Code example 7-1private void btnCalculate_Click(object sende…
Code example 7-1private void btnCalculate_Click(object sender, System.EventArgs e){ decimal weightInPounds = 0m; try { weightInPounds = Convert.ToDecimal(txtPounds.Text); if (weightInPounds > 0) { decimal weightInKilos = weightInPounds / 2.2m; lblKilos.Text = weightInKilos.ToString(“f2”); } else { MessageBox.Show(“Weight must be greater than 0.”, “Entry error”); txtPounds.Focus(); } } catch(FormatException) { MessageBox.Show(“Weight must be numeric.”, “Entry error”); txtPounds.Focus(); }} (Refer to code example 7-1.) If the user clicks the Calculate button without entering data in the text box, what does the code do?