This is a simple C# program code to find area of a rectangle, circle and triangle with user interface and example.
Manually we can find the area of a rectangle by using equation:
Area = Breadth * Length.
Also we can find the area of a circle by using equation:
Area = 3.14 * (radius)2
Also we can find the area of a triangle by using equation:
a = length of first side
b = length of second side
c = length of third side
s = (a + b+ c)/2
Area = sqrt(s*(s-a)*(s-b)*(s-c))
-where sqrt stands for square root
User interface with example:
Here ‘Find Area’ is the ‘button_1’. There are three tabs: One is for ‘Rectangle’, another one is for ‘Triangle’ and last is for ‘Circle’.
Code Behind interface:
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 area
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
if (tabControl1.SelectedTab == tabPage1)
{
double breadth = Convert.ToDouble(textBox1.Text);
double lenght = Convert.ToDouble(textBox2.Text);
label5.Text = (breadth * lenght).ToString();
}
if (tabControl1.SelectedTab == tabPage2)
{
double a = Convert.ToDouble(textBox4.Text);
double b = Convert.ToDouble(textBox5.Text);
double c = Convert.ToDouble(textBox6.Text);
double s = (a + b + c) / 2;
double Area = Math.Sqrt(s * (s - a) * (s - b) * (s - c));
label5.Text = (Area).ToString();
}
if (tabControl1.SelectedTab == tabPage3)
{
double radius = Convert.ToDouble(textBox3.Text);
label5.Text = (3.14 * radius).ToString();
}
}
}
}
Mroe C# programs are here
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