Hi Rahul48,
This solution worked for me:
private void processFile(SPItemEventProperties properties)
{
SPFile file = properties.ListItem.File;
if (file != null)
{
string filetype = System.IO.Path.GetExtension(file.Name);
if (filetype == ".pdf")
{
string fileNameAndPath = file.Web.Url + @"/" + file.Url;
using (PdfReader reader = new PdfReader(fileNameAndPath))
{
}
}
}
}