The C# Equivalent of the VB.NET IsNumeric Function

IsNumeric.cs

static bool IsNumeric(object Expression)
{
    bool isNum;
    double retNum;
    isNum = Double.TryParse(Convert.ToString(Expression), System.Globalization.NumberStyles.Any, System.Globalization.NumberFormatInfo.InvariantInfo, out retNum );
    
    return isNum;
}