CSharpTutorial| How to Calculate Sum, Max, Min, and Average from Dynamically Created TextBoxes 🔥

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 WindowsFormsApp20
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private int newtextBox = 1;
        private List<TextBox> txtbox = new List<TextBox>();
        public TextBox AddNewTextBox()
        {
            TextBox ntextBox = new TextBox();
            Controls.Add(ntextBox);
            txtbox.Add(ntextBox);
            ntextBox.Top = newtextBox * 27;
            ntextBox.Left = 100;
            ntextBox.ForeColor = Color.DarkBlue;
            ntextBox.BackColor = Color.AliceBlue;
            ntextBox.Font = new Font("Arial", 14, FontStyle.Bold);
            ntextBox.TextAlign = HorizontalAlignment.Center;
            newtextBox++;
            return ntextBox;
        }
        private void button1_Click(object sender, EventArgs e)
        {
            AddNewTextBox();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            label1.Text = txtbox
                .Select(t => decimal.TryParse(t.Text, out decimal value) ? value : 0)
                .Sum()
                .ToString("0.00");
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (txtbox.Count == 0) return;
            label1.Text = txtbox
                .Select(t => decimal.TryParse(t.Text, out decimal value) ? value : 0)
                .Max()
                .ToString("0.00");
        }

        private void button4_Click(object sender, EventArgs e)
        {
            if (txtbox.Count == 0) return;
            label1.Text = txtbox
                .Select(t => decimal.TryParse(t.Text, out decimal value) ? value : 0)
                .Min()
                .ToString("0.00");
        }

        private void button5_Click(object sender, EventArgs e)
        {
            if (txtbox.Count == 0) return;
            label1.Text = txtbox
                .Select(t => decimal.TryParse(t.Text, out decimal value) ? value : 0)
                .Average()
                .ToString("0.00");
        }

        private void button6_Click(object sender, EventArgs e)
        {
            foreach(TextBox tb in txtbox)
            {
                tb.Text = String.Empty;
            }
            label1.Text = "";
        }

        private void button7_Click(object sender, EventArgs e)
        {
            foreach (TextBox tb in txtbox)
            {
                Controls.Remove(tb);
                tb.Dispose();
            }
            txtbox.Clear();
            newtextBox = 1;
            label1.Text = "";
        }
    } 

}