Here is an example of the string that can be dynamically build.
{Static String} <a href="{Dynamic Value}"><b>{Dynamic Value 2}</b></a>
example of static text <a href="http://www.exampleurl.com">example value</a>
How with in C# using Regex to find {Dynamic Value 2} or example value?
You would use something like this:
using System.Text.RegularExpressions;
private string ExtractString(string sourceString)
{
// (?<=string) is positive look-behind where you search for string before the match.
// .* is all characters in between.
// (?=string) is positive look-ahead where you search for string after the match.
string pattern = "(?<=<a.*?>).*(?=</a)";
Match match = Regex.Match(sourceString, pattern);
return match.Value;
}
Of course, you should be implementing some kind of exception handling mechanism.
Note that this will return
<b>{Dynamic Value 2}</b>
if parsing
<a href="{Dynamic Value}"><b>{Dynamic Value 2}</b></a>
You can process the string further with other regex patterns if needed.
Try this, you will get your desired result.
string Actualstring = "{static string}<a href='{Dynamic Value}'><b>{Dynamic Value 2}</b></a>" string prevSplitBy = {static string};string desiredstring="";
string FirstSplitBy = "<b>";
string SecondSplitBy = "</b>";
Regex regexprevSplit = new Regex(prevSplitBy );Regex regexFirstSplit = new Regex(FirstSplitBy);
Regex regexSecondSplit = new Regex(SecondSplitBy);
string[] StringprevSplit = regexprevSplit.Split(Actualstring );string[] StringFirstSplit = regexFirstSplit.Split(StringprevSplit[1] );
string[] StringSecondSplit = regexSecondSplit.Split(StringFirstSplit[1]); if(StringSecondSplit!=null){ for(int i=0 ; i <StringSecondSplit.count-1;i++)desiredstring=desiredstring+StringSecondSplit[i] }
desiredstring will have your desired string.
{Static String} <a href="{Dynamic Value}"><b>{Dynamic Value 2}</b></a>
is well parsed with something like
Regex parser = new Regex(
@"*?\<a href\=\""(?<value1>[^\""]*)\""\>\<b\>(?<value2>[^\<]*)\<\/b\>\<\/a\>");
XElement el = XElement.Parse("<a>your long html string to parse</a>").Element("a");
string v1 = el.Attribute("href").Value;
string v2 = el.Element("b").Value;
People on stackoverflow seem to be suggesting http://htmlagilitypack.codeplex.com/ for parsing html and extracting values from it. It is more fault tolerant than using a regex. If using a regex you will have to change the regex if anything is changed in the strings you search.
