[RESOLVED] [2005] math on multiple textboxes show in another

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Hi Everyone, I will state the obvious first, I am new here, and new to programming. I have been in construction for years, I had an idea and I am trying to do some things in VB, I have done OK so far. However I am stuck with some math items.

ON My DB and form I have as many as 7 textbox fields I want to do math on and have the answer appear in another textbox at the bottom of my form.

Raw math lools like this:

textbox5 - (textbox1 + textbox2) - textbox6 I want the answer to show in textbox20

this is similar but:
textbox5 - (textbox1 + textbox2) - textbox6 / textbox8 I want the answer to show in textbox21

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I started a new project to test with just 3 boxes just to try and get it to show the answer This was the first step in baby steps - and started with this

Dim A As Double = TextBox1.Text
Dim B As Double = TextBox2.Text
Dim C As Double

Int(A = Convert.ToInt32(TextBox1.Text))
Int(B = Convert.ToInt32(TextBox2.Text))
Int(C = Convert.ToInt32(TextBox2.Text))
Int(C = A + B)
TextBox3.Text = Convert.ToInt32(C)


But it just returns a zero? I am sure I have the whole thing wrong.