public virtual async Task <bool> DeleteClientAsync()
{
var shouldDelete = await this._dialogService.ShowDialogYesNo(Resources.Dialog_Title_Attention,
Resources.Dialog_Question_DeleteClient);
if (!shouldDelete)
{
return(false);
}
try
{
CityToPostalCode oldCityToPostalCode = this._currentClient.CityToPostalCode;
this._repository.Delete(this._currentClient);
this.DeletePostalCodeIfNecessary(oldCityToPostalCode);
this.SendRemoveClientMessage();
return(true);
}
catch (Exception e)
{
await this._dialogService.ShowMessage(Resources.Dialog_Title_CanNotDeleteClient, e.Message);
return(false);
}
}
private static bool AreEqualCityToPostalCodes(CityToPostalCode cityToPostalCode1, CityToPostalCode cityToPostalCode2)
{
if (cityToPostalCode1.PostalCode == cityToPostalCode2.PostalCode &&
cityToPostalCode1.City == cityToPostalCode2.City)
{
return(true);
}
return(false);
}
/// <summary>
/// Deletes the previous postal code - city combination when no other client possesses it.
/// </summary>
/// <exception cref="Exception">Thrown when no database connection or postal code could not be deleted.</exception>
private void DeletePostalCodeIfNecessary(CityToPostalCode cityToPostalCode)
{
if (cityToPostalCode == null || string.IsNullOrEmpty(cityToPostalCode.PostalCode))
{
return;
}
Conjunction conjunction = Restrictions.Conjunction();
conjunction.Add(Restrictions.Where <Client>(c => c.CityToPostalCode.PostalCode == cityToPostalCode.PostalCode));
int references = this._repository.GetQuantityByCriteria <Client>(conjunction);
if (references == 0)
{
this._repository.Delete(cityToPostalCode);
}
}
private void FillCity()
{
CityToPostalCode cityToPostalCode = null;
try
{
cityToPostalCode = this._repository
.GetByCriteria <CityToPostalCode>(Restrictions.Where <CityToPostalCode>(x => x.PostalCode == this.PostalCode), 1)
.FirstOrDefault();
}
catch
{
// do nothing
}
if (cityToPostalCode != null)
{
this.City = cityToPostalCode.City;
}
}
