public IEnumerable <ValidationResult> Validate(ValidationContext validationContext)
{
if (!(To?.Any() ?? false))
{
yield return(new ValidationResult("At least one recipient must be supplied", new string[] { nameof(To) }));
}
IEnumerable <string> invalid;
if (!ValidationUtils.AreAllValidEmailAddresses(To, out invalid))
{
yield return(new ValidationResult("Not all 'To' email addresses are valid: " + string.Join(", ", invalid), new string[] { nameof(To) }));
}
if (!ValidationUtils.AreAllValidEmailAddresses(CC, out invalid))
{
yield return(new ValidationResult("Not all 'CC' email addresses are valid: " + string.Join(", ", invalid), new string[] { nameof(To) }));
}
if (!ValidationUtils.AreAllValidEmailAddresses(To, out invalid))
{
yield return(new ValidationResult("Not all 'Bcc' email addresses are valid: " + string.Join(", ", invalid), new string[] { nameof(To) }));
}
if (!Template.HasValue && string.IsNullOrWhiteSpace(Body))
{
yield return(new ValidationResult("If no template was supplied, then body text is required", new string[] { nameof(Body) }));
}
}
