protected void StringCalculationButton_Click(object sender, EventArgs e)
 {
     TextBox11Result.Text = Ex2HCalculations.StringCalc01(TextBox11.Text);
     TextBox12Result.Text = Ex2HCalculations.StringCalc02(TextBox12.Text);
     TextBox13Result.Text = Ex2HCalculations.StringCalc03(TextBox13.Text);
     TextBox14Result.Text = Ex2HCalculations.StringCalc04(TextBox14.Text);
     TextBox15Result.Text = Ex2HCalculations.StringCalc05(TextBox15.Text);
     TextBox16Result.Text = Ex2HCalculations.StringCalc06(TextBox16.Text);
     TextBox17Result.Text = Ex2HCalculations.StringCalc07(TextBox17.Text);
     TextBox18Result.Text = Ex2HCalculations.StringCalc08(TextBox18.Text);
     TextBox19Result.Text = Ex2HCalculations.StringCalc09(TextBox19.Text);
     Label20Result.Text   = Ex2HCalculations.StringCalc10(TextBox17.Text, TextBox18.Text, TextBox19.Text);
 }
 protected void DateCalculationsButton_Click(object sender, EventArgs e)
 {
     TextBox1AResult.Text = DateTime.Now.ToShortDateString();
     TextBox1BResult.Text = DateTime.Now.ToShortTimeString();
     TextBox2AResult.Text = DateTime.Today.ToShortDateString();
     TextBox2BResult.Text = DateTime.Today.ToShortTimeString();
     TextBox3aResult.Text = DateTime.Today.Year.ToString();
     TextBox3BResult.Text = DateTime.Today.Month.ToString();
     TextBox3CResult.Text = DateTime.Today.Day.ToString();
     TextBox4Result.Text  = DateTime.Today.AddDays(90).ToShortDateString();
     TextBox5Result.Text  = DateTime.Today.AddMonths(3).ToShortDateString();
     TextBox6Result.Text  = Ex2HCalculations.DateCalc06(TextBox6a.Text, TextBox6b.Text, TextBox6c.Text);
     TextBox7Result.Text  = Ex2HCalculations.DateCalc07(TextBox7.Text);
     TextBox8Result.Text  = Ex2HCalculations.DateCalc08(TextBox8.Text);
     TextBox9Result.Text  = Ex2HCalculations.DateCalc09(TextBox9a.Text, TextBox9b.Text);
     TextBox10Result.Text = Ex2HCalculations.DateCalc10(TextBox10a.Text, TextBox10b.Text);
 }