The best way to parse an html file?

Hi,
I have a html file file that I want to parse with ASP.NET to retreive the
value of a custom tag. Let's say that the average html file is about 30 ko.
Once the html file is loaded and converted into a single string, I'm using
for now is two string.indexOf to find the begin and the end of the desired
tag and then a string.substring to extract the data. I'm not using regular
expressions since I know exactly what are the tags to find.
My function goes like this:
private string ParseHtml(string html)
{
html = html.Replace("\r\n","");
int begin = html.IndexOf("%%StartGetHtml%%");
int end = html.IndexOf("%%EndGetHtml%%",begin);
int begin2, end2;
string str = null;
if (begin > 0 && end > 0)
{
// Gets the beginning of the tag
begin2 = html.IndexOf("<",begin);
// Gets the end of the tag
end2 = html.IndexOf(">",end-3);
if (begin2 < end2 && end2 < end)
{
// Gets the tag
str = html.Substring(begin2,end-begin2);
}
}
return str;
}
Is this the fastest way or there could be a better way to do this?
Thanks
Stephane
Stephane wrote:

> I have a html file file that I want to parse with ASP.NET to retreive the
> value of a custom tag. Let's say that the average html file is about 30 ko
.
> Once the html file is loaded and converted into a single string, I'm using
> for now is two string.indexOf to find the begin and the end of the desired
> tag and then a string.substring to extract the data. I'm not using regular
> expressions since I know exactly what are the tags to find.
> My function goes like this:
> private string ParseHtml(string html)
> {
> html = html.Replace("\r\n","");
> int begin = html.IndexOf("%%StartGetHtml%%");
> int end = html.IndexOf("%%EndGetHtml%%",begin);
> int begin2, end2;
> string str = null;
> if (begin > 0 && end > 0)
> {
> // Gets the beginning of the tag
> begin2 = html.IndexOf("<",begin);
> // Gets the end of the tag
> end2 = html.IndexOf(">",end-3);
> if (begin2 < end2 && end2 < end)
> {
> // Gets the tag
> str = html.Substring(begin2,end-begin2);
> }
> }
> return str;
> }
> Is this the fastest way or there could be a better way to do this?
If those string processing attempts suffice for you then use them but in
general if you want to parse HTML you might want to check SGMLReader, see
http://www.gotdotnet.com/community/...uery=sgmlreader
Martin Honnen
http://JavaScript.FAQTs.com/

The best way to parse an html file?

Hi,

I have a html file file that I want to parse with ASP.NET to retreive the
value of a custom tag. Let's say that the average html file is about 30 ko.
Once the html file is loaded and converted into a single string, I'm using
for now is two string.indexOf to find the begin and the end of the desired
tag and then a string.substring to extract the data. I'm not using regular
expressions since I know exactly what are the tags to find.
My function goes like this:

private string ParseHtml(string html)
{
html = html.Replace("\r\n","");
int begin = html.IndexOf("%%StartGetHtml%%");
int end = html.IndexOf("%%EndGetHtml%%",begin);
int begin2, end2;
string str = null;
if (begin > 0 && end > 0)
{
// Gets the beginning of the tag
begin2 = html.IndexOf("<",begin);
// Gets the end of the tag
end2 = html.IndexOf(">",end-3);
if (begin2 < end2 && end2 < end)
{
// Gets the tag
str = html.Substring(begin2,end-begin2);
}
}
return str;
}

Is this the fastest way or there could be a better way to do this?

Thanks

Stephane
Stephane wrote:

> I have a html file file that I want to parse with ASP.NET to retreive the
> value of a custom tag. Let's say that the average html file is about 30 ko.
> Once the html file is loaded and converted into a single string, I'm using
> for now is two string.indexOf to find the begin and the end of the desired
> tag and then a string.substring to extract the data. I'm not using regular
> expressions since I know exactly what are the tags to find.
> My function goes like this:
> private string ParseHtml(string html)
> {
> html = html.Replace("\r\n","");
> int begin = html.IndexOf("%%StartGetHtml%%");
> int end = html.IndexOf("%%EndGetHtml%%",begin);
> int begin2, end2;
> string str = null;
> if (begin > 0 && end > 0)
> {
> // Gets the beginning of the tag
> begin2 = html.IndexOf("<",begin);
> // Gets the end of the tag
> end2 = html.IndexOf(">",end-3);
> if (begin2 < end2 && end2 < end)
> {
> // Gets the tag
> str = html.Substring(begin2,end-begin2);
> }
> }
> return str;
> }
> Is this the fastest way or there could be a better way to do this?

If those string processing attempts suffice for you then use them but in
general if you want to parse HTML you might want to check SGMLReader, see
http://www.gotdotnet.com/community/...uery=sgmlreader

--

Martin Honnen
http://JavaScript.FAQTs.com/

The first application gives server load error

I'm new to asp.net. Started following a book, I created a FirstApplication and when i try to run it on the browser it gives me the server parse error 'firstapplication.global file not loaded'. Error line 1.
I have not changed anything except for adding a header in the global.aspx file in between the form tags. also the application did'nt create the .vsdisco file. Heard vs2003 does'nt create one. Does it have to do anything with it. Help please!!!!!!!!!!!a header in global.aspx ?
global.aspx to my knowledge isnt used for anything other than writing
applicaiton onstart... on end... session on start and on end etc...
you just write methods for each in global file.
remove the header (cause i dont know y you are adding that header)
open the code file... gloabal.aspx.cs or vb

save the project... build it... and run it...

HTH

HD

"BSL" <anonymous@.discussions.microsoft.com> wrote in message
news:C4D05D3F-F9B6-44F2-B649-A78B81844844@.microsoft.com...
> I'm new to asp.net. Started following a book, I created a FirstApplication
and when i try to run it on the browser it gives me the server parse error
'firstapplication.global file not loaded'. Error line 1.
> I have not changed anything except for adding a header in the global.aspx
file in between the form tags. also the application did'nt create the
..vsdisco file. Heard vs2003 does'nt create one. Does it have to do anything
with it. Help please!!!!!!!!!!!