/// <summary>
/// </summary>
/// <returns>s 0 if equal, -1 if this object is less than the parameter, +1 if it is greater
/// </returns>
public System.Int16 CompareTo(TVariant v)
{
System.Int16 ReturnValue;
ReturnValue = 0;
if ((TypeVariant == eVariantTypes.eDecimal) || (TypeVariant == eVariantTypes.eInteger) || (TypeVariant == eVariantTypes.eInt64)
|| (TypeVariant == eVariantTypes.eCurrency))
{
if (ToDecimal() == v.ToDecimal())
{
ReturnValue = 0;
}
else if (ToDecimal() < v.ToDecimal())
{
ReturnValue = -1;
}
else
{
ReturnValue = +1;
}
}
else if (TypeVariant == eVariantTypes.eDateTime)
{
ReturnValue = (short)System.DateTime.Compare(ToDate(), v.ToDate());
}
else if (TypeVariant == eVariantTypes.eString)
{
// test if perhaps boolean values are compared; trouble is, yes and no and true and false are used
if (ComparingBooleanValues(v))
{
if (ToBool() == v.ToBool())
{
ReturnValue = 0;
}
else if (ToBool() == false)
{
ReturnValue = -1;
}
else
{
ReturnValue = 1;
}
}
else
{
ReturnValue = (short)String.Compare(ToString(), v.ToString());
}
}
else if (TypeVariant == eVariantTypes.eBoolean)
{
if (ToBool() == v.ToBool())
{
ReturnValue = 0;
}
else if (ToBool() == false)
{
ReturnValue = -1;
}
else
{
ReturnValue = 1;
}
}
else if (TypeVariant == eVariantTypes.eComposite)
{
// just compare the first elements
ReturnValue = FirstCompositeValue().CompareTo(v.FirstCompositeValue());
}
return ReturnValue;
}
