gistfile1.cs

using System;
using System.ComponentModel;
using System.Text;

namespace Model
{

    public partial class Boat : IDataErrorInfo
    {
        public override string ToString()
        {
            return BoatName;
        }

        #region IDataErrorInfo Members

        public string Error
        {
            get
            {
                var sb = new StringBuilder();
                if (!string.IsNullOrWhiteSpace(this["BoatName"])) {
                    sb.AppendLine(this["BoatName"]);
                }
                if (!string.IsNullOrWhiteSpace(this["Lenght"])) {
                    sb.AppendLine(this["Lenght"]);
                }
                if (!string.IsNullOrWhiteSpace(this["OwnerId"])) {
                    sb.AppendLine(this["OwnerId"]);
                }
                if (!string.IsNullOrWhiteSpace(this["BoatTypeId"])) {
                    sb.AppendLine(this["BoatTypeId"]);
                }
                if (!string.IsNullOrWhiteSpace(this["CountryId"])) {
                    sb.AppendLine(this["CountryId"]);
                }
                // Check foreach boatEmployee's attributes       
                foreach (var be in BoatEmployees) {
                    if (!string.IsNullOrWhiteSpace(be.Error)) {
                        sb.Append(be.Error);
                    }
                }
                return sb.Length > 0 ? sb.ToString() : String.Empty;
            }
        }
        public string this[string columnName]
        {
            get
            {
                switch (columnName) {
                    case "BoatName":
                        return !string.IsNullOrWhiteSpace(BoatName) ? "Naziv plovila nije unesen!" : String.Empty;
                    case "Lenght":
                        return Length == 0 ? "Duljina plovila nije unesena!" : String.Empty;
                    case "OwnerId":
                        return OwnerId == 0 ? "Vlasnik plovila nije unesen!" : String.Empty;
                    case "BoatTypeId":
                        return BoatTypeId == 0 ? "Tip plovila nije unesen!" : String.Empty;
                    case "CountryId":
                        return CountryId == 0 ? "Drzava registracije plovila nije unesena!" : String.Empty;
                    default:
                        return String.Empty;
                }
            }
        }

        #endregion

    }
}