Question

I want to take the text and some special characters between the xml tags..
My input file contains:

<line>public static void main(String[] args)</line>
<line>{</line>
<line>   <>double <inline>result</inline> = Math.pow(2, 3);</line>
<line>   . . .</line>
<line>    </line> 'white space also comes
<line>}</line>

now i want the Regex to take text and the special characters between the tags <line>,<inline>..


Answer 1

Parsing it as an XML will fail because of the <> before “double”. I’d not use Regex for this either, but simple String.Replace will perform better or StringBuilder would be even better.
This works fine for me:

string test = @"<line>public static void main(String[] args)</line> 
    <line>{</line> 
    <line>   <>double <inline>result</inline> = Math.pow(2, 3);</line> 
    <line>   . . .</line> 
    <line>    </line> 'white space also comes 
    <line>}</line>
    ";

StringBuilder str = new StringBuilder(test);
new List<String>() { "<line>", "<inline>", "</line>", "</inline>" }.ForEach(token => str.Replace(token, String.Empty));
Console.WriteLine(str.ToString()); 

UPDATE:

with this it should work in .net 2.0 too:

StringBuilder str = new StringBuilder(test);
List<String> tokens = new List<String>();
tokens.Add("<line>");
tokens.Add("<inline>");
tokens.Add("</line>");
tokens.Add("</inline>");

foreach(String token in tokens)
{
    str.Replace(token, String.Empty);
}