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Gios PDF .NET library

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

Introduction

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.

Background

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!):

myPdfTable.ImportDataTable(Table);

Set the format for correct date-time representation:

myPdfTable.Columns[2].SetContentFormat("{0:dd/MM/yyyy}");

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

myPdfTable.HeadersRow.SetColors(Color.White,Color.Navy);
myPdfTable.SetColors(Color.Black,Color.White,Color.Gainsboro);
myPdfTable.SetBorders(Color.Black,1,BorderType.CompleteGrid);

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:

myPdfTable.Rows[7].SetColors(Color.Black,Color.LightGreen);

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

myPdfTable.SetContentAlignment(ContentAlignment.MiddleCenter);                      
myPdfTable.Columns[1].SetContentAlignment(ContentAlignment.MiddleLeft);

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... 

    newPdfPage.Add(newPdfTablePage);
    newPdfPage.Add(pta);

    // 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);
          pc.StrokeWidth=3.5;
          newPdfPage.Add(pc);
       }

    // we save each generated page before start rendering the next.
    newPdfPage.SaveToDocument();

}

At last... remember to save the document!

myPdfDocument.SaveToFile("Example1.pdf");

And this is the result:

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

Response.ClearHeaders();
Response.AppendHeader("Content-disposition", 
   string.Format("attachment;filename={0}","Report.pdf"));
Response.ContentType="application/pdf"; 
myPdfDocument.SaveToStream(Response.OutputStream);
Response.End();

History

  • April 18, 2005 - Initial release.

License

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

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About the Author

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

I live in Torino, Italy

my homepage is: http://www.paologios.com

Comments and Discussions

 
GeneralRe: Error Generating Document Pin
eldeejay1-Nov-07 4:14
membereldeejay1-Nov-07 4:14 
QuestionRe: Error Generating Document Pin
raju2codeproject16-Sep-08 19:06
memberraju2codeproject16-Sep-08 19:06 
GeneralTalking About Images... Pin
DiegoPagano29-Mar-07 3:34
memberDiegoPagano29-Mar-07 3:34 
AnswerRe: Talking About Images... Pin
DiegoPagano2-Apr-07 10:58
memberDiegoPagano2-Apr-07 10:58 
GeneralRe: Talking About Images... Pin
Eric Engler25-Apr-07 6:51
memberEric Engler25-Apr-07 6:51 
QuestionASCII Enconding Pin
DiegoPagano28-Mar-07 2:41
memberDiegoPagano28-Mar-07 2:41 
AnswerRe: ASCII Enconding Pin
DiegoPagano28-Mar-07 3:23
memberDiegoPagano28-Mar-07 3:23 
GeneralRe: ASCII Enconding Pin
herpi28-Mar-07 3:33
memberherpi28-Mar-07 3:33 
GeneralRe: ASCII Enconding Pin
DiegoPagano28-Mar-07 5:20
memberDiegoPagano28-Mar-07 5:20 
GeneralRe: ASCII Enconding Pin
Dilandau13-Oct-09 1:26
memberDilandau13-Oct-09 1:26 
QuestionSupport for ghostscript? Pin
Sameers Javed27-Mar-07 14:05
memberSameers Javed27-Mar-07 14:05 
AnswerRe: Support for ghostscript? Pin
Paolo Gios2-May-07 22:52
memberPaolo Gios2-May-07 22:52 
Generalconvert a microsoft infopath form(.xsn) to pdf file Pin
akjal4-Mar-07 2:08
memberakjal4-Mar-07 2:08 
QuestionHow can a draw a borderline for a page ?? Pin
Member 381915711-Feb-07 18:45
memberMember 381915711-Feb-07 18:45 
Questionhow to do report with zero rows Pin
Rob-Sz15-Jan-07 20:27
memberRob-Sz15-Jan-07 20:27 
AnswerRe: how to do report with zero rows Pin
Rob-Sz15-Jan-07 22:08
memberRob-Sz15-Jan-07 22:08 
GeneralImage in row Pin
Marcel Vreuls (www.agentbase.nl)28-Nov-06 21:56
memberMarcel Vreuls (www.agentbase.nl)28-Nov-06 21:56 
GeneralRe: Image in row Pin
tommyboy304-Sep-07 1:14
membertommyboy304-Sep-07 1:14 
GeneralUsing Version 2.0 in ASP.NET Pin
jroemer22-Nov-06 22:20
memberjroemer22-Nov-06 22:20 
QuestionHeight must be greater than zero [modified] Pin
avid.hiker17-Nov-06 10:28
memberavid.hiker17-Nov-06 10:28 
AnswerRe: Height must be greater than zero Pin
Marcel Vreuls (www.agentbase.nl)28-Nov-06 21:45
memberMarcel Vreuls (www.agentbase.nl)28-Nov-06 21:45 
QuestionRe: Height must be greater than zero Pin
DidierRensonnet9-Jan-07 5:23
memberDidierRensonnet9-Jan-07 5:23 
AnswerRe: Height must be greater than zero Pin
Joel S.6-Mar-07 7:44
memberJoel S.6-Mar-07 7:44 
GeneralRe: Height must be greater than zero Pin
galvin verghese4-Oct-11 0:27
membergalvin verghese4-Oct-11 0:27 
AnswerRe: Height must be greater than zero Pin
Joel S.8-Mar-07 6:01
memberJoel S.8-Mar-07 6:01 

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Posted 18 Apr 2005

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