activePDF Toolkit可以輕松實現在處理文件時繪制直線，本次教程將要詳細給出繪制直線的代碼示例：

》》》下載activePDF Toolkit試用版

示例代碼如下：

// Copyright (c) 2013 activePDF, Inc.
// Example created 01/23/13

// Make sure to add the activePDF product .NET DLL(s) to your application.
// .NET DLL(s) are typically found in the products 'bin' folder.

class Examples
{
  public void main()
  {
    string strPath;
    int intOpenOutputFile;
    int intOpenInputFile;
    int intCopyForm;
    
    strPath = AppDomain.CurrentDomain.BaseDirectory;

    // Instantiate Object
    APToolkitNET.Toolkit oTK = new APToolkitNET.Toolkit();
    
    // Create the new PDF file
    intOpenOutputFile = oTK.OpenOutputFile(strPath + "new.pdf");
    if (intOpenOutputFile != 0)
    {
      ErrorHandler("OpenOutputFile", intOpenOutputFile);
    }
    
    // Open the template PDF
    intOpenInputFile = oTK.OpenInputFile(strPath + "PDF.pdf");
    if (intOpenInputFile != 0)
    {
      ErrorHandler("OpenInputFile", intOpenInputFile);
    }
    
    // Draw lines making a border around the content
    oTK.LineWidth(1.0f, -1);
    
    oTK.MoveTo(62.0f, 62.0f, -1);
    oTK.DrawTo(62.0f, 730.0f, -1);
    
    oTK.MoveTo(62.0f, 730.0f, -1);
    oTK.DrawTo(550.0f, 730.0f, -1);
    
    oTK.MoveTo(550.0f, 730.0f, -1);
    oTK.DrawTo(550.0f, 62.0f, -1);
    
    oTK.MoveTo(550.0f, 62.0f, -1);
    oTK.DrawTo(62.0f, 62.0f, -1);
    
    // Copy the template (with any changes) to the new file
    intCopyForm = oTK.CopyForm(0, 0);
    if (intCopyForm != 1)
    {
      ErrorHandler("CopyForm", intCopyForm);
    }
    
    // Close the new file to complete PDF creation
    oTK.CloseOutputFile();
    
    // Release Object
    oTK = null;
    
    // Process Complete
    System.Diagnostics.Debug.WriteLine("Done!");
  }
  
  // Error Handling
  public static void ErrorHandler(string strMethod, object rtnCode)
  {
    System.Diagnostics.Debug.WriteLine(strMethod + " error:  " + rtnCode.ToString());
  }
}