ice 2 prog

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;

namespace TaskManagementApp
{
    public partial class MainForm : Form
    {
        // Create a list to store tasks
        private List<Task> tasks = new List<Task>();

        public MainForm()
        {
            InitializeComponent();
            InitializeDataGridView();
        }

        private void InitializeDataGridView()
        {
            // Set up DataGridView columns
            dataGridView.Columns.Add("TaskTitle", "Task Title");
            dataGridView.Columns.Add("DueDate", "Due Date");
            dataGridView.Columns.Add("Status", "Status");
            dataGridView.Columns["DueDate"].DefaultCellStyle.Format = "yyyy-MM-dd";

            // Set DataGridView data source to the tasks list
            dataGridView.DataSource = tasks;

            // Hide unnecessary columns (TaskId)
            dataGridView.Columns["TaskId"].Visible = false;

            // Enable DataGridView selection
            dataGridView.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
        }

        // Define a Task class to represent tasks
        private class Task
        {
            public int TaskId { get; set; }
            public string TaskTitle { get; set; }
            public DateTime DueDate { get; set; }
            public bool Status { get; set; } // True for completed, false for pending
        }

        // Additional methods
        private void FilterTasksByStatus(bool completed)
        {
            var filteredTasks = tasks.Where(t => t.Status == completed).ToList();
            dataGridView.DataSource = filteredTasks;
        }

        private void SortTasksByDueDate()
        {
            tasks = tasks.OrderBy(t => t.DueDate).ToList();
            dataGridView.DataSource = tasks;
        }

        private void AddTask(string title, DateTime dueDate, bool status)
        {
            var task = new Task
            {
                TaskId = tasks.Count + 1,
                TaskTitle = title,
                DueDate = dueDate,
                Status = status
            };
            tasks.Add(task);
            dataGridView.DataSource = tasks;
        }

        private void FilterTasksByKeyword(string keyword)
        {
            var filteredTasks = tasks.Where(t => t.TaskTitle.Contains(keyword)).ToList();
            dataGridView.DataSource = filteredTasks;
        }

        private void FilterTasksByDateRange(DateTime startDate, DateTime endDate)
        {
            var filteredTasks = tasks.Where(t => t.DueDate >= startDate && t.DueDate <= endDate).ToList();
            dataGridView.DataSource = filteredTasks;
        }

        private void DisplayTaskCounts()
        {
            int pendingCount = tasks.Count(t => !t.Status);
            int completedCount = tasks.Count(t => t.Status);
            MessageBox.Show($"Pending Tasks: {pendingCount}\nCompleted Tasks: {completedCount}");
        }

        private void GroupTasksByStatus()
        {
            var groupedTasks = tasks.GroupBy(t => t.Status).ToDictionary(g => g.Key, g => g.ToList());
            // Now you can work with the groupedTasks dictionary to display or process the grouped data.
        }

        private void InitializeDataGridView()
        {
            // ... (existing code)

            // Hide all columns initially
            foreach (DataGridViewColumn column in dataGridView.Columns)
            {
                column.Visible = false;
            }

            // Show only TaskTitle and Status columns
            dataGridView.Columns["TaskTitle"].Visible = true;
            dataGridView.Columns["Status"].Visible = true;
        }
    }
}