Hello. I have a problem using the data validation mechanism in DevExtreme 18.2.4. (MVC Core 2.2.0, Chrome Version 71.0.3578.98 (Official Build) (64-bit))
I used the ModelState mechanism to show error on the client side. It worked with the TextBox control, but it did not work for the DateBox, ValidationSummary control.
I understand that this is a client-side control, but is possible to display the error that was generated on the server side, for example using the ModelState mechanism?
Hi,
You can implement the server-side validation using the "custom" validation rule. Just set the validationCallback function as described in the Server-Side Validation documentation topic. Please review the above links and let me know your results.
Updated
Our editors should display ModelState errors out of the box. I researched this behavior and found that the following configuration doesn't work:
JavaScriptjQuery(function($){$("#devextreme1").dxDateBox({"name":"DateField","value":null,"inputAttr":{"id":"DateField"},"isValid":false,"validationError":{"message":"Error in field DateField"}});});
The issue occurs at the DateBox level and is not connected with MVC specifics. So I've created a separate report on your behalf:
DateBox doesn't display an error frame if isValid and validationError are defined on the first load
As for dxValidationSummary, currently, this component doesn't allow displaying errors that come from ModelState and displays only errors that occur on the client side.
I understand.
Can you check why in this example in the attachment dxTest.zip, the validation with the ModelState object works for the TextBox control, and does not work for the DateBox control, ValidationSummary?
Just wanted to drop you a note to let you know that we need a bit more time to finish working on our answer to your inquiry. Thanks so much for your patience.
Hi Pawel,
Our editors should display ModelState errors out of the box. I researched this behavior and found that the following configuration doesn't work:
JavaScriptjQuery(function($){$("#devextreme1").dxDateBox({"name":"DateField","value":null,"inputAttr":{"id":"DateField"},"isValid":false,"validationError":{"message":"Error in field DateField"}});});
The issue occurs at the DateBox level and is not connected with MVC specifics. So I've created a separate report on your behalf:
DateBox doesn't display an error frame if isValid and validationError are defined on the first load
As for dxValidationSummary, currently, this component doesn't allow displaying errors that come from ModelState and displays only errors that occur on the client side.
There is no API to manually add these errors either.
Let us know if you have additional questions.
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