Remove special character from text file

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Hi I have this text "<set><value><name>" in a file, now I need to remove the character "<" and ">" which is in between the text. I’m trying with the below code:

C#

private void button1_Click(object sender, EventArgs e)
{
sr = new StreamReader(sam);
 textBox1.Text = sr.ReadLine();
string pattern = "\"(?=[<\"]+,)[>\"]+\"";
                string result = Regex.Replace(textBox1.Text, pattern, m => m.Value.Replace("<", " "));
                textBox2.Text = result;
sr.Close();
}

I’m confused with this regular expression and I’m getting the same output
"<set><value><name>"
please help....

Posted 24-Mar-12 3:34am

Member 8711310

Updated 16-Sep-17 20:38pm

MehdiNaseri

v3

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ProEnggSoft · Answer 1 · 2012-03-24T04:24:00

As seen from your question, you want to replace "<" and ">" with a space. For this purpose the following code can be used

C#

string fileText = System.IO.File.ReadAllText(filePath);
fileText = System.Text.RegularExpressions.Regex.Replace(fileText,"(\"<\"|\">\")"," ");
System.IO.File.WriteAllText(filePath,fileText);

George Swan · Answer 2 · 2017-09-16T20:38:00

Solution 4

C#

//This method is not really applicable in this case
// But it can be used when there are a lot of non-printable characters
//that need to be removed, such as control and formatting characters
public static string CleanText(string message, char[] prohibitedCharacters)
{
   List<char> messageList = message.ToCharArray().ToList();
   messageList.RemoveAll(c => (Array.IndexOf(prohibitedCharacters, c) != -1));
   string cleanedString = string.Join(string.Empty, messageList);
    return cleanedString;
}

Posted 16-Sep-17 20:38pm

George Swan

Comments

Graeme_Grant 17-Sep-17 3:24am

You have answered a 5-year-old question... did you mean to?

George Swan 17-Sep-17 3:35am

Whoops, sorry. Didn't realise. I'll leave it up as it may be useful. Best wishes, George.

George Swan 17-Sep-17 3:39am

I can see what has happened now. The OP updated his question.

CHill60 17-Sep-17 9:49am

Nope. A non - answer was posted and then deleted. OP'S update was back in 2012

George Swan 17-Sep-17 12:18pm

Ok, thanks. In any event, there was some activity that caused the question to get through my 'Active' filter.

Ganesan Senthilvel · Answer 3 · 2012-03-24T03:44:00

You can clear the special characters using the below customized function as:

C#

private static string GetCleanString (string src)
{
    int i = 0;
    while (i < src.Length)
    {
        if (src[i] < 32 || src[i] > 127)
        {
            int pos = CHAR_REPLACE_SRC.IndexOf(src[i]);
            if (pos >= 0)
                src = src.Replace(CHAR_REPLACE_SRC[pos], CHAR_REPLACE_DST[pos]);
            else
                src = src.Remove(i, 1);
        }
        else
            i++;
    }
    return src.Replace("\"", "").Replace("?", "").Replace(":", "").Replace("&", "_").Replace("\\", "_").Replace("/", "_");
}

Remove special character from text file

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