private bool IsAttributeValid(string attributeName, string value)
{
if (AllowedAttributes != null)
{
// No attributes are allowed
if (!AllowedAttributes.Any())
{
return(false);
}
if (!AllowedAttributes.Contains(attributeName))
{
return(false);
}
}
if (RequiredAttributes != null)
{
if (value == null && RequiredAttributes.Contains(attributeName))
{
// Don't delete any required attributes
return(false);
}
}
if (AllowedValues != null)
{
if (AllowedValues.TryGetValue(attributeName, out var allowed) && !allowed.Contains(value.Trim()))
{
return(false);
}
}
if (DisallowedValues != null)
{
if (DisallowedValues.TryGetValue(attributeName, out var disallowed) && disallowed.Contains(value.Trim()))
{
return(false);
}
}
return(true);
}