ItsMods

//Create a new CFGFile instance
            CFGFile myCFG = new CFGFile("players2\\server.cfg");
            //Read the rcon password from server.cfg
            string rcon_password = myCFG.ReadDvar("rcon_password");
            //Set the rcon password to 'bananas'
            myCFG.WriteDvar("rcon_password", "bananas", false);

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
 
namespace ServerConfigurator
{
    class CFGFile
    {
        string path;
        public CFGFile(string file)
        {
            path = file;
        }
 
        public string ReadDvar(string dvar)
        {
            string[] lines = File.ReadAllLines(path);
            foreach (string line in lines)
            {
                try
                {
                    string[] split = line.Split(new string[] { " " }, StringSplitOptions.None);
                    if (split[1] == dvar)
                    {
                        string temp = "";
                        if (split.Length > 3)
                        {
                            int i = -1;
                            foreach (string f in split)
                            {
                                i++;
 
                                    if (i == split.Length+1)
                                        temp += f;
                                    else if(i > 1)
                                    {
                                        temp += f;
                                        temp += " ";
                                    }
                            }
                        }
                        else temp = split[2];
 
                        if (temp.StartsWith("\""))
                            return temp.Replace("\"", "");
                        else return temp;
                    }
                }
                catch { }
            }
            NotFound = true;
            return "";
        }
        public bool NotFound = false;
        public void WriteDvar(string dvar, string value, bool integer)
        {
            ReadDvar(dvar);
            if (NotFound)
            {
                StreamWriter sw = new StreamWriter(path, true);
                if (!integer) sw.WriteLine(string.Format("seta {0} \"{1}\"", dvar, value));
                else sw.WriteLine(string.Format("seta {0} {1}", dvar, value));
                sw.Close();
            }
            else
            {
                string[] lines = File.ReadAllLines(path);
                int i = -1;
                foreach (string line in lines)
                {
                    i++;
                    try
                    {
                        string[] split = line.Split(new string[] { " " }, StringSplitOptions.None);
                        if (split[1] == dvar || "\""+split[1]+"\"" == dvar)
                        {
                            if (integer) split[2] = value;
                            else split[2] = "\"" + value + "\"";
 
                            lines[i] = string.Format("{0} {1} {2}", split[0], split[1], split[2]);
                            File.Delete(path);
                            StreamWriter sw = new StreamWriter(path);
                            foreach (string l33t in lines)
                            {
                                sw.WriteLine(l33t);
                            }
                            sw.Close();
                            break;
                        }
                    }
                    catch
                    {
                    }
                }
            }
 
            NotFound = false;
        }
    }
}