Documents for PDF .NET Edition
Getting Started / Quick Start
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    Quick Start
    In This Topic

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

    Create and Save a PDF Document

    This quick start helps you in getting started with the GcPdf library. It 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

    New 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.
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      // 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.

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    // 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.

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    //Save PDF document
    doc.Save("filename.pdf");
    
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    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 GcPdf
    2. Modify the PDF document
    3. Save the PDF document

    Step 1: Load an existing document in GcPdf

    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.
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      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);
      
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    Step 2: Modify the document

    1. Add a new page to the document using NewPage method of the GcPdfDocument class.
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      //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.
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      //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));
      
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    Step 3: Save the document

    Save the document using Save method of the GcPdfDocument class.

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