I want to replace number in two tag to double with regex in

I am bit confused writing the regex for finding the Text between the two delimiters

and replace the text with another text in c#,how to replace?

pop.txt:

Result of my code

25,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00

500

60,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00

my code:

string text = File.ReadAllText("pop.txt");

try

{

var matches = Regex.Matches(text, pattern);

var result = (from Match m in matches select (m.Groups[2].ToString())).ToList();

foreach (var item in result)

{

var a = Convert.ToDouble(item).ToString("#,##.00");

string s = String.Format("{0:0.##}", item);

//textBox4.Text += a + Environment.NewLine;

text = text.Replace(item,a);

}

catch (Exception ex)

{

// MessageBox.Show(ex.Message);

//return;

}

File.WriteAllText("resultat.txt", text);

Dear mohamed salim,

I think you are trying to replace the data with in html tags

So kindly try this below code

private string replaceString = "";
public string Parse(string content)
{
const string regTagName = @"<.[^>]*>";
Regex reg = new Regex(@"(" + regTagName + ")|(geekzilla)",
RegexOptions.IgnoreCase | RegexOptions.Multiline);
// this is what I'd like to replace the match with
replaceString = "$1";
// do the replace
content = reg.Replace(content, new MatchEvaluator(MatchEval));
return content;
}
protected string MatchEval(Match match)
{
if (match.Groups[1].Success)
{
// the tag
return match.ToString();
}
if (match.Groups[2].Success)
{
// the text we're interested in
return Regex.Replace(match.ToString(), "(.+)", replaceString);
}
// everything else
return match.ToString();
}

All the best

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

ankit srivastava9y ago
Dear mohamed salim,
I think you are trying to replace the data with in html tags
So kindly try this below code
private string replaceString = "";
public string Parse(string content)
{
    const string regTagName = @"<.[^>]*>";

    Regex reg = new Regex(@"(" + regTagName + ")|(geekzilla)",
                     RegexOptions.IgnoreCase | RegexOptions.Multiline);

    // this is what I'd like to replace the match with
    replaceString = "$1";

    // do the replace
    content = reg.Replace(content, new MatchEvaluator(MatchEval));

    return content;
}

protected string MatchEval(Match match)
{
    if (match.Groups[1].Success)
    {
        // the tag
        return match.ToString();
    }
    if (match.Groups[2].Success)
    {
        // the text we're interested in
        return Regex.Replace(match.ToString(), "(.+)", replaceString);
    }
    // everything else
    return match.ToString();
}
All the best
0