number with point

thank you i tried both of the ideas both of them work for me very well but i used the second one i have many calculation so i did that method on "text chenged method" Dim ib As Double ib = txtboxibmol.Text ib = Math.Round(ib, 3) txtboxibmol.Text = ib thank you again

Even better, you may want to round out the number to the nearest hundredth: num = Math.Round(num, 2) This will return a double number to 2 places after the decimal point.

thank you very very much i just got home from work so ill try it later thank you again

I'm assuming that you're using the Double type for your variable. If so you can either use the Format function of VB or the Double.ToString function of the framework. I like to use the framework whenever possible so my example will show you that method. Dim myNumber as Double Dim str as String str = myNumber.ToString("f2") ToString converts the number to a string value and "f2" indicates that you want the format as "Fixed to 2 decimal places"