[Solved] Custom keyboard navigation, column virtualizing and multiple cell selection

[Jerome]

Hi,

I'm currently working on a project that has a datagrid with 91 columns that acts as
a sort of calendar. The colums contain the specific day in a selected period, the
rows contain the different resources (people).

I have a few questions regarding implementation of the above scenario.

1. If 91 columns are added to the grid (and databound) the load time increases
   very much (14 seconds if we have 50 people in the grid) and scrolling becomes
   very slugish. It seems that large number of colums is responsible for this, not the
   number of rows.
   
   Q : Do you plan to release a DataGrid version with colum virtualization soon?
   Or have you any recommendations to speed things up?
   
2. Currently the behavior of selecting other cells is to hit TAB (or Shift TAB). Selecting
   the cell above or below is not possible without using the mouse. It should also be
   possible to hit enter to set the cell to edit mode.
   
   Q : Is it possible to use the arrow keys (up, down, left, right) to select the cells
   above, below, left and right of the current selected cell?
   
3. In our scenario it should be possible to select a period for a person/resource (a number
   of cells in the current row).
   
   Q : Can I select a number of cells in a row, using the mouse or keyboard?
   Currently I can only select multiple rows, not cells.
   

I hope someone can help me with the above questions!

Kind regards,

Jerome

 

[Hristo]

Hello Jerome,

Straight to your questions:

1. You are right - we don't have column virtualization so this is why it is slow. We are working on horizontal virtualization and we will do our best to release it for Q2.
2. Arrows support will be added for Q2 release. We plan to provide functionality that allows you to specify which key will start the edit mode but i cannot give any estimation yet.
3. We will add support for cells selection but most probably this will be for Q3 release.

Thank you for the feedback.
Let us know if you need more information.

Regards,

Hristo
the Telerik team

 

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