How to Run the dynamic code in TextBox ?

Like this ?


        private void textBox1_TextChanged(object sender, EventArgs e)
        {
            if (textBox2.Text != string.Empty)
            {
                double d = Convert.ToDouble(textBox1.Text) + Convert.ToDouble(textBox2.Text);
                label1.Text = d.ToString();
            }
        }

        private void textBox2_TextChanged(object sender, EventArgs e)
        {
            if (textBox1.Text != string.Empty)
            {
                double d = Convert.ToDouble(textBox1.Text) + Convert.ToDouble(textBox2.Text);
                label1.Text = d.ToString();
            }
        }

I do not have a problem with pressing chars or numbers. I have a problem to run the code in textBox. I dont wanna write the code under button_Click, i wanna do it in the textbox, so my code is gonna be dynamic. but still thanks for your interest :-)

Try this
   private void button1_Click(object sender, EventArgs e)
        {
            double d = Convert.ToDouble(textBox1.Text) + Convert.ToDouble(textBox2.Text);
            label1.Text = d.ToString();
        }

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (!Char.IsDigit(e.KeyChar) && e.KeyChar != 8)
            {
                e.Handled = true;
            }
          //allows only numbers and backspace
        }

        private void textBox2_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (!Char.IsDigit(e.KeyChar) && e.KeyChar != 8)
            {
                e.Handled = true;
            }
            //allows only numbers and backspace
        }