Programiranje 13.09.2013

  private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                double a = Convert.ToDouble(textBox1.Text);
                double b = Convert.ToDouble(textBox2.Text);
                double c = a + b;
                textBox3.Text = Convert.ToString(c);
            }
            catch
            {
                MessageBox.Show("Neispravni podatak");
            }
        }

MessageBox sa zarezom

  private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                double a = Convert.ToDouble(textBox1.Text);
                double b = Convert.ToDouble(textBox2.Text);
                double c = a + b;
                textBox3.Text = Convert.ToString(c);
            }
            catch
            {
                MessageBox.Show("Neispravni podatak, probaj ponovo");
            }
        }