static void Main(string[] args)
{
var connStr = ConfigurationManager.ConnectionStrings["CustomMapperConnStr"];
using (var conn = new SqlConnection(connStr.ConnectionString))
{
conn.Open();
var unit1 = new Unit { Name = "USD" };
new UnitMapper(conn).Save(unit1);
var unit2 = new Unit { Name = "РУБ", Description = "рубли" };
new UnitMapper(conn).Save(unit2);
var allUnits = new UnitMapper(conn).GetAll();
var unit = new UnitMapper(conn).Get(unit1.Id);
unit.Description = "$";
new UnitMapper(conn).Save(unit);
new UnitMapper(conn).Delete(new Unit {Id = unit2.Id});
var indicator1 = new Indicator {Title = "Ind1"};
new IndicatorMapper(conn).Save(indicator1);
var indicator2 = new Indicator { Title = "Ind2", UnitId = unit1.Id};
new IndicatorMapper(conn).Save(indicator2);
try
{
var indicator3 = new Indicator { Title = "Ind3", UnitId = 1000 };
new IndicatorMapper(conn).Save(indicator3);
}
catch (Exception)
{
//
}
var allIndicators = new IndicatorMapper(conn).GetAll();
var i1 = new IndicatorMapper(conn).Get(indicator1.Id);
try
{
new UnitMapper(conn).Delete(unit1);
}
catch (Exception)
{
}
new IndicatorMapper(conn).Delete(indicator2);
new UnitMapper(conn).Delete(unit1);
conn.Close();
}
}
public void Save(Unit unit)
{
if (unit.Id > 0)
{
Update(unit);
}
else
{
Insert(unit);
}
}
static void Main(string[] args)
{
var connStr = ConfigurationManager.ConnectionStrings["CustomMapperConnStr"];
using (var conn = new SqlConnection(connStr.ConnectionString))
{
conn.Open();
var unit1 = new Unit { Name = "USD" };
new UnitMapper(conn).Save(unit1);
var unit2 = new Unit { Name = "РУБ", Description = "рубли" };
new UnitMapper(conn).Save(unit2);
var allUnits = new UnitMapper(conn).GetAll();
var unit1_1 = new UnitMapper(conn).Get(unit1.Id);
var unit1_2 = new UnitMapper(conn).Get(unit1.Id);
unit1_1.Description = "$";
new UnitMapper(conn).Save(unit1_1);
try
{
unit1_2.Description = "$";
new UnitMapper(conn).Save(unit1_2);
}
catch (Exception ex)
{
//
}
new UnitMapper(conn).Delete(unit1_1);
try
{
new UnitMapper(conn).Delete(new Unit {Id = unit1_2.Id, TimeStamp = unit1_2.TimeStamp});
}
catch (Exception ex)
{
//
}
conn.Close();
}
}
private void Insert(Unit unit)
{
using (var cmd = _connection.CreateCommand())
{
cmd.CommandText = "insert into Units (Name, Description) values (@Name, @Description);select Id, TimeStamp FROM Units WHERE @@ROWCOUNT > 0 AND Id = scope_identity()";
addDataParams(unit, cmd);
using (var reader = cmd.ExecuteReader())
{
if (!reader.Read())
{
throw new Exception("Insert error");
}
unit.Id = reader.GetInt32(0);
unit.TimeStamp = (byte[])reader["Timestamp"];
reader.Close();
}
}
}
private void Update(Unit unit)
{
using (var cmd = _connection.CreateCommand())
{
cmd.CommandText = "update Units set Name = @Name, Description = @Description where Id = @Id and TimeStamp = @TimeStamp;select TimeStamp FROM Units WHERE @@ROWCOUNT > 0 AND Id = @Id";
addPKParam(unit.Id, cmd);
addDataParams(unit, cmd);
addTimeStampParam(unit.TimeStamp, cmd);
using (var reader = cmd.ExecuteReader())
{
if (!reader.Read())
{
throw new Exception("Update error");
}
unit.TimeStamp = (byte[])reader["Timestamp"];
reader.Close();
}
}
}
private static Unit getDataFromReader(SqlDataReader reader)
{
var u = new Unit();
u.Id = reader.GetInt32(0);
u.Name = (string)reader["Name"];
u.Description = reader.IsDBNull(2) ? null : reader.GetString(2);
u.TimeStamp = (byte[])reader["TimeStamp"];
return u;
}
private static void addDataParams(Unit unit, SqlCommand cmd)
{
cmd.Parameters.AddWithValue("@Name", unit.Name);
cmd.Parameters.AddWithValue("@Description", string.IsNullOrEmpty(unit.Description) ? DBNull.Value : (object)unit.Description);
}
public void Delete(Unit unit)
{
using (var cmd = _connection.CreateCommand())
{
cmd.CommandText = "delete from Units where Id = @Id and TimeStamp = @Timestamp";
addPKParam(unit.Id, cmd);
addTimeStampParam(unit.TimeStamp, cmd);
if (cmd.ExecuteNonQuery() != 1)
{
throw new Exception("Object not found");
}
}
}
