Write a Windows form application C that can 1 Read a numberD

Write a Windows form application, C# that can
1. Read a number/Date and Time from a text box
2. Write to a rich text box and add names to a list box (select name , display to rich text )
3.Set up a countdown timer (by 1 second)
4. Button to clear rich text box

Please and thank you

Solution

using System;
using System.Drawing;
using System.Windows.Forms;

namespace formApplication
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form_Load(object sender, EventArgs e)
        {
            textBox1.Width = 250;
            textBox1.Height = 50;
            textBox1.Multiline = true;
            textBox1.BackColor = Color.Blue;
            textBox1.ForeColor = Color.White;
            textBox1.BorderStyle = BorderStyle.Fixed3D;
          
           richTextBox1.Font = new Font(\"Consolas\", 18f, FontStyle.Bold);
           richTextBox1.BackColor = Color.AliceBlue;
           string[] words =
           {
               \"Dot\",
               \"Net\",
               \"Perls\",
               \"is\",
               \"a\",
               \"nice\",
               \"website.\"
           };

           for (int i = 0; i < words.Length; i++)
           {
               string word = words[i];
               {
                   listBox1.Items.Add(word);
               }
           }
           listBox1.SelectionMode = SelectionMode.MultiSimple;
        }
      
       private void timer_Tick(object sender, EventArgs e)
       {
           if (timeLeft > 0)
           {
               // display time left
               timeLeft = timeLeft - 1;
               timeLabel.Text = timeLeft + \" seconds\";
           }
           else
           {
               // if timer completed
               timer1.Stop();
               timeLabel.Text = \"Time up!\";
               startButton.Enabled = true;
           }
       }

        private void button_Click(object sender, EventArgs e)
        {
            string var;
            var = textBox1.Text;
            MessageBox.Show(var);
        }
    }
}

Write a Windows form application, C# that can 1. Read a number/Date and Time from a text box 2. Write to a rich text box and add names to a list box (select nam
Write a Windows form application, C# that can 1. Read a number/Date and Time from a text box 2. Write to a rich text box and add names to a list box (select nam

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