yes

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Text.RegularExpressions;

namespace Task_Manager
{
    public partial class Check_Time : Form
    {
        public Check_Time()
        {
            InitializeComponent();
        }

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = !(char.IsDigit(e.KeyChar) || e.KeyChar == (char)Keys.Back || char.IsControl(e.KeyChar));
        }

        private void Check_Time_Load(object sender, EventArgs e)
        {
            listBox1.Items.AddRange(File.ReadAllLines("Tasks/" + Login.username + ".txt"));
            if(!File.Exists("Otcheti.txt"))
            {
                File.Create("Otcheti.txt").Close();
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            StreamWriter a = new StreamWriter("Otcheti.txt");
            string zaglavie=Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[1].ToString();
            DateTime date = DateTime.Now;
            string format = "dd.MM.yyyy";
            string data = date.ToString(format);
            a.WriteLine("Task:" + zaglavie + " " + "User:" + Login.username + " " + "Time:" + textBox1.Text + " " + "Date:" + data);
            a.Close();
            MessageBox.Show("Времето е отчетено успешно!");
            this.Close();
        }
    }
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Text.RegularExpressions;

namespace Task_Manager
{
    public partial class Comment_Add : Form
    {
        public Comment_Add()
        {
            InitializeComponent();
        }

        private void Comment_Add_Load(object sender, EventArgs e)
        {
            listBox1.Items.AddRange(File.ReadAllLines("Tasks/" + Login.username + ".txt"));
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string zaglavie = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[1].ToString();
            StreamWriter comment = new StreamWriter("Comments/"+zaglavie+".txt",true);
            comment.WriteLine(Login.username+":"+ richTextBox1.Text);
            comment.Close();
            MessageBox.Show("Успешно добавен коментар.");
            this.Close();
        }

        private void richTextBox1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
                e.SuppressKeyPress = true;
        }
    }
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Text.RegularExpressions;

namespace Task_Manager
{
    public partial class Comments_Look : Form
    {
        public Comments_Look()
        {
            InitializeComponent();
        }

        private void Comments_Look_Load(object sender, EventArgs e)
        {
            listBox1.Items.AddRange(File.ReadAllLines("Tasks/" + Login.username + ".txt"));
            listBox1.SelectedIndex = 0;
        }

        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            string zaglavie = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[1].ToString();
            StreamReader comment = new StreamReader("Comments/"+zaglavie+".txt");
            richTextBox1.Text = comment.ReadToEnd();
            comment.Close();
        }
    }
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Text.RegularExpressions;

namespace Task_Manager
{
    public partial class Login : Form
    {
        public static string username = null;
        public static bool admin = false;
        public static string regex = @"\bUsername:([a-zA-Z0-9]+)\s*Password:([a-zA-Z0-9_]+)\s*(true)?(false)?";
        public Login()
        {
            InitializeComponent();
        }
        private void button2_Click(object sender, EventArgs e)
        {
            Register a = new Register();
            a.ShowDialog();
        }

        private void button1_Click(object sender, EventArgs e)
        {
                StreamReader a = new StreamReader("Accounts.txt", true);
                string check = a.ReadToEnd();
                Regex rg = new Regex(regex);
                MatchCollection matches = rg.Matches(check);
                foreach (Match m in matches)
                {
                    if (textBox1.Text == m.Groups[1].ToString())
                    {
                        a.Close();
                        StreamReader b = new StreamReader("Accounts.txt", true);
                        if (textBox2.Text == m.Groups[2].ToString())
                        {
                            MessageBox.Show("Логин успешен!");
                            username = textBox1.Text;
                            if (m.Groups[3].ToString() == "true")
                            {
                                admin = true;
                            }
                            this.Close();
                            break;
                        }
                        b.Close();
                    }
                }
                if (username == null)
                {
                    MessageBox.Show("Грешно име или парола!", "Грешка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                a.Close();
            }

        private void Login_Load(object sender, EventArgs e)
        {
            if(!File.Exists("Accounts.txt"))
            {
                File.Create("Accounts.txt").Close();
            }
            if (!Directory.Exists("Comments"))
            {
                Directory.CreateDirectory("Comments");
            }
            if (!Directory.Exists("Tasks"))
            {
                Directory.CreateDirectory("Tasks");
            }
        }
    }
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Task_Manager
{
    public partial class Main : Form
    {
        public Main()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Login a = new Login();
            a.ShowDialog();
            if(Login.username==null)
            {
                MessageBox.Show("Не сте в системата!");
                Application.Exit();
            }
        }

        private void добавиToolStripMenuItem2_Click(object sender, EventArgs e)
        {
            Users_Add a = new Users_Add();
            if(Login.admin==false)
            {
                MessageBox.Show("Това меню е само за админи!","Грешка",MessageBoxButtons.OK,MessageBoxIcon.Error);
            }
            else
            {
                a.ShowDialog();
            }
        }

        private void редактирайToolStripMenuItem1_Click(object sender, EventArgs e)
        {
            Users_Change a = new Users_Change();
            if (Login.admin == false)
            {
                MessageBox.Show("Това меню е само за админи!", "Грешка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else
            {
                a.ShowDialog();
            }
        }

        private void изтрийToolStripMenuItem1_Click(object sender, EventArgs e)
        {
            Users_Delete a = new Users_Delete();
            if (Login.admin == false)
            {
                MessageBox.Show("Това меню е само за админи!", "Грешка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else
            {
                a.ShowDialog();
            }
        }

        private void прегледайToolStripMenuItem2_Click(object sender, EventArgs e)
        {
            Users_Look a = new Users_Look();
            if (Login.admin == false)
            {
                MessageBox.Show("Това меню е само за админи!", "Грешка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else
            {
                a.ShowDialog();
            }
        }

        private void добавиToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Tasks_Create a = new Tasks_Create();
            a.ShowDialog();
        }

        private void прегледайToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Tasks_Look a = new Tasks_Look();
            a.ShowDialog();
        }

        private void изтрийToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Tasks_Delete a = new Tasks_Delete();
            a.ShowDialog();
        }

        private void редактирайToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Tasks_Change a = new Tasks_Change();
            a.ShowDialog();
        }

        private void отчетиВремеПоЗадачаToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Check_Time a = new Check_Time();
            a.ShowDialog();
        }

        private void добавиToolStripMenuItem1_Click(object sender, EventArgs e)
        {
            Comment_Add a = new Comment_Add();
            a.ShowDialog();
        }

        private void прегледайToolStripMenuItem1_Click(object sender, EventArgs e)
        {
            Comments_Look a = new Comments_Look();
            a.ShowDialog();
        }

    }
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Text.RegularExpressions;

namespace Task_Manager
{
    public partial class Register : Form
    {
        public Register()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
                StreamReader b = new StreamReader("Accounts.txt", true);
                if (textBox1.TextLength < 3 || textBox1.TextLength > 12)
                {
                    MessageBox.Show("Името трябва да е между 3 и 12 символа!", "Грешка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                else if (textBox2.TextLength < 3 || textBox2.TextLength > 12)
                {
                    MessageBox.Show("Паролата трябва да е между 3 и 12 символа!", "Грешка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                else if (textBox1.Text == Regex.Match(b.ReadToEnd(), Login.regex).Groups[1].ToString())
                {
                    MessageBox.Show("Вече съществува такова име!", "Грешка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                else
                {
                    b.Close();
                    StreamWriter a = new StreamWriter("Accounts.txt", true);
                    if (checkBox1.Checked)
                    {
                        a.WriteLine("Username:" + textBox1.Text + " " + "Password:" + textBox2.Text + " " + "true");
                    }
                    else
                    {
                        a.WriteLine("Username:" + textBox1.Text + " " + "Password:" + textBox2.Text + " " + "false");
                    }
                    a.Close();
                    File.Create("Tasks/" + textBox1.Text + ".txt").Close();
                    MessageBox.Show("Регистрацията е успешна!");
                    this.Close();
                }
                b.Close();
        }

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = !(char.IsLetterOrDigit(e.KeyChar) || e.KeyChar == (char)Keys.Back);
        }

        private void textBox2_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = !(char.IsLetterOrDigit(e.KeyChar) || e.KeyChar == (char)Keys.Back);
        }

        private void Register_Load(object sender, EventArgs e)
        {
            if (!File.Exists("Accounts.txt"))
            {
                File.Create("Accounts.txt").Close();
            }
        }
    }
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Text.RegularExpressions;

namespace Task_Manager
{
    public partial class Tasks_Change : Form
    {
        public static string proverka = "";
        public static string creator = "";
        public Tasks_Change()
        {
            InitializeComponent();
        }

        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if(listBox1.SelectedIndex>=0 && listBox1.SelectedItem!=null)
            {
                textBox1.Text = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[1].ToString();
                textBox2.Text = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[2].ToString();
                textBox3.Text = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[3].ToString();
                comboBox1.SelectedItem = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[4].ToString();
                textBox4.Text = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[5].ToString();
                textBox5.Text = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[6].ToString();
                DateTime date = DateTime.Now;
                string format = "dd.MM.yyyy";
                textBox6.Text = date.ToString(format);
                comboBox2.SelectedItem = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[8].ToString();
                proverka = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[8].ToString();
                creator = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[5].ToString();
            }
        }

        private void Tasks_Change_Load(object sender, EventArgs e)
        {
            listBox1.Items.AddRange(File.ReadAllLines("Tasks/" + Login.username + ".txt"));
            comboBox2.Items.Add("Waiting");
            comboBox2.Items.Add("Finished");
            StreamReader b = new StreamReader("Accounts.txt");
            string da = b.ReadLine();
            while (da != null)
            {
                comboBox1.Items.Add(Regex.Match(da, Login.regex).Groups[1].ToString());
                da = b.ReadLine();
            }
            b.Close();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            StreamReader haha = new StreamReader("Tasks/Zadachi.txt");
            if (textBox1.Text == null || textBox2.Text == null || textBox3.Text == null || comboBox1.SelectedItem == null || comboBox2.SelectedItem == null)
            {
                MessageBox.Show("Трябва да попълните всички полета!", "Грешка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else if (textBox1.Text == Regex.Match(haha.ReadToEnd(), Tasks_Create.task_regex).Groups[1].ToString())
            {
                MessageBox.Show("Вече има задача с такова име!", "Грешка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else if (comboBox2.SelectedItem.ToString() != proverka && richTextBox1.Text == "")
            {
                MessageBox.Show("След като сте променили статуса на задачата, трябва да добавите коментар!", "Грешка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else
            {
                haha.Close();
                int counter = 0;
                string prevrespuser = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[4].ToString();
                string newrespuser = comboBox1.SelectedItem.ToString();
                if (prevrespuser != newrespuser && prevrespuser!=creator)
                {
                    StreamReader n = new StreamReader("Tasks/" + prevrespuser + ".txt");
                    while (n.ReadLine() != null)
                    {
                        counter++;
                    }
                    n.Close();
                    string[] masivche = new string[counter];
                    StreamReader s = new StreamReader("Tasks/" + prevrespuser + ".txt");
                    for (int i = 0; i < masivche.Length; i++)
                    {
                        masivche[i] = s.ReadLine().ToString();
                        if (masivche[i] == listBox1.SelectedItem.ToString())
                        {
                            masivche[i] = null;
                        }
                    }
                    s.Close();
                    File.Delete("Tasks/" + prevrespuser + ".txt");
                    File.Create("Tasks/" + prevrespuser + ".txt").Close();
                    StreamWriter v = new StreamWriter("Tasks/" + prevrespuser + ".txt", true);
                    for (int i = 0; i < masivche.Length; i++)
                    {
                        if (masivche[i] != null)
                        {
                            v.WriteLine(masivche[i]);
                        }
                    }
                    v.Close();
                }
                int br2 = 0;
                StreamReader b = new StreamReader("Tasks/" + newrespuser + ".txt");
                while (b.ReadLine() != null)
                {
                    br2++;
                }
                if (br2 == 0)
                {
                    br2++;
                }
                b.Close();
                string[] temp = new string[br2];
                if (newrespuser == prevrespuser)
                {
                    StreamReader da = new StreamReader("Tasks/" + newrespuser + ".txt");
                    for (int i = 0; i < temp.Length; i++)
                    {
                        temp[i] = da.ReadLine().ToString();
                        if (temp[i] == listBox1.SelectedItem.ToString())
                        {
                            temp[i] = "Name:" + textBox1.Text + " " + "Description:" + textBox2.Text + " " + "Grade:" + textBox3.Text + " " + "ResponsibleUser:" + comboBox1.SelectedItem.ToString() + " " + "Creator:" + textBox4.Text + " " + "DateCreation:" + textBox5.Text + " " + "DateChange:" + textBox6.Text + " " + "Status:" + comboBox2.SelectedItem.ToString();
                        }
                    }
                    da.Close();
                    b.Close();
                    File.Delete("Tasks/" + newrespuser + ".txt");
                    File.Create("Tasks/" + newrespuser + ".txt").Close();
                    StreamWriter c = new StreamWriter("Tasks/" + newrespuser + ".txt", true);
                    for (int i = 0; i < temp.Length; i++)
                    {
                        if (temp[i] != "")
                        {
                            c.WriteLine(temp[i]);
                        }
                    }
                    c.Close();
                }
                else
                {
                    StreamWriter g = new StreamWriter("Tasks/" + newrespuser + ".txt",true);
                    g.WriteLine("Name:" + textBox1.Text + " " + "Description:" + textBox2.Text + " " + "Grade:" + textBox3.Text + " " + "ResponsibleUser:" + comboBox1.SelectedItem.ToString() + " " + "Creator:" + textBox4.Text + " " + "DateCreation:" + textBox5.Text + " " + "DateChange:" + textBox6.Text + " " + "Status:" + comboBox2.SelectedItem.ToString());
                    g.Close();
                }
                int br = 0;
                StreamReader ne = new StreamReader("Tasks/Zadachi.txt");
                while (ne.ReadLine() != null)
                {
                    br++;
                }
                ne.Close();
                string[] hue = new string[br];
                StreamReader d = new StreamReader("Tasks/Zadachi.txt");
                for (int i = 0; i < hue.Length; i++)
                {
                    hue[i] = d.ReadLine().ToString();
                    if (hue[i] == listBox1.SelectedItem.ToString())
                    {
                        hue[i] = "Name:" + textBox1.Text + " " + "Description:" + textBox2.Text + " " + "Grade:" + textBox3.Text + " " + "ResponsibleUser:" + comboBox1.SelectedItem.ToString() + " " + "Creator:" + textBox4.Text + " " + "DateCreation:" + textBox5.Text + " " + "DateChange:" + textBox6.Text + " " + "Status:" + comboBox2.SelectedItem.ToString();
                    }
                }
                d.Close();
                System.GC.Collect();
                System.GC.WaitForPendingFinalizers();
                File.Delete("Tasks/Zadachi.txt");
                File.Create("Tasks/Zadachi.txt").Close();
                StreamWriter write = new StreamWriter("Tasks/Zadachi.txt", true);
                for (int i = 0; i < hue.Length; i++)
                {
                    if (hue[i] != "")
                    {
                        write.WriteLine(hue[i]);
                    }
                }
                write.Close();
                string[] masiv = new string[listBox1.Items.Count];
                StreamReader chetene = new StreamReader("Tasks/" + Login.username + ".txt");
                for (int i = 0; i < masiv.Length; i++)
                {
                    masiv[i] = chetene.ReadLine().ToString();
                    if (masiv[i] == listBox1.SelectedItem.ToString())
                    {
                        masiv[i] = "Name:" + textBox1.Text + " " + "Description:" + textBox2.Text + " " + "Grade:" + textBox3.Text + " " + "ResponsibleUser:" + comboBox1.SelectedItem.ToString() + " " + "Creator:" + textBox4.Text + " " + "DateCreation:" + textBox5.Text + " " + "DateChange:" + textBox6.Text + " " + "Status:" + comboBox2.SelectedItem.ToString();
                    }
                }
                chetene.Close();
                File.Delete("Tasks/" + Login.username + ".txt");
                File.Create("Tasks/" + Login.username + ".txt").Close();
                StreamWriter pisane = new StreamWriter("Tasks/" + Login.username + ".txt", true);
                for (int i = 0; i < masiv.Length; i++)
                {
                    if (masiv[i] != "")
                    {
                        pisane.WriteLine(masiv[i]);
                    }
                }
                pisane.Close();
                string oldname = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[1].ToString();
                string newname = textBox1.Text;
                if(newname.ToLower()!=oldname.ToLower())
                {
                    File.Copy("Comments/" + oldname + ".txt", "Comments/" + newname + ".txt");
                    File.Delete("Comments/" + oldname + ".txt");
                }
                if (comboBox2.SelectedItem.ToString() != proverka && richTextBox1.Text != "")
                {
                    StreamWriter comment = new StreamWriter("Comments/" + newname + ".txt",true);
                    comment.WriteLine(richTextBox1.Text);
                    comment.Close();
                }
                MessageBox.Show("Редакцията е успешна!");
                this.Close();
            }
        }

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = !(char.IsLetter(e.KeyChar) || e.KeyChar == (char)Keys.Back || char.IsControl(e.KeyChar));
        }

        private void textBox2_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = !(char.IsLetter(e.KeyChar) || e.KeyChar == (char)Keys.Back || char.IsWhiteSpace(e.KeyChar) || e.KeyChar == '.' || e.KeyChar == ',' || char.IsControl(e.KeyChar));
        }

        private void textBox3_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = !(char.IsDigit(e.KeyChar) || e.KeyChar == (char)Keys.Back || char.IsControl(e.KeyChar));
        }

        private void richTextBox1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
                e.SuppressKeyPress = true;
        }
    }
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Text.RegularExpressions;

namespace Task_Manager
{
    public partial class Tasks_Create : Form
    {
        public static string task_regex = @"Name:([a-zA-Z]+)\sDescription:(.+)(?=Grade:)Grade:([0-9]+)\sResponsibleUser:([a-zA-Z0-9]+)\sCreator:([a-zA-Z0-9]+)\sDateCreation:([\d.]+)\sDateChange:([\d.]+)\sStatus:([\w]+)";
        public Tasks_Create()
        {
            InitializeComponent();
        }

        private void Task_Create_Load(object sender, EventArgs e)
        {
            if(!File.Exists("Tasks/Zadachi.txt"))
            {
                File.Create("Tasks/Zadachi.txt").Close();
            }
            comboBox2.Items.Add("Waiting");
            comboBox2.Items.Add("Finished");
            StreamReader b = new StreamReader("Accounts.txt");
            string da = b.ReadLine();
            while (da != null)
            {
                comboBox1.Items.Add(Regex.Match(da, Login.regex).Groups[1].ToString());
                da = b.ReadLine();
            }
            b.Close();
            textBox4.Text = Login.username;
            DateTime date = DateTime.Now;
            string format="dd.MM.yyyy";
            textBox5.Text = date.ToString(format);
            textBox6.Text = date.ToString(format);
            textBox1.MaxLength = 15;
            textBox2.MaxLength = 100;
            textBox3.MaxLength = 4;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            StreamReader d = new StreamReader("Tasks/Zadachi.txt");
            if(textBox1.Text==null || textBox2.Text==null || textBox3.Text==null || comboBox1.SelectedItem==null || comboBox2.SelectedItem==null)
            {
                MessageBox.Show("Трябва да попълните всички полета!","Грешка!",MessageBoxButtons.OK,MessageBoxIcon.Error);
            }
            else if (textBox1.Text == Regex.Match(d.ReadToEnd(), task_regex).Groups[1].ToString())
            {
                MessageBox.Show("Вече има задача с такова име!", "Грешка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else
            {
                d.Close();
                StreamWriter a = new StreamWriter("Tasks/"+comboBox1.SelectedItem + ".txt", true);
                a.WriteLine("Name:" + textBox1.Text + " " + "Description:" + textBox2.Text + " " + "Grade:" + textBox3.Text + " " + "ResponsibleUser:" + comboBox1.SelectedItem.ToString() + " " + "Creator:" + textBox4.Text + " " + "DateCreation:" + textBox5.Text + " " + "DateChange:" + textBox6.Text + " " + "Status:" + comboBox2.SelectedItem.ToString());
                a.Close();
                if (comboBox1.SelectedItem.ToString() != Login.username)
                {
                    StreamWriter b = new StreamWriter("Tasks/"+Login.username + ".txt", true);
                    b.WriteLine("Name:" + textBox1.Text + " " + "Description:" + textBox2.Text + " " + "Grade:" + textBox3.Text + " " + "ResponsibleUser:" + comboBox1.SelectedItem.ToString() + " " + "Creator:" + textBox4.Text + " " + "DateCreation:" + textBox5.Text + " " + "DateChange:" + textBox6.Text + " " + "Status:" + comboBox2.SelectedItem.ToString());
                    b.Close();
                }
                StreamWriter c = new StreamWriter("Tasks/Zadachi.txt", true);
                c.WriteLine("Name:" + textBox1.Text + " " + "Description:" + textBox2.Text + " " + "Grade:" + textBox3.Text + " " + "ResponsibleUser:" + comboBox1.SelectedItem.ToString() + " " + "Creator:" + textBox4.Text + " " + "DateCreation:" + textBox5.Text + " " + "DateChange:" + textBox6.Text + " " + "Status:" + comboBox2.SelectedItem.ToString());
                c.Close();
                File.Create("Comments/"+textBox1.Text+".txt").Close();
                MessageBox.Show("Задачата е успешно създадена!");
                this.Close();
            }
            d.Close();
        }

        private void textBox3_KeyPress(object sender, KeyPressEventArgs e)
        {
             e.Handled = !(char.IsDigit(e.KeyChar) || e.KeyChar == (char)Keys.Back || char.IsControl(e.KeyChar));
        }

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = !(char.IsLetter(e.KeyChar) || e.KeyChar == (char)Keys.Back || char.IsControl(e.KeyChar));
        }

        private void textBox2_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = !(char.IsLetter(e.KeyChar) || e.KeyChar == (char)Keys.Back || char.IsWhiteSpace(e.KeyChar) || e.KeyChar == '.' || e.KeyChar == ',' || char.IsControl(e.KeyChar));
        }
    }
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Text.RegularExpressions;

namespace Task_Manager
{
    public partial class Tasks_Delete : Form
    {
        public Tasks_Delete()
        {
            InitializeComponent();
        }

        private void Tasks_Delete_Load(object sender, EventArgs e)
        {
            listBox1.Items.AddRange(File.ReadAllLines("Tasks/" + Login.username + ".txt"));
        }

        private void button1_Click(object sender, EventArgs e)
        {
            int counter = 0;
            string respuser = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[4].ToString();
            string filename = Regex.Match(listBox1.SelectedItem.ToString(), Tasks_Create.task_regex).Groups[1].ToString();
            File.Delete("Comments/"+filename+".txt");
            StreamReader b = new StreamReader("Tasks/" + respuser + ".txt");
            while(b.ReadLine()!=null)
            {
                counter++;
            }
            b.Close();
            string[] temp=new string [counter];
            StreamReader da = new StreamReader("Tasks/" + respuser + ".txt");
            for (int i = 0; i < temp.Length;i++)
            {
                temp[i] = da.ReadLine().ToString();
                if(temp[i]==listBox1.SelectedItem.ToString())
                {
                    temp[i] = null;
                }
            }
            da.Close();
            File.Delete("Tasks/" + respuser + ".txt");
            File.Create("Tasks/" + respuser + ".txt").Close();
            StreamWriter c = new StreamWriter("Tasks/" + respuser + ".txt", true);
            for (int i = 0; i < temp.Length;i++)
            {
                if(temp[i]!=null)
                {
                    c.WriteLine(temp[i]);
                }
            }
            c.Close();
            int br = 0;
            StreamReader ne = new StreamReader("Tasks/Zadachi.txt");
            while(ne.ReadLine()!=null)
            {
                br++;
            }
            ne.Close();
            string[] hue = new string[br];
            StreamReader d = new StreamReader("Tasks/Zadachi.txt");
            for (int i = 0; i < hue.Length; i++)
            {
                hue[i] = d.ReadLine().ToString();
                if(hue[i]==listBox1.SelectedItem.ToString())
                {
                    hue[i] = null;
                }
            }
            d.Close();
            File.Delete("Tasks/Zadachi.txt");
            File.Create("Tasks/Zadachi.txt").Close();
            StreamWriter write = new StreamWriter("Tasks/Zadachi.txt",true);
            for (int i = 0; i < hue.Length;i++ )
            {
                if(hue[i]!=null)
                {
                    write.WriteLine(hue[i]);
                }
            }
            write.Close();
            listBox1.Items.Remove(listBox1.SelectedItem);
            File.Delete("Tasks/" + Login.username + ".txt");
            File.Create("Tasks/" + Login.username + ".txt").Close();
            StreamWriter a = new StreamWriter("Tasks/" + Login.username + ".txt", true);
            foreach (var item in listBox1.Items)
            {
                a.WriteLine(item.ToString());
            }
            a.Close();
            MessageBox.Show("Изтриването е успешно!");
            this.Close();
        }
    }
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;

namespace Task_Manager
{
    public partial class Tasks_Look : Form
    {
        public Tasks_Look()
        {
            InitializeComponent();
        }

        private void Tasks_Look_Load(object sender, EventArgs e)
        {
            listBox1.Items.AddRange(File.ReadAllLines("Tasks/" + Login.username + ".txt"));
        }
    }
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Text.RegularExpressions;

namespace Task_Manager
{
    public partial class Users_Add : Form
    {
        public Users_Add()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            StreamReader b = new StreamReader("Accounts.txt");
            if(textBox1.TextLength<3 || textBox1.TextLength>12)
            {
                MessageBox.Show("Името трябва да е между 3 и 12 символа!","Грешка!",MessageBoxButtons.OK,MessageBoxIcon.Error);
            }
            else if(textBox2.TextLength<3 || textBox2.TextLength>12)
            {
                MessageBox.Show("Паролата трябва да е между 3 и 12 символа!", "Грешка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else if (textBox1.Text == Regex.Match(b.ReadToEnd(), Login.regex).Groups[1].ToString())
            {
                MessageBox.Show("Вече съществува такова име!", "Грешка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else
            {
                b.Close();
                System.GC.Collect();
                System.GC.WaitForPendingFinalizers();
                StreamWriter a = new StreamWriter("Accounts.txt", true);
                if (checkBox1.Checked)
                {
                    a.WriteLine("Username:" + textBox1.Text + " " + "Password:" + textBox2.Text + " " + "true");
                }
                else
                {
                    a.WriteLine("Username:" + textBox1.Text + " " + "Password:" + textBox2.Text + " " + "false");
                }
                a.Close();
                File.Create("Tasks/" + textBox1.Text + ".txt").Close();
                MessageBox.Show("Успешно добавен потребител!");
                this.Close();
            }
            b.Close();
        }

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = !(char.IsLetterOrDigit(e.KeyChar) || e.KeyChar == (char)Keys.Back);
        }

        private void textBox2_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = !(char.IsLetterOrDigit(e.KeyChar) || e.KeyChar == (char)Keys.Back);
        }
    }
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Text.RegularExpressions;

namespace Task_Manager
{
    public partial class Users_Change : Form
    {
        public Users_Change()
        {
            InitializeComponent();
        }

        private void Users_Change_Load(object sender, EventArgs e)
        {
            listBox1.Items.AddRange(File.ReadAllLines("Accounts.txt"));
            listBox1.SelectedIndex = 0;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            StreamReader b = new StreamReader("Accounts.txt");
            if (textBox1.TextLength < 3 || textBox1.TextLength > 12)
            {
                MessageBox.Show("Името трябва да е между 3 и 12 символа!", "Грешка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else if (textBox2.TextLength < 3 || textBox2.TextLength > 12)
            {
                MessageBox.Show("Паролата трябва да е между 3 и 12 символа!", "Грешка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else if (textBox1.Text == Regex.Match(b.ReadToEnd().ToString(), Login.regex).Groups[1].ToString())
            {
                MessageBox.Show("Вече съществува такова име!", "Грешка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else
            {
                b.Close();
                StreamReader mhm = new StreamReader("Accounts.txt");
                string[] file = new string[listBox1.Items.Count];
                for (int i = 0; i < file.Length; i++)
                {
                    file[i] = mhm.ReadLine().ToString();
                    if (file[i] == listBox1.SelectedItem.ToString())
                    {
                        if (checkBox1.Checked)
                        {
                            file[i] = "Username:" + textBox1.Text + " " + "Password:" + textBox2.Text + " " + "true";
                        }
                        else
                        {
                            file[i] = "Username:" + textBox1.Text + " " + "Password:" + textBox2.Text + " " + "false";
                        }
                    }
                }
                mhm.Close();
                b.Close();
                System.GC.Collect();
                System.GC.WaitForPendingFinalizers();
                File.Delete("Accounts.txt");
                File.Create("Accounts.txt").Close();
                StreamWriter c = new StreamWriter("Accounts.txt", true);
                for (int i = 0; i < file.Length; i++)
                {
                    c.WriteLine(file[i]);
                }
                c.Close();
                string oldname = Regex.Match(listBox1.SelectedItem.ToString(), Login.regex).Groups[1].ToString();
                string newname = textBox1.Text;
                if(newname.ToLower()!=oldname.ToLower())
                {
                    File.Copy("Tasks/" + oldname + ".txt", "Tasks/" + newname + ".txt");
                    File.Delete("Tasks/" + oldname + ".txt");
                }
                MessageBox.Show("Редакцията е успешна!");
                this.Close();

            }
        }

        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if(listBox1.SelectedIndex>=0 && listBox1.SelectedItem!=null)
            {
                string line = listBox1.SelectedItem.ToString();
                textBox1.Text = Regex.Match(line, Login.regex).Groups[1].ToString();
                textBox2.Text = Regex.Match(line, Login.regex).Groups[2].ToString();
            }
        }

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = !(char.IsLetterOrDigit(e.KeyChar) || e.KeyChar == (char)Keys.Back);
        }

        private void textBox2_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = !(char.IsLetterOrDigit(e.KeyChar) || e.KeyChar == (char)Keys.Back);
        }
    }
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Text.RegularExpressions;

namespace Task_Manager
{
    public partial class Users_Delete : Form
    {
        public Users_Delete()
        {
            InitializeComponent();
        }

        private void Users_Delete_Load(object sender, EventArgs e)
        {
            listBox1.Items.AddRange(File.ReadAllLines("Accounts.txt"));
        }

        private void button1_Click(object sender, EventArgs e)
        {
            listBox1.Items.Remove(listBox1.SelectedItem);
            File.Delete("Accounts.txt");
            File.Create("Accounts.txt").Close();
            StreamWriter a = new StreamWriter("Accounts.txt",true);
            foreach(var item in listBox1.Items)
            {
                a.WriteLine(item.ToString());
            }
            a.Close();
            MessageBox.Show("Изтриването е успешно!");
            this.Close();
        }
    }
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;

namespace Task_Manager
{
    public partial class Users_Look : Form
    {
        public Users_Look()
        {
            InitializeComponent();
        }

        private void Users_Look_Load(object sender, EventArgs e)
        {
            listBox1.Items.AddRange(File.ReadAllLines("Accounts.txt"));
        }
    }
}