Tango - Twine softwares

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.TFS;

namespace Tango.MachineStudio.UI.TFS
{
    public class WorkItemValidationAttribute : ValidationAttribute
    {
        public override bool IsValid(object value)
        {
            WorkItem item = value as WorkItem;

            if (String.IsNullOrWhiteSpace(item.Title))
            {
                ErrorMessage = "Title is required.";
                return false;
            }

            if (item.AssignedTo == null)
            {
                ErrorMessage = "Assigned To field is required.";
                return false;
            }

            if (String.IsNullOrWhiteSpace(item.StepsToReproduce))
            {
                ErrorMessage = "Please enter steps to reproduce.";
                return false;
            }

            return true;
        }
    }
}