There are only two methods of ForumManger class that support sorting
GetPosts(Guid parentID, bool descending, bool visibleOnly) - Gets all child posts of the specified parent. If the second parameter is true you will get results sorted in descending order
The second method gets only categories in a sorted order -GetCategories(string sortExpr)
The only way to have some sorting is creating a custom data provider and using SQL-LINQ to sort the list of IPosts that is returned
ForumDataProviderCustom : Telerik.Forums.Data.DefaultProvider
IList GetForums(ICategory category,
// return base.GetForums(category, excludeHidden);
List<IForum> customList =
IList list =
// here use LINQ to sort the list and finally return it
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