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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

GeneralErrors Loading gif/bmp/tif images Pin
gkinu13-Aug-07 22:27
membergkinu13-Aug-07 22:27 
GeneralRe: Errors Loading gif/bmp/tif images Pin
srujana_m19-Nov-07 20:30
membersrujana_m19-Nov-07 20:30 
Questionhow to add a chart to a cell in a table?? Pin
sarodam8-Aug-07 20:44
membersarodam8-Aug-07 20:44 
GeneralSupport for portuguese characters Pin
andre_monteiro26-Jul-07 1:04
memberandre_monteiro26-Jul-07 1:04 
GeneralException on "Height must be grater than zero." Pin
Chi Chi5-Jul-07 23:23
memberChi Chi5-Jul-07 23:23 
GeneralRe: Exception on "Height must be grater than zero." Pin
mayur sharma8-Jul-07 19:19
membermayur sharma8-Jul-07 19:19 
GeneralFailed to retailn "/" character in PDF document Pin
mayur sharma26-Jun-07 4:25
membermayur sharma26-Jun-07 4:25 
GeneralHebrew Pin
shmulik25-Jun-07 12:29
membershmulik25-Jun-07 12:29 
GeneralMerge drops pages Pin
tom.brune22-Jun-07 12:26
membertom.brune22-Jun-07 12:26 
QuestionError in pdf generation Pin
Justin_Joseph11-Jun-07 23:51
memberJustin_Joseph11-Jun-07 23:51 
QuestionConversion to CHAR? Pin
albert pender14-May-07 8:49
memberalbert pender14-May-07 8:49 
AnswerRe: Conversion to CHAR? Pin
Marc Heiligers29-May-07 2:10
memberMarc Heiligers29-May-07 2:10 
GeneralRe: Conversion to CHAR? Pin
albert pender4-Jun-07 6:47
memberalbert pender4-Jun-07 6:47 
GeneralRe: Conversion to CHAR? Pin
mCallegario3-Aug-07 10:47
membermCallegario3-Aug-07 10:47 
QuestionChinese problem in PDFText Pin
Ben Lai2-May-07 15:43
memberBen Lai2-May-07 15:43 
AnswerRe: Chinese problem in PDFText Pin
Paolo Gios2-May-07 23:51
memberPaolo Gios2-May-07 23:51 
QuestionRe: Chinese problem in PDFText Pin
kenFZ23-Sep-07 8:02
memberkenFZ23-Sep-07 8:02 
QuestionUnicode??? Pin
Bich Van19-Apr-07 17:07
memberBich Van19-Apr-07 17:07 
AnswerRe: Unicode??? Pin
Paolo Gios2-May-07 23:51
memberPaolo Gios2-May-07 23:51 
Generalheader/Details Report Pin
MarkTwain16-Apr-07 14:24
memberMarkTwain16-Apr-07 14:24 
GeneralRe: header/Details Report Pin
Paolo Gios3-May-07 0:09
memberPaolo Gios3-May-07 0:09 
QuestionHow can i draw the border line for the page being generated Pin
Suman Rayabharapu8-Apr-07 23:40
memberSuman Rayabharapu8-Apr-07 23:40 
QuestionCan i generate Pie Charts in PDF Pin
Suman Rayabharapu8-Apr-07 23:37
memberSuman Rayabharapu8-Apr-07 23:37 
QuestionError Generating Document Pin
padmakumarg3-Apr-07 4:09
memberpadmakumarg3-Apr-07 4:09 
AnswerRe: Error Generating Document Pin
polisen17-Jun-07 21:59
memberpolisen17-Jun-07 21:59 

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Posted 18 Apr 2005


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