Files content based Searching

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I want to create a search engine for a web based application.i want to implement a content based searching. i.e. if the user searches using some text from some file as a keyword, the application should be able to find out that file. (just like the windows capability of "search for a file or folder using a word or a phrase contained in that file"). First thing, As of now I have the files in a folder on the server. Will the files have to be in a database to incorporate this. Or will I be able to incorporate the content based search capability even when the files are on a disk?
Can some one help me with example code??

I am using C# and ASP.NET.

Thanks.

Posted 15-Mar-13 2:53am

hinaiqbal

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[no name] 15-Mar-13 9:03am

Example code for what exactly? How to get a list of files in a directory?

hinaiqbal 15-Mar-13 9:09am

example code for searching the files when keywords entered in search box and the files which contains those keywords should be listed in the grid

[no name] 15-Mar-13 9:27am

So basically, you want someone to write all this code for you. Care to try again? Why not go try and do something and then come back here and ask a specific question about a specific programming problem.

hinaiqbal 15-Mar-13 9:34am

no i don't want that someone to write the whole code for me.. i just want that some one give me a basic idea of how to do it so that i can implement it

[no name] 15-Mar-13 9:41am

Then why did you ask for example code? That means you want someone to write this code for you. You already have the idea, get a list of files and put them in your grid. What exactly is the problem?

hinaiqbal 15-Mar-13 9:45am

the problem is to search the keywords from the files(i.e. the content of files) and the files which contains these keywords should be listed

[no name] 15-Mar-13 9:49am

Okay.... so how exactly is that a problem? You have to open the file and search the contents for your keywords. Open a file and reading the contents is a trivial operation....

hinaiqbal 15-Mar-13 9:56am

i dont want to open the file for reading the contents....(it might be that the application reads those contents in background but i dont know how to run the apps service n background?)..only file names that contains the keywords should be listed in grid

[no name] 15-Mar-13 10:05am

So in other words, you do not have a real concrete idea of what it is that you want to do. You just said, "content of files" and now you say you do not want the contents of the files. How can you expect good help if you keep changing your mind? In any case, if what are currently saying is true, again, getting a list of files is trivial. You have to put forth some sort of effort here you know.....

Nelek 15-Mar-13 9:18am

I would recommend you to specify a bit more what you want in the first instance. The thema is too wide to be answered here.

hinaiqbal 15-Mar-13 9:36am

i have saved my files in the database and also the keywords while uploading the files.now the problem is how to search those keyword from the files that are stored in database and list those files names in grid

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Gianmaria Gregori · Answer 1 · 2013-03-15T04:42:00

Your answer isn't trivial.
There are a lot of articles that deal with text search using db servers like SQL Server or using search engines like Solr.
Furthermore, there are problems related to the extraction of plain text from formatted files like pdf or office documents.
The following articles should be a starting point for a more in-depth reseach:
on Lucene.Net DotLucene: Full-Text Search for Your Intranet or Website using 37 Lines of Code[^]
on SorlNet Using Solr for Search with .NET(C#)[^]
on SQL Server SQL Full Text Search Programming[^] and SQL SERVER - 2008 - Creating Full Text Catalog and Full Text Search[^]