Get all src attribute values of img tag

Question

Hi ,

I have some data which is in html markup .

I need to get all the some text of src attribute value of img tag.

for e.g., 

<p>hello World </p><img src="OpenFile.aspx?Id=25" alt="" />

this is my first post.

<img alt=""  src="OpenFile.aspx?Id=43" />

Need to get Id value of src tags which has the same format as mentioned above.

Here I need 25, 43 .

Any help would be appreciated.

Thanks

Answer 1

Hi,

maybe

(?<=<img src="OpenFile\.aspx\?Id=)\d+

but I recommend to use HTML Agility Pack to extract the src-property of all img-tags and then use e.g.

(?<=\bId=)\w+

Greetings,

---

Wolfgang Kluge
gehirnwindung.de

Answer 2

Hi ,

 

 

The above regex did not work. there is a compilation error.

May  be meta characters need to be replaced with unicode/ascii format

like "  <=> \x22 

      . <=> \x2e

      ? <=> \x3f

 

I've replaced with unicode but even then throws error or match not found

Answer 3

Hi,

you always have to escape your strings (nearly everywhere) - but to have a chance to say how you have to do that, you have to provide at least the information, where you want it to do.

Is it a c# string, use e.g. a @"verbatim"-string and double every quotation mark

@"(?<=<img src=""OpenFile\.aspx\?Id=)\d+"

VB.NET: Same as c#, but without @ at the beginning.

Edit: There was a mistake in the pattern, too...

Greetings,

---

Wolfgang Kluge
gehirnwindung.de