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.) What type of data validation does this program do?

If the GetMessage() method returns “Greetings from Earth!”,…

If the GetMessage() method returns “Greetings from Earth!”, what message is displayed after these statements are executed?var message = data.GetMessage();if (message is not null && message is string s){    MessageBox.Show(s);}else{    MessageBox.Show(“No message received.”);};