Question

I am new in creating applications using Visual Studio 2010. I am creating an application where it calculates the difference of a two values. I have two textboxes where the user will input 2 numbers. What I want is that it will calculate the difference of two values then display the difference in another textbox. Is this even possible? If yes, how can I do this? Please help.

Answer 1

First get two values from their textboxes and convert them into numbers.

int val1 = Int32.Parse(TextBox1.Text);
int val2 = Int32.Parse(TextBox2.Text);

Calculate the result

int result = val1 - val2;

Store it in the 3rd textbox.

TextBox3.Text = result.ToString();

You should use Exceptions to catch situation when someone has entered an incorrect value in one of the textboxes.