Custom Validation example for Telerik ASP.NET Core Grid

[Mark]

Hi,

 

The Telerik ASP.NET Core Grid custom validation example (https://demos.telerik.com/aspnet-core/grid/editing-custom-validation) defines a custom validation rule via the CustomValidationProductViewModel model and the productnamevalidation function.

However, the CustomValidationProductViewModel is not visible on the page. Could you please make the model available?

Kind regards

[Viktor Tachev]

Hello Mark,

Thank you for the feedback. 

Below you can see the definition of the model for the custom validation example.

using System.ComponentModel.DataAnnotations;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using Microsoft.AspNetCore.Mvc.ModelBinding.Validation;

namespace Kendo.Mvc.Examples.Models
{
    public class CustomValidationProductViewModel
    {
        public int ProductID { get; set; }

        [Required]
        [CustomProductNameValidation(ErrorMessage = "ProductName should start with capital letter")]
        public string ProductName { get; set; }

        [DataType(DataType.Currency)]
        public decimal UnitPrice { get; set; }
    }

    public class CustomProductNameValidationAttribute : ValidationAttribute  //, IClientModelValidator
    {
        public override bool IsValid(object value)
        {
            var productName = (string)value;
            if (!string.IsNullOrEmpty(productName))
            {
                return Regex.IsMatch(productName, "^[A-Z]");
            }
            return true;
        }

    }
}

With that said, if you would like to try the demos locally you can download the archive containing the examples. The demos are located in the \wrappers\aspnetcore\Examples\ subfolder.

Regards,
Viktor Tachev
Progress Telerik