private void WeightTextBox_Click(object sender, EventArgs e)
{
WeightTextBox.SelectAll();
}
/**
* <summary>
* This eventhandler calculate the BMI and display on the textboxes
* </summary>
*
* @method CalculateButton_Click
* @param {object} sender
* @param {EventArgs} e
*/
private void CalculateButton_Click(object sender, EventArgs e)
{
// local variables
double height = 0, weight = 0, BMI;
try {
height = Convert.ToDouble(HeightTextBox.Text);
weight = Convert.ToDouble(WeightTextBox.Text);
}
catch (FormatException)
{
MessageBox.Show("Fill out the forms");
}
if (HeightTextBox.Text == "" || WeightTextBox.Text == "")
{
HeightTextBox.Focus();
HeightTextBox.SelectAll();
WeightTextBox.Focus();
WeightTextBox.SelectAll();
}
else if (height < 0 || weight < 0)
{
MessageBox.Show("Please provide positive values");
}
else if (height > 0 && weight > 0)
{
// in case the input is in imperial
if (ImperialButton.Checked == true)
{
// calculate BMI in imperial
BMI = (weight * 703) / (height * height);
// condition to set progress bar value
if (((BMI / 30) * 100) > 100)
{
BMIProgressBar.Value = 100;
}
else
{
BMIProgressBar.Value = ((int)((BMI / 30) * 100));
}
BMIResultBox.Text = string.Format("{0:f1}", BMI);
BMIResultBox.BackColor = Color.LightSalmon;
BMIScaleBox.BackColor = Color.LightSalmon;
// determine the BMI
if (BMI < 18.5)
{
this.BMIScaleBox.Text = ("Underweight");
BMIProgressBar.ForeColor = Color.Yellow;
}
else if (BMI >= 18.5 && BMI <= 24.9)
{
this.BMIScaleBox.Text = ("Normal");
BMIProgressBar.ForeColor = Color.Green;
}
else if (BMI >= 25 && BMI <= 29.9)
{
this.BMIScaleBox.Text = ("Overweight");
BMIProgressBar.ForeColor = Color.DarkGreen;
}
else if (BMI >= 30)
{
this.BMIScaleBox.Text = ("Obese");
BMIProgressBar.ForeColor = Color.Red;
}
}
// in case the input is in metric units
else if (MetricUnitsButton.Checked == true)
{
// calculate BMI in metric units
BMI = weight / ((height * height) / 10000);
// condition to set progress bar value
if (((BMI / 30) * 100) > 100)
{
BMIProgressBar.Value = 100;
}
else
{
BMIProgressBar.Value = ((int)((BMI / 30) * 100));
}
BMIResultBox.Text = string.Format("{0:f1}", BMI);
BMIResultBox.BackColor = Color.LightSalmon;
BMIScaleBox.BackColor = Color.LightSalmon;
BMIProgressBar.Maximum = 100;
// determine the BMI
if (BMI < 18.5)
{
this.BMIScaleBox.Text = ("Underweight");
BMIProgressBar.ForeColor = Color.Yellow;
}
else if (BMI >= 18.5 && BMI <= 24.9)
{
this.BMIScaleBox.Text = ("Normal");
BMIProgressBar.ForeColor = Color.Green;
}
else if (BMI >= 25 && BMI <= 29.9)
{
this.BMIScaleBox.Text = ("Overweight");
BMIProgressBar.ForeColor = Color.DarkGreen;
}
else if (BMI >= 30)
{
this.BMIScaleBox.Text = ("Obese");
BMIProgressBar.ForeColor = Color.Red;
}
}
}
}