//Calculate button event
private void CalculateButton_Click(object sender, EventArgs e)
{
try
{
// Weight in kg
double weight = GetWeight();
// Height in cm
double height = GetHeight();
double bmi = BMIUtility.calculateBmi(weight, height);
bmiTextBox.Text = Convert.ToString(Math.Round(bmi, 2));
Gender gender = GetGender();
double idealWeight = BMIUtility.calculateIdealBodyWeight(gender, height);
recommendationTextBox.Text = $"Your ideal weight is {idealWeight}";
List <BMIData> bmiDataList = BMIData.getBMIDataList();
BMIData resultBmiData = GetBmiData(bmi, bmiDataList);
resultsTextBox.Text = resultBmiData.Category;
unfocusResultInDataGrid();
focusResultInDataGrid(bmiDataList, resultBmiData);
} catch (Exception ex)
{
MessageBox.Show("Exception occurred: " + ex.Message);
}
}
//this method would fetch and validate the height value entered in form
private double GetHeight()
{
double height;
try
{
height = Convert.ToDouble(heightTextBox.Text);
}
catch (Exception ex)
{
throw new Exception("Invalid value for height");
}
if (height <= 0)
{
throw new Exception("Height cannot be zero or less than zero");
}
if (heightComboBox.Text.Equals("inch"))
{
height = BMIUtility.convertInchToCentimeter(height);
}
return(height);
}
//this method would fetch and validate the weight value entered in form
private double GetWeight()
{
double weight;
try
{
weight = Convert.ToDouble(weightTextBox.Text);
}
catch (Exception)
{
throw new Exception("Invalid value for weight");
}
if (weight <= 0)
{
throw new Exception("Weight cannot be zero or less than zero");
}
if (weightComboBox.Text.Equals("lb"))
{
weight = BMIUtility.convertPoundToKilogram(weight);
}
return(weight);
}