How to Program a Form with a Color transition Effect in Csharp

A program that changes the color of the form using 3 Timer control object.

You only need 1 Label and 3 Timer

After adding the 3 timer, rename it to timer1 – timerR, timer2 – timerG, timer3 – timerB. Set each Interval to 20 and Enabled to True.

Type the code to your code editor

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace ColorTransition

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        int r = 244;

        int g = 65;

        int b = 65;

        private void timerR_Tick(object sender, EventArgs e)

        {

            if (b >= 244)

            {

                r -= 1;

                this.BackColor = Color.FromArgb(r, g, b);

                if (r <= 65)

                {

                    timerR.Stop();

                    timerG.Start();

                }

            }

            if (b <= 65)

            {

                r += 1;

                this.BackColor = Color.FromArgb(r, g, b);

                if (r >= 244)

                {

                    timerR.Stop();

                    timerG.Start();

                }

            }

        }

        private void timerG_Tick(object sender, EventArgs e)

        {

            if (r <= 65)

            {

                g += 1;

                this.BackColor = Color.FromArgb(r, g, b);

                if (g >= 244)

                {

                    timerG.Stop();

                    timerB.Start();

                }

            }

            if (r >= 244)

            {

                g -= 1;

                this.BackColor = Color.FromArgb(r, g, b);

                if (g <= 65)

                {

                    timerG.Stop();

                    timerB.Start();

                }

            }

        }

        private void timerB_Tick(object sender, EventArgs e)

        {

            if (g <= 65)

            {

                b += 1;

                this.BackColor = Color.FromArgb(r, g, b);

                if (b >= 244)

                {

                    timerB.Stop();

                    timerR.Start();

                }

            }

            if (g >= 244)

            {

                b -= 1;

                this.BackColor = Color.FromArgb(r, g, b);

                if (b <=64)

                {

                    timerB.Stop();

                    timerR.Start();

                }

            }

        }

    }

}

The output will change the form’s color.