Substring from specific sign to sign

Question

I have a list of strings in format like this:

Web.WebClient.Areas.Scada.Services.IScadaManualOverrideService,Web.WebClient.TDMSWebApp

I need only the part from comma sign to the first dot sign. For example above it should return this string: IScadaManualOverrideService

Anyone has an idea how can I do this and get substrings if I have list of strings like first one?

Answer 1

Splitting strings is not what can be called effective solution. Sorry can't just pass nearby.

So here is another one

    string text = "Web.WebClient.Areas.Scada.Services.IScadaManualOverrideService,Web.WebClient.TDMSWebApp";
    var end = text.IndexOf(',');
    var start = text.LastIndexOf('.', end) + 1;
    var result = text.Substring(start, end - start);

Proof woof woof.

Bullet-proof version (ugly)

    string text = "IScadaManualOverrideService";
    //string text = "Services.IScadaManualOverrideService";
    //string text = "IScadaManualOverrideService,";
    //string text = "";
    var end = text.IndexOf(',');
    var start = text.LastIndexOf('.', (end == -1 ? text.Length - 1 : end)) + 1;
    var result = text.Substring(start, (end == -1 ? text.Length : end) - start);

Insert this if hacker attack is expected

if(text == null)
    return "Stupid hacker, die!";

Answer 2

from comma sign to the first dot sign

You mean from dot to comma?

You can split the string by comma first, then split by dot and take the last:

string text = "Web.WebClient.Areas.Scada.Services.IScadaManualOverrideService,Web.WebClient.TDMSWebApp";
string result = text.Split(',')[0].Split('.').Last(); // IScadaManualOverrideService

Answer 3

    string s = "Web.WebClient.Areas.Scada.Services.IScadaManualOverrideService,Web.WebClient.TDMSWebApp";
    string s1 = s.Substring(0, s.IndexOf(","));
    string s2 = s1.Substring(s1.LastIndexOf(".") + 1);

Answer 4

 string input = "Web.WebClient.Areas.Scada.Services.IScadaManualOverrideService,Web.WebClient.TDMSWebApp";
 int commaIndex = input.IndexOf(',');
 string remainder = input.Substring(0, commaIndex);
 int dotIndex = remainder.LastIndexOf('.');

 string output = remainder.Substring(dotIndex + 1);

This can be written a lot shorter, but for the explanation i think this is more clear

Answer 5

sampleString.Split(new []{','})[0].Split(new []{'.'}).Last()

Answer 6

string s = "Web.WebClient.Areas.Scada.Services.IScadaManualOverrideService,Web.WebClient.TDMSWebApp";
string subStr = new string(s.TakeWhile(c => c != ',').ToArray());
string last = new string(subStr.Reverse().TakeWhile(c => c != '.').Reverse().ToArray());
Console.WriteLine(last);  // output: IScadaManualOverrideService