C# Read specific property from a log file

Question

In my M.U.G.E.N tournament program, I want to process the match results from the log file, that is created by the game. The log looks like this:

[Match 1]
totalmatches = 1
team1.1 = 
team2.1 = 
stage = stages/kowloon.def

[Match 1 Round 1]
winningteam = 1
timeleft = -1.00
p1.name = Knuckles the Echidna
p1.life = 269
p1.power = 0
p2.name = Shadow the Hedgehog
p2.life = 0
p2.power = 2684

[Match 1 Round 2]
winningteam = 2
timeleft = -1.00
p1.name = Knuckles the Echidna
p1.life = 0
p1.power = 1510
p2.name = Shadow the Hedgehog
p2.life = 586
p2.power = 2967

[Match 1 Round 3]
winningteam = 2
timeleft = -1.00
p1.name = Knuckles the Echidna
p1.life = 0
p1.power = 3000
p2.name = Shadow the Hedgehog
p2.life = 789
p2.power = 777

What I want is to process the last winningteam property to determine the result of the match. What is the most effective way to achieve this? (maybe with LINQ)

please provide "a way" that you already tried to use in order to achieve this. How are you reading the file? How do you get the different lines. — Gilad Green, Dec 03 '17 at 19:48
Possible duplicate of [Reading/writing an INI file](https://stackoverflow.com/questions/217902/reading-writing-an-ini-file) — Slai, Dec 03 '17 at 20:44

Olivier Jacot-Descombes · Accepted Answer · 2017-12-03T19:59:01.427

You can use File.ReadLines that returns an enumeration of lines as IEnumerable<string>.

// string path contains file path and file name.
string line = File.ReadLines(path)
    .LastOrDefault(ln => ln.StartsWith("winningteam ="));

Now split the string at =, trim the second part and you have the team number as string

if (line != null) {
    string team = line.Split('=')[1].Trim();
    // With "winningteam = 2", [0] = "winningteam ", [1] = " 2"

    // Optionally convert it to a number
    int teamNo = Int32.Parse(team);

    ...
}

C# Read specific property from a log file

1 Answers1