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Курнат Андрей
239
XLAB2/TipsEditWindowViewModel.cs
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239
XLAB2/TipsEditWindowViewModel.cs
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Windows.Input;
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namespace XLAB2
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{
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internal sealed class TipsEditWindowViewModel : ObservableObject
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{
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private readonly IReadOnlyList<TipsDirectoryItem> _existingItems;
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private int _categoryId;
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private int _designId;
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private int _instrumentNameId;
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private bool? _isMkPrimaryOnly;
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private bool? _isSpecialPurpose;
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private int _measurementAreaId;
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private string _metrControlCode;
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private string _notes;
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private string _registryPeriodMonthsText;
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private string _registryTypeNumber;
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private string _serviceLifeYearsText;
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private string _typeName;
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private string _validationMessage;
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private string _vniimsTypeCodeText;
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public TipsEditWindowViewModel(TipsDirectoryItem seed, bool isNew, IReadOnlyList<TipsDirectoryItem> existingItems, TypeSizeDirectoryService service)
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{
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var source = seed ?? new TipsDirectoryItem();
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_existingItems = existingItems ?? Array.Empty<TipsDirectoryItem>();
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Id = source.Id;
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IsNew = isNew;
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MeasurementAreas = service.LoadSpoiReferences();
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InstrumentNames = service.LoadSpnmtpReferences();
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Categories = WithEmpty(service.LoadSpktReferences());
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Designs = WithEmpty(service.LoadSpkiReferences());
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MeasurementAreaId = source.MeasurementAreaId;
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InstrumentNameId = source.InstrumentNameId;
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CategoryId = source.CategoryId ?? 0;
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DesignId = source.DesignId ?? 0;
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TypeName = source.TypeName ?? string.Empty;
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ServiceLifeYearsText = source.ServiceLifeYears.HasValue ? source.ServiceLifeYears.Value.ToString() : string.Empty;
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RegistryPeriodMonthsText = source.RegistryPeriodMonths.HasValue ? source.RegistryPeriodMonths.Value.ToString() : string.Empty;
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RegistryTypeNumber = source.RegistryTypeNumber ?? string.Empty;
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VniimsTypeCodeText = source.VniimsTypeCode.HasValue ? source.VniimsTypeCode.Value.ToString() : string.Empty;
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MetrControlCode = source.MetrControlCode ?? string.Empty;
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Notes = source.Notes ?? string.Empty;
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IsSpecialPurpose = source.IsSpecialPurpose;
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IsMkPrimaryOnly = source.IsMkPrimaryOnly;
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ConfirmCommand = new RelayCommand(Confirm);
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CancelCommand = new RelayCommand(Cancel);
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}
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public event EventHandler<bool?> CloseRequested;
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public ICommand CancelCommand { get; private set; }
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public IReadOnlyList<DirectoryLookupItem> Categories { get; private set; }
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public ICommand ConfirmCommand { get; private set; }
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public IReadOnlyList<DirectoryLookupItem> Designs { get; private set; }
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public int Id { get; private set; }
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public IReadOnlyList<DirectoryLookupItem> InstrumentNames { get; private set; }
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public bool IsNew { get; private set; }
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public IReadOnlyList<DirectoryLookupItem> MeasurementAreas { get; private set; }
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public int MeasurementAreaId { get { return _measurementAreaId; } set { SetProperty(ref _measurementAreaId, value); } }
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public int InstrumentNameId { get { return _instrumentNameId; } set { SetProperty(ref _instrumentNameId, value); } }
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public int CategoryId { get { return _categoryId; } set { SetProperty(ref _categoryId, value); } }
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public int DesignId { get { return _designId; } set { SetProperty(ref _designId, value); } }
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public string TypeName { get { return _typeName; } set { SetProperty(ref _typeName, value); } }
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public string ServiceLifeYearsText { get { return _serviceLifeYearsText; } set { SetProperty(ref _serviceLifeYearsText, value); } }
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public string RegistryPeriodMonthsText { get { return _registryPeriodMonthsText; } set { SetProperty(ref _registryPeriodMonthsText, value); } }
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public string RegistryTypeNumber { get { return _registryTypeNumber; } set { SetProperty(ref _registryTypeNumber, value); } }
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public string VniimsTypeCodeText { get { return _vniimsTypeCodeText; } set { SetProperty(ref _vniimsTypeCodeText, value); } }
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public string MetrControlCode { get { return _metrControlCode; } set { SetProperty(ref _metrControlCode, value); } }
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public string Notes { get { return _notes; } set { SetProperty(ref _notes, value); } }
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public bool? IsSpecialPurpose { get { return _isSpecialPurpose; } set { SetProperty(ref _isSpecialPurpose, value); } }
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public bool? IsMkPrimaryOnly { get { return _isMkPrimaryOnly; } set { SetProperty(ref _isMkPrimaryOnly, value); } }
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public string Title
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{
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get { return IsNew ? "Новый тип СИ" : "Редактирование типа СИ"; }
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}
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public string ValidationMessage
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{
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get { return _validationMessage; }
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private set { SetProperty(ref _validationMessage, value); }
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}
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public TipsDirectoryItem ToResult()
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{
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return new TipsDirectoryItem
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{
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Id = Id,
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MeasurementAreaId = MeasurementAreaId,
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InstrumentNameId = InstrumentNameId,
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CategoryId = CategoryId > 0 ? (int?)CategoryId : null,
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DesignId = DesignId > 0 ? (int?)DesignId : null,
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TypeName = Normalize(TypeName),
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ServiceLifeYears = ParseNullableInt(ServiceLifeYearsText),
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RegistryPeriodMonths = ParseNullableInt(RegistryPeriodMonthsText),
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RegistryTypeNumber = Normalize(RegistryTypeNumber),
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VniimsTypeCode = ParseNullableInt(VniimsTypeCodeText),
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MetrControlCode = Normalize(MetrControlCode),
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Notes = Normalize(Notes),
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IsSpecialPurpose = IsSpecialPurpose,
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IsMkPrimaryOnly = IsMkPrimaryOnly
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};
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}
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private void Cancel(object parameter)
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{
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RaiseCloseRequested(false);
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}
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private void Confirm(object parameter)
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{
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if (MeasurementAreaId <= 0)
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{
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ValidationMessage = "Укажите область измерений.";
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return;
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}
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if (InstrumentNameId <= 0)
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{
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ValidationMessage = "Укажите наименование типа СИ.";
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return;
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}
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var normalizedTypeName = Normalize(TypeName);
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if (string.IsNullOrWhiteSpace(normalizedTypeName))
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{
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ValidationMessage = "Укажите тип СИ.";
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return;
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}
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if (normalizedTypeName.Length > TipsDirectoryRules.TypeNameMaxLength)
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{
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ValidationMessage = string.Format("Тип СИ не должен превышать {0} символов.", TipsDirectoryRules.TypeNameMaxLength);
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return;
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}
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int? parsedValue;
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if (!TryParseNullableInt(ServiceLifeYearsText, out parsedValue))
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{
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ValidationMessage = "Срок службы должен быть целым числом.";
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return;
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}
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if (!TryParseNullableInt(RegistryPeriodMonthsText, out parsedValue))
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{
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ValidationMessage = "МПИ по Госреестру должен быть целым числом.";
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return;
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}
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if (!TryParseNullableInt(VniimsTypeCodeText, out parsedValue))
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{
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ValidationMessage = "Код ВНИИМС должен быть целым числом.";
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return;
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}
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var normalizedRegistryNumber = Normalize(RegistryTypeNumber);
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if (!string.IsNullOrWhiteSpace(normalizedRegistryNumber) && normalizedRegistryNumber.Length > TipsDirectoryRules.RegistryTypeNumberMaxLength)
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{
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ValidationMessage = string.Format("Номер по Госреестру не должен превышать {0} символов.", TipsDirectoryRules.RegistryTypeNumberMaxLength);
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return;
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}
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var normalizedMetrControlCode = Normalize(MetrControlCode);
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if (!string.IsNullOrWhiteSpace(normalizedMetrControlCode) && normalizedMetrControlCode.Length > TipsDirectoryRules.MetrControlCodeMaxLength)
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{
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ValidationMessage = string.Format("Код АИС \"Метрконтроль\" не должен превышать {0} символов.", TipsDirectoryRules.MetrControlCodeMaxLength);
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return;
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}
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var duplicate = _existingItems.FirstOrDefault(delegate(TipsDirectoryItem item)
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{
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return item != null
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&& item.Id != Id
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&& item.InstrumentNameId == InstrumentNameId
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&& string.Equals(Normalize(item.TypeName), normalizedTypeName, StringComparison.OrdinalIgnoreCase);
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});
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if (duplicate != null)
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{
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ValidationMessage = string.Format("Тип СИ \"{0}\" уже существует для выбранного наименования типа СИ.", normalizedTypeName);
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return;
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}
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ValidationMessage = string.Empty;
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RaiseCloseRequested(true);
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}
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private static IReadOnlyList<DirectoryLookupItem> WithEmpty(IReadOnlyList<DirectoryLookupItem> source)
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{
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return new[] { new DirectoryLookupItem { Id = 0, Name = string.Empty } }.Concat(source ?? Array.Empty<DirectoryLookupItem>()).ToList();
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}
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private static string Normalize(string value)
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{
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return string.IsNullOrWhiteSpace(value) ? string.Empty : value.Trim();
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}
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private static int? ParseNullableInt(string value)
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{
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int? parsedValue;
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return TryParseNullableInt(value, out parsedValue) ? parsedValue : (int?)null;
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}
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private static bool TryParseNullableInt(string value, out int? result)
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{
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if (string.IsNullOrWhiteSpace(value))
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{
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result = null;
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return true;
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}
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int parsed;
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if (int.TryParse(value.Trim(), out parsed))
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{
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result = parsed;
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return true;
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}
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result = null;
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return false;
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}
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private void RaiseCloseRequested(bool? dialogResult)
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{
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var handler = CloseRequested;
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if (handler != null)
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{
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handler(this, dialogResult);
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}
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}
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}
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}
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