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CellEditTemplate Issue

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GridView
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JIG
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JIG asked on 18 Feb 2019, 09:12 AM

I have a celledittemplate with a button inside that template, bound with command and command parameter.

When i enter the cell in edit mode it initializes the command but it is missing it's datacontext.
I found out that when i retrigger my command's RaiseCanExecuteChanged on the PreparedCellForEdit the datacontext is known.

So i was wondering if the datacontext is being set to late on the celledittemplate.
I would find it rather stupid to have to use the PreparedCellForEdit event everytime i need this behaviour

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Martin Ivanov
Telerik team
answered on 21 Feb 2019, 09:01 AM
Hello Jimmy,

Yes, you are right. The data context comes a bit after the initial data binding evaluation. Usually, this is okay because when the data context appears, the bindings re-evaluate and everything works properly. But when using commands you will need to raise the CanExecute handler manually when the cell is loaded. A possible approach for this would be to use the PreparedCellForEdit event as you are already doing. Or you can use a custom column that you can re-use across the different RadGridView instances you are using. You can raise the command in the PrepareCellForEdit() override of the column. I've attached a small example showing this approach. I hope it helps.

Regards,
Martin Ivanov
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JIG
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Martin Ivanov
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