The following quick start sections help you in getting started with the DsPdf library:

• Create and save a PDF document
• Load and modify a PDF document

Create and Save a PDF Document

This quick start covers how to create a simple PDF document having a single page and draw string on it in a specified font using a .NET Core or .NET Standard application. Follow the steps below to get started:

1. Create a new PDF document
2. Draw a string on the PDF document
3. Save the PDF document

Step 1: Create a new PDF document

1. Create a new application (.NET Core Console App\Windows Forms App) and add the references.
2. Include the following namespaces
   • using GrapeCity.Documents.Pdf;
   • using GrapeCity.Documents.Text;
3. Create a new PDF document using an instance of GcPdfDocument and define a text format for drawing a string, through code.

   C#	Copy Code
   // Create a new PDF document: GcPdfDocument doc = new GcPdfDocument(); // Add a page, and get its Graphics object to draw on: GcPdfGraphics g = doc.NewPage().Graphics; // Create a text format for the "Hello World!" string: TextFormat tf = new TextFormat(); // Use standard Times font tf.Font = StandardFonts.Times; // Pick a font size: tf.FontSize = 14;

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Step 2: Draw a string on the PDF document

Add the following code that uses DrawString method of GcGraphics class to draw string.

// Draw the string at (1",1") from top/left of page
//(72 dpi is the default PDF graphics' resolution):
g.DrawString("Hello World!", tf, new PointF(72, 72));

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Step 3: Save the document

Save the document using Save method of the GcPdfDocument class.

//Save PDF document
doc.Save("filename.pdf");

Load and Modify a PDF Document

This quick start covers how to load an existing PDF document, modify and save it using a .NET Core or .NET Standard application. Follow the steps below to get started:

1. Load an existing document in DsPdf
2. Modify the PDF document
3. Save the PDF document

Step 1: Load an existing document in DsPdf

1. Create a new application (.NET Core Console App\Windows Forms App) and add the references.
2. Include the following namespace
   • using GrapeCity.Documents.Pdf;
3. Load an existing document using Load method of the GcPdfDocument class.

   C#	Copy Code
   GcPdfDocument doc = new GcPdfDocument(); //Create an object of filestream var fs = new FileStream(Path.Combine("DocAttachment.pdf"), FileMode.Open, FileAccess.Read); //Load the document doc.Load(fs);

Step 2: Modify the document

1. Add a new page to the document using NewPage method of the GcPdfDocument class.

   C#	Copy Code
   //Add a new page in the document GcPdfGraphics g = doc.NewPage().Graphics;

2. Add the following code that uses DrawString method of GcGraphics class to draw string.

   C#	Copy Code
   //Add text on the new page g.DrawString("This is a newly added page in the modified document.", new TextFormat() { Font = StandardFonts.Times, FontSize = 12 }, new PointF(72, 72));

Step 3: Save the document

Save the document using Save method of the GcPdfDocument class.

//Save the document
doc.Save("ModifiedDocument.pdf");