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   Home » ASP.NET & Web Development » Extract first (n) number of paragraphs from a long text
       
Author Reply
Churchill A
posted 9 posts
since Jun 18, 2010 
from

Extract first (n) number of paragraphs from a long text

  Posted on: 24 Jul 2010       
I have a long text from the db and I would like a method to only output the first 3 paragraphs or something like that. Its retrieved from the database and has HTML codes too. How do I go about this?
ajay raju
posted  207 posts
since  Jan 18, 2010 
from 

 Re: Extract first (n) number of paragraphs from a long text
  Posted on: 24 Jul 2010        0  

hi friend,
in your select query use this below example Query
SELECT empID,empName,CASE WHEN LEN(Description) > 30 THEN  SUBSTRING(Description,0,25) + '....' ELSE Description END AS    Description  FROM emp
empID,Ename,Description are columns of my empo table.
if it helps you please check mark as accept answer.
Thanks. 
 
K.Ajay
Churchill A
posted  9 posts
since  Jun 18, 2010 
from 

 Re: Extract first (n) number of paragraphs from a long text
  Posted on: 24 Jul 2010        0  
thanx ajay, how does your query string check for existence of <P>? Does it go with those conventions or it just counts the strings/words passed and limits it?
Tina Thomas
posted  9 posts
since  Jul 12, 2010 
from 

 Re: Extract first (n) number of paragraphs from a long text
  Posted on: 24 Jul 2010        0  
If the objective is to extract first n paragraphs, then extract the whole text from the database, and use a regular expression to extract the desired text.
Churchill A
posted  9 posts
since  Jun 18, 2010 
from 

 Re: Extract first (n) number of paragraphs from a long text
  Posted on: 24 Jul 2010        0  
Tina I think ur getting it. Do you have a method I can use? Maybe some sample code I can implement?
Tina Thomas
posted  9 posts
since  Jul 12, 2010 
from 

 Re: Extract first (n) number of paragraphs from a long text
  Posted on: 24 Jul 2010        0  
It can definitely be achieved using a simple array split..

            string[] arrText = sText.Split('\n');
            foreach(string sExtractText in arrText)
           {
           }

Or using a regular expression like this:

// Regex comments .-> matches any single character except \n
// * -> matches preceeding character any number of times
//$-> end of the string

            Regex r = new Regex(@"(.*$)", RegexOptions.Multiline);
            Match m;
            string sExtract = "";

// This gives the groups of matched strings where the processing can be done
            for (m = r.Match(sText); m.Success; m = m.NextMatch())
            {
                sExtract = m.Groups[1].Value;
            }


Churchill A
posted  9 posts
since  Jun 18, 2010 
from 

 Re: Extract first (n) number of paragraphs from a long text
  Posted on: 24 Jul 2010        0  
Thanks a lot Tina:
Assuming I have
public string getSummary(string inputHTML){

}

Please help me construct that and return a string that has only the first 3 paragraphs,
Thanx.

Tina Thomas
posted  9 posts
since  Jul 12, 2010 
from 

 Re: Extract first (n) number of paragraphs from a long text
  Posted on: 24 Jul 2010   Accepted Answer     0  
public string getSummary(string inputHTML)
{
 string[] arrText = inputHTML.Split('\n');
 return arrText[0] + arrText[1]+ arr[Text2];
}
Churchill A
posted  9 posts
since  Jun 18, 2010 
from 

 Re: Extract first (n) number of paragraphs from a long text
  Posted on: 26 Jul 2010        0  
T2 Thanks so so much for that. It has really saved me some headache!
       
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