private SyndicationTextInput TryReadTextInputFromExtension(SyndicationElementExtensionCollection elementExtensions)
{
SyndicationElementExtension textInputElement = elementExtensions
.Where(e => e.OuterName == Rss20Constants.TextInputTag && e.OuterNamespace == Rss20Constants.Rss20Namespace)
.FirstOrDefault();
if (textInputElement == null)
{
return(null);
}
var textInput = new SyndicationTextInput();
using (XmlReader reader = textInputElement.GetReader())
{
reader.ReadStartElement();
while (reader.IsStartElement())
{
string name = reader.LocalName;
string value = reader.ReadElementString();
switch (name)
{
case Rss20Constants.DescriptionTag:
textInput.Description = value;
break;
case Rss20Constants.TitleTag:
textInput.Title = value;
break;
case Rss20Constants.LinkTag:
textInput.Link = new SyndicationLink(new Uri(value, UriKind.RelativeOrAbsolute));
break;
case Rss20Constants.NameTag:
textInput.Name = value;
break;
default:
break;
}
}
reader.ReadEndElement();
}
return(IsValidTextInput(textInput) ? textInput : null);
}
private static bool IsValidTextInput(SyndicationTextInput textInput)
{
//All textInput items are required, we check if all items were instantiated.
return(textInput.Description != null && textInput.Title != null && textInput.Name != null && textInput.Link != null);
}
