private void Enter_Click(object sender, EventArgs e)
{
label6.ResetText();
NotNumber.Clear();
double Mark1 = Mark(textBox1);
double Mark2 = Mark(textBox2);
double Mark3 = Mark(textBox3);
double Mark4 = Mark(textBox4);
//label6.Text = Mark1.ToString() + Mark2.ToString() + Mark3.ToString() + Mark4.ToString();
if (Mark1 != -1 && Mark2 != -1 && Mark3 != -1 && Mark4 != -1)
{
double MO = (20 * Mark3 + (Mark1 + Mark2) / 2 * 30 + Mark4 * 50) / 100;
label6.Text = MO.ToString();
}
else
{
label6.Text = "Wrong input. Please try again.";
}
}
private double Mark(TextBox textBox)
{
string StringMark = textBox.Text;
//label6.Text += textBox.Text;
double Mark1;
try
{
int mingrade = 0;
int maxgrade = 112;
Mark1 = Convert.ToDouble(StringMark);
if (Mark1 < mingrade)
{
Mark1 = -1;
NotNumber.SetError(textBox, "The value you entered is bellow " + mingrade);
}
if (Mark1 > maxgrade)
{
Mark1 = -1;
NotNumber.SetError(textBox, "The value you entered is over " + maxgrade);
}
return(Mark1);
}
catch (Exception)
{
NotNumber.SetError(textBox, "The value you entered is not an double.");
return(-1);
}
}