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custom commands - 'RaiseCanExecuteChanged'

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DataForm
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jen
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jen asked on 21 Mar 2013, 03:41 PM
I have a radDataform and I'm customizing the Commands using the DataFormCommandProvider.

In edit mode, when I change a property in my current item, I do some validation, and add or remove ValidationErrors manually.
At this point I need the Commit button to re-run its CanCommitEditExecute() logic, to realize it can't commit while there are validation errors.

How do i trigger the CanCommitEditExecute() logic to re-run?
if it were a DelegateCommand I would just call RaiseCanExecuteChanged() on it, but I can't find anything like that here.

thanks

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Ivan Ivanov
Telerik team
answered on 26 Mar 2013, 05:06 PM
Hi,

 We are using CommandManager, so that CommandManager.InvalidateRequerySuggested should do the trick. May, I ask you to try it on your side?

All the best,
Ivan Ivanov
the Telerik team

Explore the entire Telerik portfolio by downloading Telerik DevCraft Ultimate.

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jen
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answered on 26 Mar 2013, 07:20 PM
Thanks Ivan,
but DataFormCommandProvider doesn't have public access to anything called .InvalidateRequerySuggested()

I have found a way around needing this. Instead of updating the buttons, the user can click commit, it will go through validation, then stay in edit mode if the validation fails.
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Ivan Ivanov
Telerik team
answered on 28 Mar 2013, 02:30 PM
Hello,

 I have prepared a sample project for you. It is attached for your reference.

All the best,
Ivan Ivanov
the Telerik team

Explore the entire Telerik portfolio by downloading Telerik DevCraft Ultimate.

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Ivan Ivanov
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