How would I get the number after a decimal point in VB.NET

Question

Can anyone give me an easy way to find out the numbers after the decimal point of the double?
All i need to do is to find out if the number ends in 0 like 1.0 or 10.0 or 32

Answer 1

If you are using any of the numeric data types (e.g. double, single, integer, decimal), you cannot represent 10.0 and 10 as two different and distinct values. There is no way to do that. If you need to keep the mantissa of the number, even when it is zero, you will have to store the value as some other data type such as a string.

To validate a string that has been entered, you could do something like this:

Public Function MantissaIsZero(ByVal value As String) As Boolean
    Dim result As Boolean = False
    Dim parts() As String = value.Split("."c)
    If parts.Length = 2 Then
        Dim mantissa As Integer = 0
        If Integer.TryParse(parts(1), mantissa) Then
            result = (mantissa = 0)
        End If
    End If
    Return result
End Function