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January 2011 - Posts

ASP.NET MVC 3 Released

At last! Go get it from here.

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Enterprise Library Extensibility Hands-on Labs Released

The Patterns & Practices team has just released the Enterprise Library Extensibility Hands-on Labs. It provides step by step guidance on creating:

  • Custom exception handler
  • Custom logging trace listener
  • Custom configuration source (registry-based)

Go get it from Codeplex: http://entlib.codeplex.com/releases/view/58929

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Generating PDF Files With iTextSharp

I recently had the need to generate a PDF file containing a table where some of the cells included images. Of course, I used iTextSharp to do it. Because it has some obscure parts, I decided to publish a simplified version of the code I used.


using iTextSharp;
using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.text.html;

//...

protected void OnGeneratePdfClick()
{
	String text = "Multi\nline\ntext";
	String name = "Some Name";
	String number = "12345";
	Int32 rows = 7;
	Int32 cols = 3;
	Single headerHeight = 47f;
	Single footerHeight = 45f;
	Single rowHeight = 107.4f;
	String pdfName = String.Format("Labels - {0}", name);

	PdfPTable table = new PdfPTable(3) { WidthPercentage = 100, HeaderRows = 1 };

	PdfPCell headerCell = new PdfPCell(new Phrase("Header")) { Colspan = cols, FixedHeight = headerHeight, HorizontalAlignment = Element.ALIGN_CENTER, BorderWidth = 0f };
	table.AddCell(headerCell);

	FontFactory.RegisterDirectory(@"C:\WINDOWS\Fonts");	//required for the Verdana font

	Font cellFont = FontFactory.GetFont("Verdana", 6f, Font.NORMAL);

	for (Int32 r = 0; r < rows; ++r)
	{
		for (Int32 c = 0; c < cols; ++c)
		{
			PdfPCell cell = new PdfPCell() { HorizontalAlignment = Element.ALIGN_LEFT, FixedHeight = rowHeight, PaddingLeft = 20f, BorderWidth = 0f };
			iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(String.Concat(this.Server.MapPath("~/Images/"), number, ".gif"));
			image.ScalePercent(75, 75);

			foreach (String part in text.Split('\n'))
			{
				cell.AddElement(new Phrase(part, cellFont));
			}
	
			cell.AddElement(image);
			table.AddCell(cell);
		}
	}

	PdfPCell footerCell = new PdfPCell(new Phrase("Footer")) { Colspan = cols, FixedHeight = footerHeight, HorizontalAlignment = 	Element.ALIGN_CENTER, BorderWidth = 0f };
	table.AddCell(footerCell);

	Document doc = new Document(PageSize.A4, 0, 0, 0, 0);

	this.Response.Clear();
	this.Response.ContentType = "application/pdf";
	this.Response.ContentEncoding = Encoding.Default;
	this.Response.AddHeader("Content-Disposition", String.Format("attachment;filename={0}.pdf", pdfName));

	PdfWriter writer = PdfWriter.GetInstance(doc, this.Context.Response.OutputStream);

	doc.Open();
	doc.Add(table);
	doc.Close();
}

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