Ability for a grid to show foreign key values from a remote datasource rather than just a fixed array.

Refer to: http://www.kendoui.com/forums/ui/grid/foreign-key-option-doesn-t-work.aspx

When endless scrolling and grouping is enabled on the KendoUI grid, collapsing large groups causes the grid to load ALL the hidden detail rows into the DOM.

This takes a very long time for the grid to do, as well it violates the whole point of a paging system. (ie I only want you to load X records at a time). Afterwards the performance of entire website (including the grid) will be very poor since potentially thousands of rows have been loaded into the grid and then immediately hidden. Additionally, these rows do not add any value to the user, since they are all hidden anyways.

When a category is collapsed, the grid should NOT add any new rows for that category to the DOM.

I have included a sample that demonstrates the performance issues.

I have a list of entities with a large set of fields, but I don't want to load and display all of them in the grid. Entities have also a couple of complex properties which are displayed via checkbox lists.

Though, I want them to appear when editing a single entity.

For now, I'm using custom "create" and "edit" pages, but it would be great to have an "url" option for popup editing. This url would return some html (MVC partial view in my case) which would be rendered in the popup window.

Confirmation messaage required to before delete record from a data grid. It should be looks like 'Are you sure you want to delete the record

Having custom sorting on the grid is really handy. 
But with its current implementation, we are not capable of setting this sorting logic on load.

I opened a support ticket for this issue (see below), and now I'm considering extending this behaviour myself, if I can manage the time that is.

http://www.telerik.com/account/support-tickets/view-ticket.aspx?threadid=931220

However, it would be so much better if this was supported out of the box

http://dojo.telerik.com/IFoYA/2

When performing Edit on a real-time grid, hide edit button to prevent simultaneous editing and data overwrite. 

There was a similar solution previous to signalR integration, http://www.telerik.com/forums/using-kendoui-grid-with-signalr#-3DZMT4HHE-rOWdEf_1mgQ

But with SignalR enabled grid, this could all be  built-in.

The groupHeaderTemplate property for a column can only be set if initializing a grid and defining columns via javascript.

The following post describes the issue and the area that requires modification (Grid._columns):

http://stackoverflow.com/questions/16348291/how-do-i-set-the-groupheadertemplate-for-kendo-grid-column-using-data-attributes

The grid popup editor is great but when you have a large number of fields to edit the height of the popup window becomes impractical.

What would work much better would be to split the single column of fields into two or more columns making the window wider but shorter and ultimately more manageable.

Maybe the popup could have a "columns" configuration option to allow for this type of functionality.

To me these are all glaring bugs, especially for those who like to use their keyboard instead of their mouse to fill out forms.

1. Mouse scrolling drop downs/comboboxes scrolls the page when it hits the top/bottom.
2. Enter key opens/closes subgrid instead of putting cell into/out of edit mode.
3. Backspace in drop downs causes browser to go back to the previous page.
4. Comboboxes, when filtering, should always "select" the highlighted item when tab is pressed.(the little auto-complete hack/setting doesn't cut it)
5. There is no easy keyboard way to open drop downs and date pickers in the grid.
6. Tabbing to a button cell and hitting Enter does not click the button.

Enable on-the-fly changes of selectable (selection mode) in the Grid widget

In your grid demos titled "binding to remote data" filter for column ship city when i choose operator does not contain operator and fill "Rio" value kendo grid sends empty filter GET parameter. I have observed similar bevavior in my project.

My Kendo grid has long column titles but the column width must remain static so we need a way to make a wrapable column header

The loading indicator is not showing when the height property of a grid is not set.

Virtual scrolling does not work for big datasets in IE and Firefox. We need adaptive scrolling 
http://stackoverflow.com/questions/2402953/javascript-data-grid-for-millions-of-rows

In google datavisualization grid, one can use cell formatters to add an excel type visualization to a cell. This could be a bar left to right showing the relative size of a value to the rest of the values. This could be an arrow comparing the result to another column either hidden or visible. This could be a color showing between red and green. The color could for instance get closer to red as they get more below 0. This is an amazing feature in google and easily configurable. It would be great of your grid could do the same.

It's a common scenario to set custom css on <td> for specific column, for example, using columns: { field: "ScoreNumber", css: "right-align", title: "Score" } to get <td class='right-align'>, then I can make every every score field text-align: right.

Maybe adjusting _tmpl: in Grid Widget as 
rowTemplate += "<td" + (column.css ? " class='" + column.css + "'" : "") + ">"; is a easy way to accomplish it.

It would be really great if Kendo implemented JQuery Promises on all methods that are fired asynchronously. There are several places where there would be direct and tangible benefits:

1) DataSource: Methods like fetch() and read() would be able to chained with .then(), .fail(), and .always() in order to complete certain operations after these methods have completed, but before events are fired up the chain.

2) UI controls like Grid: calling KendoGrid.saveChanges() would allow you to chain a .then() function to the end, so that a particular function can be called only when a particular instance of saveChanges completes, not every time the requestEnd event is fired on the DataSource.

With a batch edit grid, it would be nice to have the ability to cancel a data operation if cells have been edited.  Currently if the user edits some cells and then does a filter or paging operation before they save their changes, there is no way to warn them and prevent the operation from taking place.  So they will lose their changes.  Ideally, I'd like to have an event that fires before the read() operation is called on the datasource which would allow the read to be cancelled.

Please add horizontal navigation with arrow keys when the grid area is smaller than the container window and there are scrollbars. See demo here: http://jsfiddle.net/epqR4/. The vertical navigation with arrows works fine, but horizontal does not.

When using multiple sort mode in a grid, visualize the sort order in which the grid is sorted. For example, displaying the sort order as 1,2,3,.. on the respective column headers. Without such an indication the user has no idea what sort order has been used.