How to make calculation on text boxes

Question

I have three text boxes Textbox1 Textbox2 Textbox3.Now according to the project requirements if the user put an integer value 3 or high in box first then the 2nd box should show 1 and then this value should be show automatically in box third.and if the value in box first is less then 3 the the second box should show 0 or -. and then this value should show in box 3.
Please guide me .

my 2nd question is that what is the method to make calculation in text box.

Ranjit Powar · Answer

Try this Private Sub TextBox1_TextChanged(ByVal sender As System.Object ByVal e As System.EventArgs) Handles TextBox1.TextChanged If (String.IsNullOrEmpty(TextBox1.Text)) Then Return End If If (Convert.ToInt32(TextBox1.Text) >= 3) Then TextBox2.Text = 1 TextBox3.Text = TextBox1.Text Else TextBox2.Text = 0 TextBox3.Text = TextBox1.Text End If End Sub

Mohammad Ishaq · Answer

Yes it is Ok .You are a great man and great programmer thanks for your nice help

Rahul Jain · Answer

In this site you can ask for solution to a problem you show us the code which is not working properly and we help you but implementing something completely for you I think it is out of scope. I would try something and then ask