Search a for values in a string

Question

Hi All I'm looking for a good method of searching a string for a value if the string was all numbers I would use a Convert.ToInt16() (or 32 depending on value) but this time the string in question is 2.08.08 if this is Converted with a ToInt() method it will error as the decimal is used twice. The reason I can't use a substring() method to chop off the first is it is a version number so all the digits are important. I could use a foreach loop to remove the stops and then convert the string (2.08.08 would become 20808) and use it like that: foreach (string subString in USB_Version.Split(Stop)) { output += subString + ;; count++; if (count == 3) { Version_Number = subString; break; } Would this be good method or is there (as usual) a method I am not aware of?? Glenn

Vulpes · Answer

If you want to isolate all three components of the version individually then you can use the String.Split method with '.' as the separator and then convert the resulting array of strings to an array of ints. However if you don't need the individual components then you can simply use String.Replace to replace the dots with empty strings.

Glenn Patton · Answer

That's pretty much my what I had. (I am learning something!!) Thanks Glenn

Glenn Patton · Answer

That's pretty much my what I had. (I am learning something!!) Thanks Glenn

Vulpes · Answer

Yes here's my suggested code (untested): private void button1_Click(object sender EventArgs e) { string CheckAgainst = 2.08.08; const string Stop = .; CheckAgainst = CheckAgainst.Replace(Stop ); string Checkee = textBox1.Text.Trim().Replace(Stop ); int intCheckAgainst = int.Parse(CheckAgainst); int intCheckee; int.TryParse(Checkee out intCheckee); // intCheckee will be 0 if input is invalid if (intCheckee == intCheckAgainst) { MessageBox.Show(Hows that!); } else if (intCheckee { MessageBox.Show(Too Low!); } else { MessageBox.Show(Too High!); } }

Glenn Patton · Answer

String.Replace(.); gives the required answer thanks!

Glenn Patton · Answer

Okay....Thanks for that in the mean time I have been hacking to produce the following (it's test code don't worry!) private void button1_Click(object sender EventArgs e) { string CheckAgainst = 2.08.08; string Checkee = null; int intCheckAgainst = 0; int intCheckee = 0; int count = 0; string output = null; const char Stop = '.'; string Version_Number = null; Checkee = textBox1.Text; foreach (string subString in CheckAgainst.Split(Stop)) { output += subString; count++; if (count == 3) { Version_Number = output; break; } } textBox2.Text = Version_Number; intCheckAgainst = Convert.ToInt16(textBox2.Text); intCheckee = Convert.ToInt16(textBox1.Text); if (intCheckee == intCheckAgainst) { MessageBox.Show(Hows that!); } else { //intCheckee = Convert.ToInt16(textBox1.Text); //MessageBox.Show(intCheckee.ToString()); if (intCheckAgainst { MessageBox.Show(Too Low!); }else if (intCheckAgainst > intCheckee) { MessageBox.Show(Too High!); } else { MessageBox.Show(Ooh Dear!); } } } private void button2_Click(object sender EventArgs e) { string Checkee = 2.08.08; string output = null; int count = 0; //int intCheckAgainst = 0; string Version_Number = null; const char Stop = '.'; // MessageBox.Show(CheckAgainst); foreach (string subString in Checkee.Split(Stop)) { output += subString; count++; if (count == 3) { Version_Number = output; break; } } //MessageBox.Show(Version_Number.ToString()); textBox1.Text = Version_Number; } The string.Replace method needs looking at thanks! Glenn