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MetadataType support

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Randy Hompesch
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Randy Hompesch asked on 03 Dec 2016, 12:16 PM

 

For the life of me I can't see what's wrong. I have a radgriview and I edit rowdetails with the raddataform. everything works great except the validation.
I am using the code below metadatatype (as an example) to add validation attributes to a class generated by EF. Obviously, this class is what I have bound to the dataform. I've stripped it to the bare min for this discussion.

The commented out code below shows a "buddy" class that I have implemented as a test to make sure the annotations are working. They are. If I have to create buddy classes and copy data for each returned record from a database query I will, but it seems rather a pain.

Any insight would be greatly appreciated. I read somewhere that this metadata thing is not support by you. Is this true? If so, what is the recommended way of getting the job done?

Thanks ... Ed

 

 

 

    [MetadataType(typeof(CALMS_SamplesMetaData))]
    public partial class CALMS_Samples: ValidatableBindableBase
    {
    }
    public class CALMS_SamplesMetaData : ValidatableBindableBase
    {
        private string _clientSampleID;
        [Required(ErrorMessage = "Required.")]
        [MaxLength(50, ErrorMessage = "Exceeded 50 characters")]
        public string ClientSampleID
        {
            get { return _clientSampleID; }
            set { SetProperty(ref _clientSampleID, value); }
        }
}
 
    //public partial class CALMS_Samples : ValidatableBindableBase
    //{
    //    private string __test1;
    //    [Required(ErrorMessage = "Required.")]
    //    public string test1
    //    {
    //        get { return __test1; }
    //        set { SetProperty(ref _cli_test1entSampleID, value); }
    //    }
    //}

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Randy Hompesch
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answered on 03 Dec 2016, 12:18 PM

here's a link to the post about it not being supported.

http://www.telerik.com/forums/metadatatype-support

1
Stefan
Telerik team
answered on 07 Dec 2016, 09:22 AM
Hello Randy,

Thank you for your feedback.

Indeed, validating through MetadataType attributes is currently not supported by RadDataForm. I am now raising the priority of the item, so I believe it will be included in our development plan.

Best Regards,
Stefan X1
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Randy Hompesch
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answered on 07 Dec 2016, 10:27 AM

Yeah it sure seems like this is something that should be supported.

In the meantime, what is the recommended way to get the job done?

Thanks ... Ed

 

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Stefan
Telerik team
answered on 08 Dec 2016, 02:31 PM
Hello Ed,

The logic of RadDataForm for validating through attributes relies solely on the built-in Validator provided by the framework. So, I am afraid, that I cannot provide an alternative solution or a workaround through the API of the control. For the time being, the recommended approach is to apply the validation attributes directly, as documented in the Item level attribute-based validation topic.

Best Regards,
Stefan X1
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Stefan
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