public override bool Validate()
{
if (!IsChanged)
{
return(true);
}
var _isValid = !string.IsNullOrEmpty(Keyword) || (string.IsNullOrEmpty(ImageAltDescription) && string.IsNullOrEmpty(Title) && string.IsNullOrEmpty(MetaDescription));
if (_isValid)
{
if (!string.IsNullOrEmpty(Keyword))
{
_isValid = !(Keyword.IndexOfAny(InvalidKeywordCharacters.ToCharArray()) > -1);
if (!_isValid)
{
SetError("Keyword", string.Format(@"Keyword can't contain {0} characters".Localize(), InvalidKeywordCharacters), true);
}
}
}
else
{
SetError("Keyword", @"Keyword is required".Localize(), true);
}
if (_isValid)
{
ClearError("Keyword");
}
return(_isValid);
}