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 DataGridview_4_Subject_Fail_Pass
{
    public partial class Form1 : Form
    {
        int r; // Row index variable

        public Form1()
        {
            InitializeComponent();
            r = 0; // Initialize row index
        }

        private void button1_Click(object sender, EventArgs e)
        {  
            // Adding a new row to DataGridView
            dataGridView1.Rows.Add();

            // Assign values from TextBoxes to DataGridView cells
            dataGridView1[0, r].Value = textBox1.Text;
            dataGridView1[1, r].Value = textBox2.Text;
            dataGridView1[2, r].Value = textBox3.Text;
            dataGridView1[3, r].Value = textBox4.Text;

            // Calculate Total Marks
            int totalMarks = Convert.ToInt16(textBox1.Text) +
                 Convert.ToInt16(textBox2.Text) +
                 Convert.ToInt16(textBox3.Text) +
                 Convert.ToInt16(textBox4.Text);

            dataGridView1[4, r].Value = totalMarks.ToString();


            // Calculate Average
            dataGridView1[5, r].Value = (Convert.ToInt16(dataGridView1[4, r].Value) / 4).ToString();
            
            // Check Pass or Fail
            if (Convert.ToInt16(dataGridView1[5, r].Value) > 35)
            {
                dataGridView1[6, r].Value = "Pass";
            }
            else
            {
                dataGridView1[6, r].Value = "Fail";
            }

            r++; // Move to next row
        }
    }
}