CPE263 Week 2

Week 2

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Project 1

The MessageBox.Show method in C# is used to display a message box to the user.

Key Points:

• Basic Usage: MessageBox.Show(“Message”) displays a message with an OK button.
• Title: You can add a title using an additional parameter, like MessageBox.Show(“Message”, “Title”).
• Buttons: You can specify buttons (e.g., YesNo, OKCancel) using MessageBoxButtons, and capture the result to handle different actions based on user input.

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 week_2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            MessageBox.Show("ทดสอบ MessBox", "ทดสอบ MessBox"
                , MessageBoxButtons.RetryCancel, MessageBoxIcon.Information);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            MessageBox.Show("ทดสอบ MessBox", "ทดสอบ MessBox"
                , MessageBoxButtons.AbortRetryIgnore
                , MessageBoxIcon.Stop
                , MessageBoxDefaultButton.Button3);
        }

        int count = 0;

        private void button3_Click(object sender, EventArgs e)
        {
            int data = 0;
            count++;
            data++;
            MessageBox.Show("Global, Count = " + count
                +"\nLocal, Count = " + data);
        }

        int count2 = 0;

        private void button4_Click(object sender, EventArgs e)
        {
            count2++;
            if (count2 == 1)
            {
                button4.BackColor = Color.Red;
            }else if (count2 == 2)
            {
                button4.BackColor = Color.Green;
            }else if (count2 == 3)
            {
                button4.BackColor = Color.Blue;
                count2 = 0;
            }
        }
    }
}

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Project 2

Triangle area

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 Triangle area
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void label3_Click(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            double Base, High, ans;
            Base = Convert.ToDouble(txtBase.Text);
            High = Convert.ToDouble(txtHigh.Text);
            ans = Base * High / 2;
            lblAns.Text = ans.ToString();
        }
    }
}

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Project 3

Trapezoid area

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 Trapezoid area
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnRun_Click(object sender, EventArgs e)
        {
            double Side1, Side2, High, ans;
            High = Convert.ToDouble(txtHigh.Text);
            Side1 = Convert.ToDouble(txtSide1.Text);
            Side2 = Convert.ToDouble(txtSide2.Text);
            ans = (Side1 + Side2) * High / 2;
            lblAns.Text = ans.ToString();
        }
    }
}