split a Decimal in vb.net

Question

I am sure this is very simple problem, but I am new to vb.net so am having an issue with it.

I have a Decimal variable and I need to split it into two seperate variables, one containing the integer part, and one containing the fractional part.

eg for x = 12.34 you would end up with a y = 12 and a z = 0.34

Are there any nice built in functions to do this or do I have to try and work it out manually.

Many thanks in advance

Answer 1

You can use Math.Truncate(decimal) and then subtract that from the original. Be aware that that will give you a negative value for both parts if the input is decimal (e.g. -1.5 => -1, -.5)

EDIT: Here's a version of Eduardo's code which uses decimal throughout:

Sub SplitDecimal(ByVal number As Decimal, ByRef wholePart As Decimal, _
                 ByRef fractionalPart As Decimal)
    wholePart = Math.Truncate(number)
    fractionalPart = number - wholePart
End Sub

Answer 2

Edit: (as Jon Skeet says) Beware that the integer part of a decimal can be greater than an integer, but this function will get you the idea.

    Sub SlipDecimal(ByVal Number As Decimal, ByRef IntegerPart As Integer, _
                    ByRef DecimalPart As Decimal)
        IntegerPart = Int(Number)
        DecimalPart = Number - IntegerPart
    End Sub

Use the Jon version if you are using big numbers.