Grid Popup Edit Mode and Validation Summary

[Monah Abou Hattoum]

Hi,
i am experienced a strange problem with the Grid and Validation Summary
here the scenario:
1- i have a Grid to display the car details
2- user can edit the details in Popup mode
3- i want to display the validation errors in Validation Summary and not Validation Message
4- i am using IValidatableObject to validate the user inputs and CustomValidation
problem:
1- if i made the built in attribute validation, then the validation summary displays the errors correctly
2- if i made custom validation, validation summary fails to display  but surround the field by red ref: (ViewModels.CustomValidator for car type field)
3- if errors return by the Validate function, validation summary fails to display ref: (ViewModels.Car for country field)
problem facing:
1- try to set the country on edit to N/A and click update, nothing will be displayed however ModelState.IsValid is false
2- try to set the car type on edit to N/A and click update, the field will be red but no displayed message in the validation summary
3- try to clear the Name field and click update, the field will be red and validation summary will be displayed correctly

I am not able to figure out why validation summary not displaying in all cases, and how to fix this please?

thanks in advance

[Monah Abou Hattoum]

please any tip or help?

[Nikolay Rusev]

Hello Monah Abou Hattoum,

You need to return the member name of the field which validation fails. I.e:

public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
{
  // here i am trying to validate Country not using the custom validator
  if (Country == "N/A")
    yield return new ValidationResult("Country filed is required!", new[] { "Country" });
}

Showing server validation errors in validation summary should be handled manually by handling OnError grid client event.

Greetings,
Nikolay Rusev
the Telerik team

[Monah Abou Hattoum]

Greetings,
thanks for the reply,
i wanted to know how to use the validaiton summary in this situation.
i solved this issue by adding ValidationMessageFor at the top of the custom editor and it worked for me
thanks for the tip regarding the ivalidatableobject

best regards

[Nikolay Rusev]

Hello Monah Abou Hattoum,

Client representation of the validation summary looks as follow:

<div data-valmsg-summary="true" class="validation-summary-valid">
 <ul>
  <li style="display:none"></li>
 </ul>
</div>

You will have to manually insert li elements for error handled on grid OnError.

Greetings,
Nikolay Rusev
the Telerik team

[Venkata]

HI Nikolay ,

Even I am facing the problem of writing into Validation div List . Could you please give a sample code ?

so that it will be helpful to us.

Thanks and Regards,
Venkat

[Monah Abou Hattoum]

Greetings,
if you want a fast solution, based on the attachement i added early in the question
please follow these steps
1- at the top of the car partial view add these

 

@Html.ValidationMessage("Country")

@Html.ValidationMessage("Name")

@Html.ValidationMessage("Model")

@Html.ValidationMessage("Weight")

@Html.ValidationMessage("Type")

and no need to use the validation summary

2- in the ViewModels->Car.cs
add the missing part in the return statement as "Nikolay Rusev" said in his reply

regards,