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Gios PDF .NET library

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18 Apr 2005LGPL3
A .NET library for generating impressive PDF reports.

Image 1


This article describes how to use the Gios Pdf.NET open source library, a complete object-oriented .NET library for generating impressive reports with few lines of code.


I started writing this library because I really couldn’t find a good C# library for exporting my reports. When you open a PDF document with Notepad to find out if it’s possible to edit it… well… you change your mind!

...But if you download the PDF format specifications from Adobe’s official site… you can demystify everything!

In this article, it’s not my intention to teach “how to write a clone of my library” but “how to use it” … By the way, if you want to try to write your own library… try it: it’s not impossible and it's a good (and difficult!) exercise!

Using the code

Start instantiating the document with a new PdfDocument object. Remember to set the document format. In this case we specify width and height in centimeters. Document format is provided by the PdfDocumentFormat class:

PdfDocument myPdfDocument = 
  new PdfDocument(PdfDocumentFormat.InCentimeters(21,29.7));

Now we create a table of 100 lines, 6 columns and 4 points of padding:

PdfTable myPdfTable = 
  myPdfDocument.NewTable(new Font("Verdana",12),200,6,4);

Importing data from the datatables... (also column names for the headers!):


Set the format for correct date-time representation:


Now we set our Graphic Design: Colors and Borders...


With just one method, we can set the proportional width of the columns. It's a "percentage like" assignment, but the sum can be different from 100.

myPdfTable.SetColumnsWidth(new int[]{5,25,16,20,20,15});

You can also set colors for a range of cells, in this case, a row:


Now we set some alignment... for the whole table and then, for a column:


This is the most important feature of the library: each page generated by the table can be managed in all the details:

while (!myPdfTable.AllTablePagesCreated)
    // we create a new page to put the generation of the new TablePage:

    PdfPage newPdfPage=myPdfDocument.NewPage();
    PdfTablePage newPdfTablePage = 
      myPdfTable.CreateTablePage(new PdfArea(myPdfDocument,48,120,500,670));

    // we also put a Label 
    PdfTextArea pta=new PdfTextArea(new Font("Verdana",26, FontStyle.Bold), 
      Color.Red, new PdfArea(myPdfDocument,0,20,595,120), 
      ContentAlignment.MiddleCenter,"Contact List");

    // nice thing: we can put all the objects
    // in the following lines, so we can have
    // a great control of layer sequence... 


    // Now we create a loop for serching for people born in 1968. If we find
    // one, we will draw a circle over
    // the birthday cell. This is possible using the
    // the CellArea, that is the Area occupied by a rasterized Cell.
    for (int index=newPdfTablePage.FirstRow;index<=newPdfTablePage.LastRow;index++)
       if (((DateTime)myPdfTable.Rows[index][2].Content).Year==1968)
          PdfCircle pc=newPdfTablePage.CellArea(index,2).InnerCircle(Color.Blue,2);

    // we save each generated page before start rendering the next.


At last... remember to save the document!


And this is the result:

Image 2

Remember, you can also output the PDF to a generic Stream. These are the lines for a Web Response:



  • April 18, 2005 - Initial release.


This article, along with any associated source code and files, is licensed under The GNU Lesser General Public License (LGPLv3)


About the Author

Paolo Gios
Web Developer
Italy Italy
Freelance software ASPNET / C# Software Developer

I live in Torino, Italy

my homepage is:

Comments and Discussions

GeneralRe: Cell-Alignment Pin
Paolo Gios6-Sep-05 3:23
memberPaolo Gios6-Sep-05 3:23 
Generalnot support non-ASCII characters... Pin
Huisheng Chen28-Aug-05 23:15
memberHuisheng Chen28-Aug-05 23:15 
GeneralRe: not support non-ASCII characters... Pin
infal29-Aug-05 6:44
memberinfal29-Aug-05 6:44 
GeneralRe: not support non-ASCII characters... Pin
Huisheng Chen29-Aug-05 18:08
memberHuisheng Chen29-Aug-05 18:08 
GeneralRe: not support non-ASCII characters... Pin
infal30-Aug-05 8:23
memberinfal30-Aug-05 8:23 
QuestionRe: not support non-ASCII characters... Pin
Canastro7-Oct-05 8:25
memberCanastro7-Oct-05 8:25 
AnswerRe: not support non-ASCII characters... Pin
infal9-Oct-05 7:15
memberinfal9-Oct-05 7:15 
AnswerRe: not support non-ASCII characters... Pin
Marco Delgado5-Sep-06 3:01
memberMarco Delgado5-Sep-06 3:01 
GeneralRe: not support non-ASCII characters... Pin
zhangwusheng25-Dec-06 1:10
memberzhangwusheng25-Dec-06 1:10 
GeneralTextEncode error: Pin
Huisheng Chen28-Aug-05 23:12
memberHuisheng Chen28-Aug-05 23:12 
Questionstartxref ? Pin
infal24-Aug-05 17:37
memberinfal24-Aug-05 17:37 
AnswerRe: startxref ? Pin
Paolo Gios25-Aug-05 1:04
memberPaolo Gios25-Aug-05 1:04 
GeneralRe: startxref ? Pin
infal25-Aug-05 4:15
memberinfal25-Aug-05 4:15 
GeneralSystem.Drawing.Image i=Image.FromFile(file); Pin
infal22-Aug-05 8:46
memberinfal22-Aug-05 8:46 
GeneralRe: System.Drawing.Image i=Image.FromFile(file); Pin
Paolo Gios25-Aug-05 0:57
memberPaolo Gios25-Aug-05 0:57 
Generallibrary VS2003 compiling error Pin
coccoliso21-Jul-05 12:53
membercoccoliso21-Jul-05 12:53 
GeneralSupport for German Characters Pin
Burnie5120-Jul-05 13:11
memberBurnie5120-Jul-05 13:11 
GeneralRe: Support for German Characters Pin
Annonic25-Jul-05 5:46
memberAnnonic25-Jul-05 5:46 
Generalslow rendering Pin
Huisheng Chen1-Jul-05 20:41
memberHuisheng Chen1-Jul-05 20:41 
GeneralRe: slow rendering Pin
infal24-Aug-05 18:01
memberinfal24-Aug-05 18:01 
GeneralGraphics Object Pin
romias27-Jun-05 6:16
memberromias27-Jun-05 6:16 
GeneralNeeding to restart IIS Pin
Mad_Force22-Jun-05 14:40
memberMad_Force22-Jun-05 14:40 
GeneralRe: Needing to restart IIS Pin
Annonic24-Jun-05 1:27
memberAnnonic24-Jun-05 1:27 
GeneralRe: Needing to restart IIS Pin
Mad_Force30-Jun-05 17:17
memberMad_Force30-Jun-05 17:17 
Generaladding attachments into existing PDF Pin
xjli9-Jun-05 13:14
memberxjli9-Jun-05 13:14 

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Posted 18 Apr 2005


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