示例#1
0
        /// <summary>
        /// Created this method to update the teacher’s details based on provided teacher’s ID in text file
        /// </summary>
        /// <param name="teacherDetail"></param>
        /// <returns></returns>

        public bool Update(TeacherDetail teacherDetail)
        {
            bool returnVal = false;

            try
            {
                if (!File.Exists(filePath))
                {
                    Console.WriteLine("File is not Exist");
                    return(false);
                }
                else
                {
                    if (!File.ReadAllText(filePath).Contains(teacherDetail.tId.ToString()))
                    {
                        Console.WriteLine("This ID is NOT exist, please enter a valid ID.");
                        return(false);
                    }
                    else
                    {
                        DataTable    table             = new DataTable();
                        var          fileContents      = File.ReadAllLines(filePath);
                        var          splitFileContents = (from f in fileContents select f.Split(',')).ToArray();
                        StreamWriter OurStream;
                        File.Delete(filePath);
                        foreach (var line in splitFileContents)
                        {
                            if (!string.IsNullOrWhiteSpace(line[0]))
                            {
                                if (line[0] == teacherDetail.tId.ToString())
                                {
                                    line[1] = teacherDetail.tName;
                                    line[2] = teacherDetail.className;
                                    line[3] = teacherDetail.section.ToString();
                                }
                                OurStream = File.AppendText(filePath);
                                OurStream.WriteLine(line[0] + "," + line[1] + "," + line[2] + "," + line[3]);
                                OurStream.Close();
                            }
                        }
                        Console.WriteLine("Records is updated successfully.......");
                        return(false);
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            return(returnVal);
        }
示例#2
0
        /// <summary>
        /// Created this method to retrieve the teacher’s details based on provided  teacher’s ID from text file
        /// </summary>
        /// <param name="ID"></param>
        /// <returns></returns>
        public TeacherDetail Retrieve(int ID)
        {
            TeacherDetail teacherDetail = new TeacherDetail();

            try
            {
                if (!File.Exists(filePath))
                {
                    Console.WriteLine("File is not Exist");
                    return(teacherDetail);
                }
                else
                {
                    if (!File.ReadAllText(filePath).Contains(ID.ToString()))
                    {
                        Console.WriteLine("This ID is NOT exist, please enter a valid ID to retrieve the data.");
                    }
                    else
                    {
                        DataTable table             = new DataTable();
                        var       fileContents      = File.ReadAllLines(filePath);
                        var       splitFileContents = (from f in fileContents select f.Split(',')).ToArray();
                        foreach (var line in splitFileContents)
                        {
                            if (!string.IsNullOrWhiteSpace(line[0]))
                            {
                                if (line[0] == ID.ToString())
                                {
                                    teacherDetail.tName     = line[1];
                                    teacherDetail.className = line[2];
                                    teacherDetail.section   = Convert.ToChar(line[3]);
                                }
                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }

            return(teacherDetail);
        }
示例#3
0
        /// <summary>
        /// Created this method to store the teacher’s details in text file.
        /// </summary>
        /// <param name="teacherDetail"></param>
        /// <returns></returns>

        public bool Store(TeacherDetail teacherDetail)
        {
            try
            {
                if (File.Exists(filePath))
                {
                    if (File.ReadAllText(filePath).Length > 0)
                    {
                        if (File.ReadAllText(filePath).Contains(teacherDetail.tId.ToString()))
                        {
                            Console.WriteLine("This ID is already exist, please enter a new ID.");
                        }
                        return(false);
                    }
                    else
                    {
                        StreamWriter OurStream;
                        OurStream = File.AppendText(filePath);
                        OurStream.WriteLine(teacherDetail.tId
                                            + ","
                                            + teacherDetail.tName
                                            + ","
                                            + teacherDetail.className
                                            + ","
                                            + teacherDetail.section);
                        OurStream.Close();
                        Console.WriteLine("Record is stored successfully........");
                        return(true);
                    }
                }
                else
                {
                    FileCreation();
                    Store(teacherDetail);
                    return(false);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            return(true);
        }
示例#4
0
        static void Main(string[] args)
        {
            string folderName = @"c:\Teachers_Data";
            string pathString = System.IO.Path.Combine(folderName);

            System.IO.Directory.CreateDirectory(pathString);

            char continueOrNot = 'Y';
            int  option        = 0;
            TeachersDataModification teachersData  = new TeachersDataModification();
            TeacherDetail            teacherDetail = new TeacherDetail();

            Console.WriteLine("----------------------------------------------------------------");
            Console.WriteLine("This is a Rainbow School Teacher's Data Management Application.");
            Console.WriteLine("----------------------------------------------------------------");
            try
            {
                while (char.ToUpper(continueOrNot) == 'Y')
                {
                    Console.WriteLine("Select an option to perform:");
                    Console.WriteLine("1. Store the teacher's data");
                    Console.WriteLine("2. Update the teacher's data");
                    Console.WriteLine("3. Retrieve a teacher's data");
                    Console.WriteLine("4. Retrieve complete data");
                    Console.WriteLine(">>>>> Please type a number (1 or 2 or 3 or 4) to perform the action??");
                    try
                    {
                        option = Convert.ToInt32(Console.ReadLine());
                        if (option == 1)
                        {
                            Console.WriteLine(">>>>> Please Enter the Teacher's data to store");
                            Console.WriteLine(">> Teacher ID:");
                            teacherDetail.tId = Convert.ToInt32(Console.ReadLine());
                            Console.WriteLine(">> Teacher Name:");
                            teacherDetail.tName = Console.ReadLine();
                            Console.WriteLine(">> Teacher Classname:");
                            teacherDetail.className = Console.ReadLine();
                            Console.WriteLine(">> Teacher section:");
                            teacherDetail.section = Convert.ToChar(Console.ReadLine());
                            bool result = teachersData.Store(teacherDetail);
                        }
                        else if (option == 2)
                        {
                            Console.WriteLine(">>>>> Please Enter the Teacher's data to update (record will update based on the ID)");
                            Console.WriteLine(">> Teacher ID:");
                            teacherDetail.tId = Convert.ToInt32(Console.ReadLine());
                            Console.WriteLine(">> Teacher Name:");
                            teacherDetail.tName = Console.ReadLine();
                            Console.WriteLine(">> Teacher Classname:");
                            teacherDetail.className = Console.ReadLine();
                            Console.WriteLine(">> Teacher section:");
                            teacherDetail.section = Convert.ToChar(Console.ReadLine());
                            bool result = teachersData.Update(teacherDetail);
                        }
                        else if (option == 3)
                        {
                            Console.WriteLine(">>>>> Please Enter the Teacher's ID to Retrive the details");
                            Console.WriteLine(">> Teacher ID:");
                            int Id = Convert.ToInt32(Console.ReadLine());
                            teacherDetail = teachersData.Retrieve(Id);
                            if (!string.IsNullOrEmpty(teacherDetail.tName))
                            {
                                Console.WriteLine(">> >> Retrived Teacher Name is :" + teacherDetail.tName);
                                Console.WriteLine(">> >> Retrived Teacher Class(section) is :" + teacherDetail.className + "(" + teacherDetail.section + ")");
                            }
                            else
                            {
                                //Console.WriteLine("No record found");
                            }
                        }
                        else if (option == 4)
                        {
                            teachersData.RetrieveAll();
                        }
                        else
                        {
                            Console.WriteLine(">> invalid option, Please select a valid option from 1 , 2, 3 or 4 .....");
                        }
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine(ex.Message);
                    }
                    Console.WriteLine(">> >> >> Do you want to continue ? Y/N");
                    continueOrNot = Convert.ToChar(Console.ReadLine());
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            finally
            {
                Console.WriteLine(">> >> Thank you !!! << <<");
                Console.WriteLine("Please press Enter to close this window ...................");
                Console.ReadKey();
            }
        }