My framework main application class is defining those properties:

    Public oCultureInfoEnglish As CultureInfo = Nothing
    Public oCultureInfoFrench As CultureInfo = Nothing
    Public oCultureInfoSpanish As CultureInfo = Nothing
    Public oCultureInfoPortuguese As CultureInfo = Nothing

The values are this:

        oCultureInfoEnglish = New CultureInfo("en-US")
        oCultureInfoFrench = New CultureInfo("fr-CA")
        oCultureInfoSpanish = New CultureInfo("en-US")
        oCultureInfoPortuguese = New CultureInfo("en-US")

I have a function to display a numeric value as follow:

    ' Format a value
    ' expN1 Value
    ' expC1 Separator
    ' expN2 Number of decimals
    Public Function GetFormatValue(ByVal tnValue As Double, ByVal tcSeparator As String, _
     ByVal tnDecimal As Integer) As String
        Dim lcValue As String = ""
        Dim loCultureInfo As CultureInfo = Nothing

        ' Based on the language
        Select Case nLanguage

            ' English
            Case 1
                loCultureInfo = oApp.oCultureInfoEnglish

                ' French
            Case 2
                loCultureInfo = oApp.oCultureInfoFrench

                ' Spanish
            Case 3
                loCultureInfo = oApp.oCultureInfoSpanish

                ' Portuguese
            Case 4
                loCultureInfo = oApp.oCultureInfoPortuguese

        End Select

        loCultureInfo.NumberFormat.NumberDecimalSeparator = "."
        loCultureInfo.NumberFormat.NumberGroupSeparator = tcSeparator
        loCultureInfo.NumberFormat.NumberDecimalDigits = tnDecimal

        lcValue = tnValue.ToString("N", loCultureInfo)

        Return lcValue
    End Function

On some very rare situations, I have found that my value is being shown such as 30.000 where it should be 30.

There seems to be a mixup of the memory in the usage of this culture info.

My method receives 0 for the tnDecimal parameter. So, by looking at this method, it should be displayed 30 and not 30.000. The only time I should have decimals is if the method receives 3, for example, as the tnDecimal parameter value, which would then end up with 30.000.

As this is random, and on a very rare occasions, I am assuming this is a memory issue. I cannot reproduce this. I have observed this twice and at first I thought I had seen it wrong. But, when I saw it a second time, I figured something is wrong.

Anyone would know what could be wrong here?