Problem with strings

Question

Hi I am a beginner and I cannot solve this problem. I have a multilines textbox (txtOutput) that receive data from the serial port. I can see the data there and all its working fine. I would like to get the last string from such textbox that is something numeric like 12 or 1021 and store it into a variable. Then If the value I get is Can someone please help. I would really appreciate. Kind regards Felice

Vulpes · Answer

Try the following which on a button click gets all the numbers (including decimal and negative numbers) in the textbox identifies the last one and then compares it with 1000. This is done using a regular expression: using System.Text.RegularExpressions; // ..... private void button1_Click(object sender EventArgs e) { if (txtOutput.Text.Length > 0) { MatchCollection mc = Regex.Matches(txtOutput.Text @(\+|-)?\d+(\.\d+)?); if (mc.Count > 0) { double value = double.Parse(mc[mc.Count - 1].Value); if (value { textBox2.Text = value.ToString(); textBox3.Text = ; // if needed } else { textBox3.Text = value.ToString(); textBox2.Text = ; // if needed } } } }

Felice Massaro · Answer

Thanks a lot. It worked the first time without any problem. Your help has been really appreciated. Kind regards Felice