public int? Create(ConnectionString entity)
{
using (SqlCeConnection connection = new SqlCeConnection(ConnectionString))
{
connection.Open();
SqlCeCommand command = new SqlCeCommand("INSERT INTO ConnectionStrings(Type, Name, Connection) VALUES (@Type, @Name, @Connection)", connection);
command.Parameters.AddWithValue("@Type", (int)entity.Type);
command.Parameters.AddWithValue("@Name", entity.Name);
command.Parameters.AddWithValue("@Connection", entity.Connection);
command.ExecuteNonQuery();
SqlCeCommand getId = new SqlCeCommand("SELECT @@IDENTITY AS Id", connection);
object id = getId.ExecuteScalar();
return id == null ? (int?)null : Convert.ToInt32(getId.ExecuteScalar());
}
}
public bool HasDuplicate(ConnectionString entity)
{
using (SqlCeConnection connection = new SqlCeConnection(ConnectionString))
{
connection.Open();
SqlCeCommand command = new SqlCeCommand(
@"SELECT
CASE WHEN EXISTS
(
SELECT 1
FROM ConnectionStrings
WHERE Name = @Name
AND (
@Id IS NULL
OR ID <> @Id
)
)
THEN 1
ELSE 0
END", connection);
SqlCeParameter idParameter = new SqlCeParameter("@Id", System.Data.SqlDbType.Int);
if (entity.ID.HasValue)
idParameter.Value = entity.ID;
else
idParameter.Value = DBNull.Value;
command.Parameters.Add(idParameter);
command.Parameters.AddWithValue("@Name", entity.Name);
return Convert.ToBoolean(command.ExecuteScalar());
}
}
public XmlLoader(ConnectionString conString)
{
if (conString == null || string.IsNullOrWhiteSpace(conString.Connection))
throw new NullReferenceException("Путь к XML-файлу со снимком БД не указан!");
if (!File.Exists(conString.Connection))
throw new FileNotFoundException(string.Format("Файл [{0}] со снимком БД не найден!", conString.Connection));
_conString = conString;
}
public void Update(ConnectionString entity)
{
using (SqlCeConnection connection = new SqlCeConnection(ConnectionString))
{
connection.Open();
SqlCeCommand command = new SqlCeCommand("UPDATE ConnectionStrings SET Type = @Type , Name = @Name , Connection = @Connection WHERE ID = @Id", connection);
command.Parameters.AddWithValue("@Id", entity.ID.Value);
command.Parameters.AddWithValue("@Type", (int)entity.Type);
command.Parameters.AddWithValue("@Name", entity.Name);
command.Parameters.AddWithValue("@Connection", entity.Connection);
command.ExecuteNonQuery();
}
}
//public IDbLoader Loader { get; private set; }
//public IDbSaver Saver { get; private set; }
public DataBase(ConnectionString conString, IDbContext context)
{
ConString = conString;
Context = context;
//Context = Loader.Context;
}
public void AddNewConnectionStringExecute(object o)
{
ConnectionString s = new ConnectionString() { Type = DataLayer.Enums.DataBaseType.SqlServer };
EditString(s);
}
private void EditString(ConnectionString cString)
{
if (EditItem != null)
{
RefreshCollection(EditItem(this, new EditEventArgs() { editString = cString }));
}
}
