I am stuck on how to implment paging when retrieving images from my rss feed. I have a helper also to render the html for the pager links. However i am not sure what to do in the Index action. My code is as follows:
In my controller:
Public Function Index() As ActionResult
Dim feedurl As String = "http://riderdesign.net/p290530166/recent.rss"
Using x = XmlReader.Create(feedurl)
Dim r = XDocument.Load(x)
Dim mediapfx As XNamespace = "http://search.yahoo.com/mrss/"
' Dim rssfeed = SyndicationFeed.Load(x)
Dim ml = From item In r.Descendants(mediapfx + "content") Select item
Dim PageSize As Integer = Configuration.ConfigurationManager.AppSettings.Get("PageSize")
Dim medialist = From item In r.Descendants("item") Select New MediaImage With {
.Alt = item.Element("title"), .ImageUrl = item.Element("link"), .ThumbnailUrl = TryGetAttributeValue(item.Element(mediapfx + "thumbnail"), "url"), .Height = TryGetAttributeValue(item.Element(mediapfx + "thumbnail"), "height"), .Width = TryGetAttributeValue(item.Element(mediapfx + "thumbnail"), "width")} Take PageSize
Return View(medialist)
End Using
End Function
PagedData class:
Public Class PagedData
Public Property TotalItems As Integer
Public Property ItemsPerPage As Integer
Public Property CurrentPage As Integer
ReadOnly Property TotalPages As Integer
Get
Return Convert.ToInt32(Math.Ceiling(Convert.ToDecimal(TotalItems / ItemsPerPage)))
End Get
End Property
End Class
And my paging view model
mvcPublic Class PagingViewModel
Property Images As IEnumerable(Of MediaImage)
Property Paging As Pager
End Class
Paging helper:
Public Class PagingHelper
Public Shared Function PageLinks(ByVal html As HtmlHelper, ByVal Page As Pager, ByVal pageUrl As Func(Of Integer, String)) As MvcHtmlString
Dim r As StringBuilder = New StringBuilder
For i = 1 To Page.TotalPages
Dim tag As TagBuilder = New TagBuilder("a")
tag.MergeAttribute("href", pageUrl(i))
tag.InnerHtml = i.ToString
If i = Page.CurrentPage Then
tag.AddCssClass("selected")
r.Append(tag.ToString)
End If
Return MvcHtmlString.Create(r.ToString)
Next
End Function
I implemented paging using Troy Goode's PagedList and its associated helper. I call the ToPagedList extension method and use the helper to render the links for paging. I did download the souce for the helper and modify it however to render spans instead of an unordered list for the paging links.