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bug ... validation summary not receiving validation errors

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GridView

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David Ocasio asked on 05 Jan 2012, 02:15 PM

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the latest released version of silverlight 4 controls are suppressing validation errors when a cell is edited.

that is the error does not bubble up to the validation summary.

Example if i enter alpha chars in a integer column the summary does not show "bad input format" the cell does highlight the error.
It worked the last version you had.

See enclosed snapshots.

22 Answers, 1 is accepted

Accepted

answered on 19 Jan 2012, 05:09 PM

Nick,

As Nedyalko Nikolov has indicated,

The problem is fixed with there latest internal build.
The validation error bubbles correctly to the valdation summary.

The only issue i still have is with a textbox that is open in a cell-template
not the edit-template. Validations errors in that case are not being exposed.

i fixed that by handling the validation summary directly.

thanks
dco

answered on 06 Mar 2012, 10:45 PM

Hi Nedyalko

I am currently running build: 2012.1.215.1050 and I am not updating again as I have done this about 4 times trying to fix the issue.

I cannot give you our full project or have time to build a small proof project. The issue is simple however, when ever you use a cell template and put a control within the column and data validation exceptions do not bubble up, for example:

<telerik:GridViewColumn Header="Min">                         
    <telerik:GridViewColumn.CellTemplate>                             
        <DataTemplate>                                 
            <StackPanel Orientation="Horizontal">                                     
                <telerik:RadNumericUpDown Value="{Binding AttendanceMin, Mode=TwoWay, ValidatesOnNotifyDataErrors=True, ValidatesOnExceptions=true, NotifyOnValidationError=True}" NumberDecimalDigits="0" Minimum="0" SmallChange="1" LargeChange="10" />                                 
            </StackPanel>                             
        </DataTemplate>                         
    </telerik:GridViewColumn.CellTemplate>                     
</telerik:GridViewColumn>

I am going to raise a ticket for this becuase it has been going on for months, since Q3 2011 on SL4 and it is impacting production projects.

Nick

answered on 07 Mar 2012, 02:23 PM

Hi,

In order to get validation notifications there are different approaches depending on how do you validate your business object.

1. If you are using IDataErrorInfo or INotifyDataErrorInfo - all you have to do is to set "ValidatesOnDataErrors=True" to your binding.

2. If you are using DataAnnotation attributes the story is a little bit different. In general when CellTemplate is used you are by-passing RadGridView's validation logic and in this case nested control (in your case RadNumericUpDown should take care about the validation). I've checked with an ordinary TextBox and there is no validation notifications too (so I believe that there is no problem with RadNumericUpDown control). It is not so easy to achieve validation with nested controls, so my suggestion is to use RadGridView's validation mechanism. RadGridView performs DataAnnotation validation only when editing of the entire row is finished. We will consider adding "in view mode" validation with DataAnnotation attributes, but I cannot commit with any specific date or release.

I've just checked everything with latest internal build (2012.1.306) and everything works as expected.
Let me know if there is something unclear.

All the best,
Nedyalko Nikolov
the Telerik team

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answered on 08 Mar 2012, 10:52 AM

Hi,

Hi Nick,

Could we continue our discussion within our support system? Please open a separate support ticket with more info about your problem (since this forum thread discuss more problems and everything became unclear). It will be very helpful if you can send me a sample project (which works with 2011.Q3 version and does not work with 2012.Q1).
Thank you in advance.

Hi Salie,

I've just checked your sample project with 2012.1.0306 binaries and everything works as expected.

Greetings,
Nedyalko Nikolov
the Telerik team

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