Question

I have a method to return a group of objects as a generic list which I then bind to a Repeater. I want to implement paging on the repeater using the PagedDataSource class but I’m not sure that this is possible as it doesn’t seem to work.

Will I have to change the return type of my method or is it possible to bind the PagedDataSource to the generic list?

Answer 1

I’ve just modified some of my code to use a generic list and seems to have worked fine, hope this helps:

Note that this entire method can be called with or without a page number to automatically set the page, it also builds a paging control inside of a panel calling PagingPanel.

The line that sets the DataSource on the PagedDataSource instance (dataSource) did take an array of NewsItems (searchResults), I’ve updated it to consume a List that’s created using the NewItem array.

void PopulateNewsItems (int? pageNo) {     var model = ModelFactory.GetNewsModel ();     var searchResults = model.GetNewsItems ();      var dataSource = new PagedDataSource ();      // CHANGED THE ARRAY OF NEWSITEMS INTO A GENERIC LIST OF NEWSITEMS.     dataSource.DataSource = new List<NewsItem> (searchResults);     dataSource.AllowPaging = true;      var pageSizeFromConfig = ConfigurationManager.AppSettings['NewsItemsPageCount'];     var pageSize = 10;      int.TryParse (pageSizeFromConfig, out pageSize);      dataSource.PageSize = pageSize;     dataSource.CurrentPageIndex = pageNo ?? 0;      PagingPanel.Controls.Clear ();     for (var i = 0; i < dataSource.PageCount; i++)     {         var linkButton = new LinkButton ();         linkButton.CommandArgument = i.ToString ();         linkButton.CommandName = 'PageNo';         linkButton.Command += NavigationCommand;         linkButton.ID = string.Format ('PageNo{0}LinkButton', i);         if (pageNo == i || (pageNo == null && i == 0))         {             linkButton.Enabled = false;             linkButton.CssClass = 'SelectedPageLink';         }          linkButton.Text = (i + 1).ToString ();          PagingPanel.Controls.Add (linkButton);         if (i < (dataSource.PageCount - 1))             PagingPanel.Controls.Add (new LiteralControl ('|'));     }      NewsRepeater.DataSource = dataSource;     NewsRepeater.DataBind (); }  void NavigationCommand (object sender, CommandEventArgs e) {     PopulateNewsItems (int.Parse ((string)e.CommandArgument)); }