remove symbol "" 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. im 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();
}

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

Posted 24-Mar-12 3:36am

Member 8711310

Updated 24-Mar-12 3:39am

Ganesan Senthilvel

v2

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Ganesan Senthilvel · Answer 1 · 2012-03-24T03:41:00

Solution 1

Try the below code:

C#

string pattern = "\"([^\"]+)\"";
value = Regex.Match(textToSearch, pattern).Value;

string[] removalCharacters = {"\""}; //or any other characters
foreach (string character in removalCharacters)
{
    value = value.Replace(character, "");
}

Posted 24-Mar-12 3:41am

Ganesan Senthilvel

fct2004 · Answer 2 · 2012-03-27T19:43:00

We're only removing two characters, and we know which two they are. Using Regex seems a bit like overkill in this case. If you were removing a large variation of characters, then I would do a scan to create an index-map of which characters to remove, convert the string into an array, and use a for loop the skips any index in that map (most likely a HashSet<int>) to insert the character's into a string builder to avoid a O(n^2) situation. Yet, if this is only place where you're stripping out characters, then the following code is just fine.

private void button1_Click(object sender, EventArgs e)
{
    string s;

    try
    {
        using (StreamReader sr = new StreamReader(sam))
        {
            s = sr.ReadLine();
        }
    }
    catch
    {
        s = null;
    }

    textBox1.Text = s;

    if(s != null)
    {
        s = s.Replace("<", string.Empty);
        s = s.Replace(">", string.Empty);
    }

    textBox2.Text = s;
}