How to disable Keyboard events for TreeGrid?

Thread ID:	Created:	Updated:	Platform:	Replies:
149902	Dec 13,2019 11:32 AM UTC	Dec 16,2019 11:44 AM UTC	Angular - EJ 2	1

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Tags: TreeGrid

Shreekumar

Asked On December 13, 2019 11:32 AM UTC

I'm using Angular Version of TreeGrid. In which, some of the rows are not grouped and when I select a row and apply a keyboard event on such rows I'm getting following error:

How to disable Keyboard events for TreeGrid?

main.0c3400941a0a4d3d3ebf.js:1 TypeError: Cannot read property 'rowIndex' of undefined

at t.getCollapseExpandRecords (main.0c3400941a0a4d3d3ebf.js:1)

at t.expandRow (main.0c3400941a0a4d3d3ebf.js:1)

at t.expandCollapseAll (main.0c3400941a0a4d3d3ebf.js:1)

at t.expandAll (main.0c3400941a0a4d3d3ebf.js:1)

at t.treeGridkeyActionHandler (main.0c3400941a0a4d3d3ebf.js:1)

at HTMLElement.r.keyPressHandler (main.0c3400941a0a4d3d3ebf.js:1)

at e.invokeTask (polyfills.73b3aeabbeaddf4bfcc2.js:1)

at Object.onInvokeTask (main.0c3400941a0a4d3d3ebf.js:1)

at e.invokeTask (polyfills.73b3aeabbeaddf4bfcc2.js:1)

at t.runTask (polyfills.73b3aeabbeaddf4bfcc2.js:1)

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Gowri Loganathan [Syncfusion]

Replied On December 16, 2019 11:44 AM UTC

Hi Shreekumar,

Thanks for contacting Syncfusion Support.

Query: How to disable Keyboard events for TreeGrid?

We have analysed your query at our end and we suggest you to give allowKeyboard:false in the load event to disable the keyboard events for TreeGrid.

Please refer to the below code snippet:-

……………

@Component({

selector: 'app-container',

template: `<ejs-treegrid [dataSource]='data' (load)='load($event)' [treeColumnIndex]='1' childMapping='subtasks'>

<e-columns>

<e-column field='taskID' headerText='Task ID' textAlign='Right' width=70></e-column>

<e-column field='taskName' headerText='Task Name' textAlign='Left' width=200></e-column>

<e-column field='startDate' headerText='Start Date' textAlign='Right' format='yMd' width=90></e-column>

<e-column field='duration' headerText='Duration' textAlign='Right' width=80></e-column>

</e-columns>

</ejs-treegrid>`

})

.. . . . . .. . . . . . .

//Define load event//

load(args:Object){

var treegrid=document.getElementsByClassName("e-treegrid")[0].ej2_instances[0];

treegrid.allowKeyboard=false;

}

Kindly refer the below sample link and API link:

Link: https://stackblitz.com/edit/angular-ss2snx?file=app.component.ts

Load event : https://ej2.syncfusion.com/angular/documentation/api/treegrid/#load

Please get back to us ,if you need any further assistance on this.

Regards,
Gowri V L.

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