How can I get the value of a src from a string variable

Question

I have a string value that will have following declared value:

<img alt="Desert.jpg" src="/PublishingImages/Lists/Images/NewForm/Desert.jpg" width="174" style="BORDER: 0px solid; ">

The value will have different src value. what I would like to do is to grab the value inside src. I was thinkin of using substring but since the value inside src can varie I dont know how to accomplish this.

This is what I need /PublishingImages/Lists/Images/NewForm/Desert.jpg

Any kind of help is appreciated.

Looks like XML, so use an XML parser? – crashmstr Mar 10 '14 at 13:42 — crashmstr, Mar 10 '14 at 13:42
Yeah its data from a datatable class – Obsivus Mar 10 '14 at 13:44 — Obsivus, Mar 10 '14 at 13:44

score 2 · Answer 1 · answered Mar 10 '14 at 13:43

2

Use something like Regex.Match(yourString, "src=.*?\"") then do a substring from 5th character and remove the last quote. Regex might not be correct. You should get the idea.

answered Mar 10 '14 at 13:43

AbhinavRanjan

1,638
17
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This is not a regex that matches a valid html attribute – Sten Petrov Mar 10 '14 at 13:51
Your string will be most probably encoded. You need to take care of that. – AbhinavRanjan Mar 10 '14 at 13:53
My goal was to say that regex can be used here. I know there is one src and two double quotes. My regex is obviously not correct as i have accepted in the answer. – AbhinavRanjan Mar 10 '14 at 14:00

score 1 · Answer 2 · edited May 23 '17 at 12:21

1

Use HtmlAgilityPack to parse HTML:

var doc = new HtmlAgilityPack.HtmlDocument();
doc.Load(@"PathToFile"); // or use doc.LoadHtml to get it from a string
var imgHrefSrc = doc.DocumentNode.SelectSingleNode("//img").Attributes["src"];
string value = imgHrefSrc.Value; // /PublishingImages/Lists/Images/NewForm/Desert.jpg

How to use HTML Agility pack

edited May 23 '17 at 12:21

Community

1
1

answered Mar 10 '14 at 13:44

Tim Schmelter

450,073
74
686
939

score 1 · Answer 3 · answered Mar 10 '14 at 13:44

I suggest to use HtmlAgilityPack for parsing HTML (available from NuGet):

string html = "<img alt=\"Desert.jpg\" src=\"/PublishingImages/Lists/Images/NewForm/Desert.jpg\" width=\"174\" style=\"BORDER: 0px solid; \">";
var img = HtmlNode.CreateNode(html);
var src = img.Attributes["src"].Value;

Result:

"/PublishingImages/Lists/Images/NewForm/Desert.jpg"

score 0 · Answer 4 · answered Mar 10 '14 at 13:47

I know you want the answer in c# but here is a java code that parses your string and writes url into console:

public class HelloWorld{

     public static void main(String []args){
       String x= "<img alt=\"Desert.jpg\" src=\"/PublishingImages/Lists/Images/NewForm/Desert.jpg\" width=\"174\" style=\"BORDER: 0px solid; \">";
       String a=x.split(" ")[2].split("\"")[1];

           System.out.println(a);

     }
}

score 0 · Answer 5 · answered Mar 10 '14 at 13:50

You can use Regex as the simplest solution that doesn't require additional libraries you may or may not need otherwise:

Regex rx = new Regex("src\\s?=\\s?\"[^\"]*\"");
string x = "<img alt=\"Desert.jpg\" src=\"/PublishingImages/Lists/Images/NewForm/Desert.jpg\" width=\"174\" style=\"BORDER: 0px solid; \">";

Console.WriteLine(rx.IsMatch(x));

Note that this regex allows for whitespace between 'src', '=' and the quoted value and looks for both the opening and closing quote.

Khanh TO · Answer 6 · 2014-03-11T02:29:02.233

Try using regex as a lightweight solution.

Try this regex (tested on http://regexpal.com/):

src=\"([^\"]*)\"

And you could extract the string using captured group

Sample code:

string input = "<img alt=\"Desert.jpg\" src=\"/PublishingImages/Lists/Images/NewForm/Desert.jpg\" width=\"174\" style=\"BORDER: 0px solid; \">";
string pattern = "src=\"([^\"]*)\"";
string extractedString = Regex.Match(input, pattern).Groups[1].Value;

How can I get the value of a src from a string variable

6 Answers6