Help with Regular expressions

gjutras

Thanks for answering, but how does it work if the input is all in quotes i.e.

<a title="target this" href="http://www.google.com" target="_blank">http://www.google.com</a>

Thanks

you can either do a replace of " to ' which still makes valid html
or
on the input string use the  c# syntax of "" to represent a "

I just noticed a cut and paste error
string        stringToAdd = @">&nbsp;<img title='' height="10" alt='' hspace='0' src='/image/openNewWindow.gif' width='10' border='0' />&nbsp;";
shoudl be
string        stringToAdd = @"&nbsp;<img title='' height="10" alt='' hspace='0' src='/image/openNewWindow.gif' width='10' border='0' />&nbsp;";

and one more miss
make that
string        stringToAdd = @"&nbsp;<img title='' height='10' alt='' hspace='0' src='/image/openNewWindow.gif' width='10' border='0' />&nbsp;";

sorry, I work on too many languages "" is vb,  c# is \" to represent a "

RegexOptions   options = RegexOptions.IgnoreCase;
I forgot to ignore case which you were doing in your original regex.

gjutras
I've done this

but Im getting errors

string stringToAdd = @"&nbsp;<img title=\"\" height=\"10\" alt=\"\" hspace=\"0\" src=\"/image/openNewWindow.gif\" width=\"10\" border=\"0\" />&nbsp;";   // ; expected
   
      RegexOptions   options = RegexOptions.IgnoreCase;
      Regex          regex = new Regex(@"(target=[\"'](new|_blank).*?<\/a>)", options); // ) expected

      string         input = @"the quick brown fox jumped over the lazy dog";
      string         replacement = @"$!"+stringToAdd;
      string         result = regex.Replace(input, replacement);



As you can see I've also put

regex = new Regex(@"(target=[\"']    hoping that will sort out the quotes, but I still get errors. do you have any idea why this isnt working?

Thanks

try dropping the @ symbol (my bad) I also mad one slight change in the regex near /a
            string stringToAdd = "&nbsp;<img title=\"\" height=\"10\" alt=\"\" hspace=\"0\" src=\"/image/openNewWindow.gif\" width=\"10\" border=\"0\" />&nbsp;";   // ; expected
   
      RegexOptions   options = RegexOptions.IgnoreCase;
      Regex          regex = new Regex("(target=[\"'](new|_blank).*?<\\/a>)", options);

gjutras

I think its almost there, when I run the code below:

string stringToAdd = "&nbsp;<img title=\"\" height=\"10\" alt=\"\" hspace=\"0\" src=\"/image/openNewWindow.gif\" width=\"10\" border=\"0\" />&nbsp;";   // ; expected

      RegexOptions options = RegexOptions.IgnoreCase;
      Regex regex = new Regex("(target=[\"'](new|_blank).*?<\\/a>)", options);
      string input = "asdasdasdd <a href=\"http://www.google.com\" target=\"_blank\">asdasdsad</a> asdasdasdd<br /><a href=\"http://www.yahoo.com\" target=\"new\">asdasdas</a> sadsadsadadd <a href=\"http://www.itv.com\" target=\"_self\">asdddddd</a>";
      string replacement = @"$!"+stringToAdd;
      string result = regex.Replace(input, replacement);

////////////////////////////////

but the result is equal to

asdasdasdd <a href="http://www.google.com" $!&nbsp;<img title="" height="10" alt="" hspace="0" src="/image/openNewWindow.gif" width="10" border="0" />&nbsp; asdasdasdd<br /><a href="http://www.yahoo.com" $!&nbsp;<img title="" height="10" alt="" hspace="0" src="/image/openNewWindow.gif" width="10" border="0" />&nbsp; sadsadsadadd <a href="http://www.itv.com" target="_self">asdddddd</a>

This is wrong, as it should be

asdasdasdd <a href="http://www.google.com" target="_blank">asdasdsad</a> <img title="" height="10" alt="" hspace="0" src="/images/business/address_book.png" width="10" border="0" />&nbsp;asdasdasdd<br />
<a href="http://www.yahoo.com" target="_blank">asdasdas</a> <img title="" height="10" alt="" hspace="0" src="/images/business/address_book.png" width="10" border="0" />&nbsp;sadsadsadadd <a href="http://www.itv.com" target="_self">asdddddd</a>

Hope that makes sense? if not, please let me know
Mousemat24

string replacement = @"$!"+stringToAdd;
should be
string replacement = @"$1"+stringToAdd;

and my \\/a should be /a in the regex.  javascript needed \/ to represent / but c# doesn't need \ to escape it.

Hi mousemat24;;

If you have any questions about my last post please let me know.

Hi guys, both your attempts worked, but Im not to sure how I should split the points, I want to give both of you guys points, as you helped me BIG TIME!!

Would you guys be happy if I split the points 250/250?

Thanks for helping me out again

That is fine by me. I am glad it worked out for you. ;=)

same here, that's fine.

oooh man, this Assisted Solution / Accepted Solution is messed up guys, sorry

Not a problem, have a great day and thanks. ;=)