If possible, please consider making the Kendo DataSource compatible with the data returned from using an ASP.NET MVC 4 Web API project possibly by adding a 'webapi' dataType.
Add sort/filter events or add an extra parameter in the 'change' event object so that we can detect if a data source was filtered or it was sorted.(Mostly needed when working with grids)
There has been many scenarios where I've needed to know when a DataSource finishes a "read" or "sync" operation. I know there's the global "sync" event that I can bind to, but a lot of the time I only care about the result of one specific sync call. I can use the "one" method to only listen to it once, but this complicates things when I also care about errors. Since I need to register callbacks for both the "sync" and "error" events, and then unregister either one or the other, depending on which event fired. It's even harder hooking into a "read" event because the DataSource doesn't expose one. I know I can hook into the "change" event of the DataSource, but I still have to guess whether the change event was fired because of read, or because of some other change. If these methods returned a deferred it would be a lot easier to handle the circumstances where an app needs to do additional things after a "read" or "sync" is completed.
Option to refresh one item from a datasource from the server using a GET request using the transport read url appended with the item ID field value. See: http://www.kendoui.com//forums/framework/data-source/how-to-refresh-an-item-in-a-datasource-with-server-data.aspx
Possibility to add filters to hierarchical datasource, that execute recursively. Use case: In TreeView we need to search for some element text, we need to see elements that contain some text and their parents expanded. Filtering could be usefull here.
Though KendoUI already has an MVVM style binding, it would be much better to have a css binding allowing us to set class on HTML elements based on arbitrary conditions. Just look at the Knockoutjs css binding.
Add a visible property to the column items for the grid control. Then provide the value in the view-model. This would allow us to declare the columns in html and manage their visibility in the business logic.
Add support for automatic polling/refresh on DataSource. Property: interval in milliseconds
signalR gives the possibility to quasi direct connection to the server side with easy parameter passing and easy implementation.
"WebAPI now uses the DateTimeOffset time as a main type when it comes to dates. However DateTimeOffet requires the Model(that the dataSource creates) to keep information for both Date and Offset which is not possible with the current architecture of the DataSource and Model of Kendo." Based on http://docs.telerik.com/kendo-ui/aspnet-mvc/helpers/grid/how-to/oData-v4-web-api-controller Please add full support, also when working with Dates. Thanks.
Mobile app should be able to save the data locally in the mobile device and when online network status is detected, should have the mechanism to synchronize the local data back to the server. I asked this during the webcast demo about supporting the html5 local web storage or the html5 indexeddb.
We are evaluating migrating from Asp MVC to KendoUI (MVC), which looks promising. However, there is one BIG problem we have encountered: Cell values of null are displayed as "Null" instead of as ""! I really urge you to change this since this would require large changes to very many places otherwise. At least an option to select the behaviour. Thanks /Victor
Like many other Kendo components, the treeview is not mature enough to be considered to display dynamic hierarchical data in a LOB application (features limit its use to a static web site). I can only recommend to urgently add databinding to a datasource. Then you will have to consider loading the dataSource on demand. See http://demos.telerik.com/aspnet-mvc/treeview/ajaxloading
The DataSource API currently includes the methods pushCreate, pushDestroy, and pushUpdate. These methods roughly correspond to add, remove, and set. Unfortunately there is no pushInsert to enable adding new items to the data source at a specific position. Adding such a method would be consistent with the existing add/remove/insert methods.
One should be able to group by a specified field, and then sort the groups themselves NOT by that field but by another field. For instance, it is currently not possible to sort data by its name but order it by its date.
I know you're continuing to improve the kendo/angular integration, but with the rise of full single page applciationsI think you need a deeper integration between the data source and the use of $http (ie services or resources), to cater for such things as custom http headers (for authentication/authorization, application state, etc), which are often set using http interceptors. A typical example is an authentication token. I'd rather use the grid & data sources' built in functionality such as just setting the url for the source of the data, but this doesn't allow any way to set custom http headers to have the auth token sent along with the request. I see two options: 1. Allow the dataSource to use $http directly for its transport, thereby piggy-backing ontop of the angular http architecture. 2. Keep what you have and allow the requestStart event to have access to the HTTP Headers collection, thus allowing us to modify them before the request gets sent.