public void take(KnygosDataSet1 dataSet, int n, int ID)
{
DateTime Data = DateTime.Today;
Data = Data.AddMonths(1);
dataSet.Table[n].Zmogus = ID;
dataSet.Table[n][4] = Data;
}
public void add(KnygosDataSet1 dataSet, String autorius, String pavadinimas)
{
int id = generateId(dataSet);
DataRow anyRow = dataSet.Table.NewRow();
anyRow[0] = id;
anyRow[1] = autorius;
anyRow[2] = pavadinimas;
anyRow[3] = 0;
dataSet.Table.Rows.Add(anyRow);
}
public void delete(KnygosDataSet1 dataSet, int n)
{
//dataSet.Table.Rows.Remove(dataSet.Table[n]);
using (LibraryDataEntities2 dataEntities = new LibraryDataEntities2())
{
Knygo knygo = (from c in dataEntities.Knygos
where c.Id == n
select c).FirstOrDefault();
dataEntities.Knygos.Remove(knygo);
dataEntities.SaveChanges();
}
}
public void extend(KnygosDataSet1 dataSet, int n)
{
DateTime grazinimoData = (DateTime)dataSet.Table[n][4];
if (dataSet.Table[n][4] == DBNull.Value)
{
throw new Exception("Knyga niekam nepriklauso");
}
else if (baudosDydis(grazinimoData) > 0)
{
throw new Exception("Negalima pratesti grazinimo datos. Bauda jau pradeta skaiciuoti.");
}
else
{
grazinimoData = grazinimoData.AddMonths(1);
dataSet.Table[n][4] = grazinimoData;
}
}
private int generateId(KnygosDataSet1 knygosDataSet1)
{
int i;
int id = 1000;
for (i = 0; i < knygosDataSet1.Table.Count; i++)
{
if ((int)knygosDataSet1.Table[i][0] == id)
{
id++;
}
else
{
return(id);
}
}
return(id);
}
public void remove(KnygosDataSet1 dataSet, int n)
{
dataSet.Table[n].Zmogus = 0;
dataSet.Table[n][4] = DBNull.Value;
}
public void delete(KnygosDataSet1 dataSet, int n)
{
dataSet.Table.Rows.Remove(dataSet.Table[n]);
}
