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Count selected rows

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Raphael
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Raphael asked on 16 Oct 2017, 03:03 PM

Hello,

I'm currently searching for a smart way to display the number of selected rows in a Grid.

In my grid I have a select column to select items and a second column that shows the information:

columns.Select().Width(30);
columns.Bound(item => item.Name).ClientFooterTemplate("All items: #=count#");

 

This is the corresponding aggregate for the item counter:

.Aggregates(aggregates => aggregates.Add(item => item.Name).Count())

 

What I want to archive is that the footer template is also showing the number of selected items.

Pseudocode (which is obviously not working):

columns.Bound(item => item.Name).ClientFooterTemplate("All items: #=count#<br>Selected items: #=selectedCount#")

 

The only way I found to show the selected item count is to manipulate the DOM ($(".k-footer-template td:nth-child(2)")) when the grid change event is firing.

Does anybody have a smarter solution for my problem?

Any help is appreciated!

Regards

Raphael

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Stefan
Telerik team
answered on 18 Oct 2017, 08:20 AM
Hello, Raphael,

Currently, the used jQuery approach to programmatically change the value of the footer is a valid one. This is required as the Grid will re-render only if a value of the bound columns is changed.

In this scenario, we can also suggest adding a span element with specific class with will hold the selected count. This will ensure that the selector is specific and it will not interfere with the built-in elements of the Grid.

columns.Bound(item => item.Name).ClientFooterTemplate("All items: #=count#<br>Selected items: <span class='count'>0</span>")

Also, I can suggest submitting a feature request, to add the number of selected rows as a variable available in the templates. Then based on its popularity we may implement it in a future release:

http://kendoui-feedback.telerik.com/forums/127393-kendo-ui-feedback/category/170280-grid

Regards,
Stefan
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Raphael
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answered on 19 Oct 2017, 09:46 AM

Hello Stefan,

the hint to use a span element with a specific class is very thank.

Thank you for your help!

Regards

Raphael

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Stefan
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Raphael
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