Add Graphs in PDF Documents using C#

AddGraphsInPDF_CSharp.md

Learn how to add graphs in PDF documents using C#: https://blog.conholdate.com/2021/11/11/add-shapes-in-pdf-documents-using-csharp/

The following topics are discussed/covered here:

1. Create Filled Rectangle in PDF Documents using C#
2. Add Circle in PDF Documents using C#
3. Draw Line Across the Page in PDF Documents using C#
4. Add Ellipse in PDF Documents using C#

AddGraphsInPDF_CSharp_AddCircle.cs

// Create Document instance
Document doc = new Document();

// Add page to pages collection of PDF file
Page page = doc.Pages.Add();

// Create Drawing object with certain dimensions
Graph graph = new Graph(400, 200);

// create circle
Circle circle = new Circle(100, 100, 40);
circle.GraphInfo.Color = Color.Green;
circle.GraphInfo.FillColor = Color.GreenYellow;

graph.Shapes.Add(circle);

// Add Graph object to paragraphs collection of page
page.Paragraphs.Add(graph);

// Save PDF file
doc.Save(@"C:\Files\PDF\FilledCircle_out.pdf");

AddGraphsInPDF_CSharp_AddEllipse.cs

// Create Document instance
Document doc = new Document();

// Add page to pages collection of PDF file
Page page = doc.Pages.Add();

// Create Drawing object with certain dimensions
Graph graph = new Graph(400, 400);

// Define text
TextFragment textFragment = new TextFragment("Ellipse");
textFragment.TextState.Font = FontRepository.FindFont("Helvetica");
textFragment.TextState.FontSize = 24;

// Draw ellipse
Ellipse ellipse = new Ellipse(100, 100, 120, 180);
ellipse.GraphInfo.FillColor = Color.GreenYellow;
ellipse.GraphInfo.Color = Color.Red;
ellipse.Text = textFragment;

// Add ellipse to shapes collection of Graph object
graph.Shapes.Add(ellipse);

// Add Graph object to paragraphs collection of page
page.Paragraphs.Add(graph);

// Save PDF file
doc.Save(@"C:\Files\PDF\EclipseWithText_out.pdf");

AddGraphsInPDF_CSharp_AddFilledRectangle.cs

// Create Document instance
Document doc = new Document();

// Add page to pages collection of PDF file
Page page = doc.Pages.Add();

// Create Graph instance
Graph graph = new Graph(100, 400);

// Add graph object to paragraphs collection of page instance
page.Paragraphs.Add(graph);

// Create Rectangle instance
Aspose.Pdf.Drawing.Rectangle rect = new Aspose.Pdf.Drawing.Rectangle(100, 100, 200, 120);

// Specify fill color for Graph object
rect.GraphInfo.FillColor = Color.Gray;

// Add rectangle object to shapes collection of Graph object
graph.Shapes.Add(rect);

// Save PDF file
doc.Save(@"C:\Files\PDF\FilledRectangle_out.pdf");

AddGraphsInPDF_CSharp_DrawLines.cs

// Create Document instance
Document doc = new Document();

// Add page to pages collection of PDF file
Page page = doc.Pages.Add();

// Set page margin on all sides as 0
page.PageInfo.Margin.Left = 0;
page.PageInfo.Margin.Right = 0;
page.PageInfo.Margin.Bottom = 0;
page.PageInfo.Margin.Top = 0;

// Create Graph object with Width and Height equal to page dimensions
Graph graph = new Graph((float)page.PageInfo.Width, (float)page.PageInfo.Height);

// Create first line object starting from Lower-Left to Top-Right corner of page
Line line = new Line(new float[] { (float) page.Rect.LLX, 0, (float) page.PageInfo.Width,
    (float) page.Rect.URY });

// Add line to shapes collection of Graph object
graph.Shapes.Add(line);

// Draw line from Top-Left corner of page to Bottom-Right corner of page
Line line2 = new Line(new float[] { 0, (float) page.Rect.URY, (float) page.PageInfo.Width,
    (float) page.Rect.LLX });

// Add line to shapes collection of Graph object
graph.Shapes.Add(line2);

// Add Graph object to paragraphs collection of page
page.Paragraphs.Add(graph);

// Save PDF file
doc.Save(@"C:\Files\PDF\DrawLineAcrossPage_out.pdf");