public override bool Execute()
{
if (!Verifier.CheckAmmountElements(AmountElements))
{
Information = StringSource.AmmountElementsStructureError();
return(false);
}
Clear();
return(true);
}
public override bool Execute()
{
if (!Verifier.CheckName(LastName))
{
Information = StringSource.NameStructureError();
return(false);
}
if (!Verifier.CheckAmmountElements(AmmountElements))
{
Information = StringSource.AmmountElementsStructureError();
return(false);
}
Clear();
int id = 0;
using (var localrepos = new DAL.Repositories()) {
if (IsNext)
{
if (LastElement == null)
{
id = 0;
}
else
{
id = LastElement.CustomerID;
}
Client = localrepos.Customers.GetAll(el => el.LastName == LastName && el.CustomerID > id);
CurrentList = Client.Take(AmmountElements).ToList();
}
else
{
if (FirstElement == null)
{
id = int.MaxValue;
}
else
{
id = FirstElement.CustomerID;
}
Client = localrepos.Customers.GetAll().OrderByDescending(el => el.CustomerID).
Where(el => el.LastName == LastName && el.CustomerID < id);
CurrentList = Client.Take(AmmountElements).OrderBy(el => el.CustomerID).ToList();
}
}
if (CurrentList != null && CurrentList.Count > 0)
{
FirstElement = CurrentList.First();
LastElement = CurrentList.Last();
}
else
{
FirstElement = null;
LastElement = null;
Information = StringSource.EndList();
return(false);
}
foreach (var el in CurrentList)
{
ClientsInformation.Add(StringSource.ClientInformation(el));
IdsClients.Add(el.CustomerID);
}
Information = StringSource.Successfully();
return(true);
}