dim graphicsPath As GraphicsPath = New GraphicsPath
'Draw the rounded rectangle as separate 4 arcs with same dimensions of width and height
graphicsPath.AddArc(rect.X, rect.Y, dimension, dimension, 180, 90)
graphicsPath.AddArc((rect.X + (rect.Width - dimension)), rect.Y, dimension, dimension, 270, 90)
graphicsPath.AddArc((rect.X + (rect.Width - dimension)), (rect.Y + (rect.Height - dimension)), dimension, dimension, 0, 90)
graphicsPath.AddArc(rect.X, (rect.Y + (rect.Height - dimension)), dimension, dimension, 90, 90)
'Close the path
graphicsPath.CloseFigure
'Get the path points
Dim points() As PointF = graphicsPath.PathPoints
'Get the path types
Dim pathTypes() As Byte = graphicsPath.PathTypes
'Create the PdfPath
Dim pdfPath As PdfPath = New PdfPath(PdfPens.Black, points, pathTypes)
'Draw the path on PDF page
graphics.DrawPath(PdfPens.Black, pdfPath)
'Save the PDF document
document.Save("RoundRectangle.pdf")
'Close the instance of PdfDocument
document.Close(True)
A complete work sample can be downloaded from RoundRectangle.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 ASP.NET Core
Note:
Starting with v16.2.0.x, if you reference Syncfusion assemblies from trial setup or from the NuGet feed, include a license key in your projects. Refer to link to learn about generating and registering Syncfusion license key in your application to use the components without trail message.
Conclusion
I hope you enjoyed learning about how to draw rounded corner rectangle on PDF document in C# and VB.NET.
You can refer to our WinForms PDF feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our PDF example to understand how to create and manipulate data in the .NET PDF.
For current customers, you
can check out our Document
processing libraries from the
License and Downloads page. If
you are new to Syncfusion, you can try our 30-day free trial to check out our ASP.NET Core File Format
PDF and other .NET Core controls.
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