Extract plain text out of HTML page

  • Thread starter Thread starter Guogang
  • Start date Start date
G

Guogang

Hi,

I need to extract plain text from HTML page (i.e. do not show images, html
formatting, ...)

Is there some C# class/function that can help me on this?

Thanks,
Guogang
 
Hi,

The dumbest solution would probably be to employ a regular expression to cut
out any construct of a form
"<...>" from the HTML file. You could use the following RegExp:

<[^>]+>

to replace all tags with empty strings.
 
Hi,

I need to extract plain text from HTML page (i.e. do not show
images, html formatting, ...)

Is there some C# class/function that can help me on this?
Click to expand...

Guogang,

A regular expression can be used to strip out all HTML tags:

using System.Text.RegularExpressions;
...
string plainText = Regex.Replace(htmlText, "<[^>]+?>", "");

Hope this helps.

Chris.
 
Not familiar with the Regex class which may be more suitable, but you
could strip html tags with

int index = 0;

while((i = htmlPage.IndexOf("<")) != -1)
{
i = strip(i);
}

private int strip(int i)
{
int a = htmlPage.IndexOf("<", i);
int b = htmlPage.IndexOf(">", i);
if(a < b) // nested tags, so do a recursive loop
strip(a);
... // then you would add some code to strip away everything from i to b
}
 
Guogang said:
Hi,

I need to extract plain text from HTML page (i.e. do not show images, html
formatting, ...)

Is there some C# class/function that can help me on this?

Thanks,
Guogang
Click to expand...
You can try writing a simple XSL which transforms HTML to text. Of
course, for this to work , you need to make sure that the HTML is
well-formed. otherwise, use the other suggestions.
 
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