February 9, 2015 09:39 by
Peter
With this article, I will tell you about how to to read pdf document properties in ASP.NET 5. We know that there is no- such in-built class in .NET framework that read the pdf document. In this example,I will used third-party library iTextSharp. And here is the code that I used for this article:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="PdfPropertiesReader.aspx.cs" Inherits="PdfPropertiesReader" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<div id="pdfProperties" runat="server">
</div>
</div>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Read Pdf Properties" /> </form>
</body>
</html>
using System;
using System.Collections;
using System.Collections.Generic;
using iTextSharp.text;
using iTextSharp.text.pdf;
using System.Text;
public partial class PdfPropertiesReader : System.Web.UI.Page
{
private const string FileNmae = @"C:\\temp\\asp.pdf";
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
try
{
StringBuilder stringBuilder = new StringBuilder();
// create a reader (constructor overloaded for path to local file or URL)
PdfReader reader = new PdfReader(FileNmae);
// total number of pages
int n = reader.NumberOfPages;
// size of the first page
Rectangle psize = reader.GetPageSize(1);
float width = psize.Width;
float height = psize.Height;
Console.WriteLine("Size of page 1 of {0} => {1} × {2}", n, width, height);
// file properties
Hashtable infodict = reader.Info;
foreach (DictionaryEntry kvp in infodict)
{
stringBuilder.Append(kvp.Key + "=>" + kvp.Value + "</br>");
}
pdfProperties.InnerHtml = stringBuilder.ToString();
}
catch (Exception exception)
{
Response.Write(exception.Message);
}
}
}
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