Public class MyDerivedClass : MyBaseClass
{
public override int Calculate()
{
return numberOne * numberTwo;
}
I call the method in button command:
private void button1_Click(object sender, EventArgs e)
        {
MyDerivedClass mdc = new MyDerivedClass();

mdc.SumAll();
Question: I have two text boxes on form and one button.
I want to input numbers in textboxes and click button to displaytotal in a messagebox.
I have tried:
myDerivedClass mdc = new myDerivedClass();
int total = mdc.calculate();
total=(int.Parse(textBox1.Text)) + (int.Parse(textBox2.Text));
MessageBox.Show(total.ToString());