Fahrenheit To Celsius in C#

In this article that I  written I wrote a simple program using C# that will ask the user to give temperature in Fahrenheit and then our program will convert it in Celsius temperature equivalent. I also included error trapping procedure to check if the the given value is a number or not. Feel free to use my code in your project in C#. In this sample program I am using Visual Studio 2010 as programming tool.

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Sample Program Output

Program Listing

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 temperature

{

      

    public partial class Form1 : Form

    {

           

        public static double Fahrenheit_Celsius(double f)

  {

   return (5.0 / 9.0) * (f - 32);

  }

        public Form1()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            double temp = 0.00;

            char degree = (char)176;

          if (!double.TryParse(textBox1.Text, out temp))

            {

                MessageBox.Show("I need just a number in the textbox.");

                textBox1.Text = "";

                textBox3.Text = "";

                textBox1.Focus();

            }

          

            double solve = Fahrenheit_Celsius(temp);

            

            textBox3.Text = solve.ToString("00.00") + degree + "C";

            textBox3.Enabled = false;

        }          

                     

        private void button2_Click(object sender, EventArgs e)

        {

            textBox1.Text = "";

            textBox3.Text = "";

            textBox1.Focus();

        }

       

    }

}