a way to ignore the rest of a string after a certain character??

[USBZ0r]

Hi guys, is there anything i can do to only read a certain part of a string, im reading an IP, but the IP contains the port like 127.0.0.1:80, but i dont want to include the ":80". i cant tell it how long the string is because the IP's change and the lengh varies. so i need to ignore anything after " : ".

Thanks

[PRR]

you could use indexof and substring method (for short strings)...

string filterChar = ":";
                string myLongString = @"Some where rrr :  sdfsdf";
                int inde = myLongString.IndexOf(":");
                if (inde > 0)// or not equal to -1 will do 
                {
                    string myShortString = myLongString.Substring(0, inde - 1);
                }

A better approach would be regular expression for larger string ...

[USBZ0r]

Thanks deepblue, appreciate it!

[jg007]

only just learning regex's but this seems to work , I am getting the value from textbox1 to test it

string RegexMatchString = @"(?<IP>\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3})";
            Regex testr = new Regex(RegexMatchString);
            Match matx = testr.Match(textBox1.Text);
            MessageBox.Show(matx.Groups["IP"].Value);

[jg007]

a bit simpler -

            string RegexMatchString = @"\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}";
            Regex testr = new Regex(RegexMatchString);
            MessageBox.Show(testr.Match(textBox1.Text).Value) ;