//DeleteOB
public bool _DeleteOb(Ob_DM_ChietKhau ob, SqlConnection conn)
{
if (conn.ConnectionString == "")
{
return(false);
}
conn.Open();
SqlCommand command = new SqlCommand
{
Connection = conn,
CommandType = CommandType.Text,
CommandText = @"Delete From DM_ChietKhau Where ID_ChietKhau=@ID_ChietKhau"
};
command.Parameters.Add(new SqlParameter("ID_ChietKhau", ob.ID_CHIETKHAU));
try
{
command.ExecuteNonQuery();
}
catch (Exception exception)
{
MessageBox.Show("Không thể xóa dữ liệu. \r\n" + exception.Message, "Thông báo", MessageBoxButtons.OK, MessageBoxIcon.Error);
command.Dispose();
command = null;
conn.Close();
return(false);
}
command.Dispose();
command = null;
conn.Close();
return(true);
}
//UpdateOb ob
public bool _UpdateOb(Ob_DM_ChietKhau ob, SqlConnection conn)
{
if (conn.ConnectionString == "")
{
return(false);
}
conn.Open();
SqlCommand command = new SqlCommand {
Connection = conn,
CommandType = CommandType.Text,
CommandText = @"Update DM_ChietKhau Set MaChietKhau=@MaChietKhau, TenChietKhau=@TenChietKhau Where ID_ChietKhau=@ID_ChietKhau"
};
command.Parameters.Add("ID_ChietKhau", SqlDbType.Int).Value = ob.ID_CHIETKHAU;
if (ob.MACHIETKHAU.Trim() == "")
{
command.Parameters.Add("MaChietKhau", SqlDbType.VarChar).Value = DBNull.Value;
}
else
{
command.Parameters.Add("MaChietKhau", SqlDbType.VarChar).Value = ob.MACHIETKHAU;
}
if (ob.TENCHIETKHAU.Trim() == "")
{
command.Parameters.Add("TenChietKhau", SqlDbType.NVarChar).Value = DBNull.Value;
}
else
{
command.Parameters.Add("TenChietKhau", SqlDbType.NVarChar).Value = ob.TENCHIETKHAU;
}
try
{
command.ExecuteNonQuery();
}
catch (Exception exception)
{
MessageBox.Show("Không thể cập nhật dữ liệu. \r\n" + exception.Message, "Thông báo", MessageBoxButtons.OK, MessageBoxIcon.Error);
command.Dispose();
command = null;
conn.Close();
return(false);
}
if (command.ExecuteNonQuery() == 0)
{
MessageBox.Show("Không thể cập nhật dữ liệu. \r\n", "Thông báo", MessageBoxButtons.OK, MessageBoxIcon.Error);
command.Dispose();
command = null;
conn.Close();
return(false);
}
command.Dispose();
command = null;
conn.Close();
return(true);
}
//GetObWhere
public Ob_DM_ChietKhau _GetObWhere(string keyword, SqlConnection conn)
{
if (conn.ConnectionString == "")
{
return(null);
}
conn.Open();
Ob_DM_ChietKhau ob = new Ob_DM_ChietKhau();
SqlCommand command = new SqlCommand
{
Connection = conn,
CommandType = CommandType.Text,
CommandText = @"Select ID_ChietKhau, MaChietKhau, TenChietKhau From DM_ChietKhau Where " + keyword + ""
};
SqlDataReader reader = command.ExecuteReader();
int num = 0;
while (reader.Read())
{
num++;
if (reader[0] != DBNull.Value)
{
ob.ID_CHIETKHAU = Convert.ToInt32(reader[0]);
}
if (reader[1] != DBNull.Value)
{
ob.MACHIETKHAU = Convert.ToString(reader[1]);
}
if (reader[2] != DBNull.Value)
{
ob.TENCHIETKHAU = Convert.ToString(reader[2]);
}
}
if (num == 0)
{
command.Dispose();
command = null;
reader.Dispose();
reader = null;
conn.Close();
return(null);
}
command.Dispose();
command = null;
reader.Dispose();
reader = null;
conn.Close();
return(ob);
}
//InsertobGetId
public int _InsertObGetId(Ob_DM_ChietKhau ob, SqlConnection conn)
{
int num = 0;
if (conn.ConnectionString != "")
{
conn.Open();
SqlCommand command = new SqlCommand
{
Connection = conn,
CommandType = CommandType.Text,
CommandText = @"Insert Into DM_ChietKhau (MaChietKhau, TenChietKhau) Values(@MaChietKhau, @TenChietKhau)Select @@IDENTITY"
};
if (ob.MACHIETKHAU.Trim() == "")
{
command.Parameters.Add("MaChietKhau", SqlDbType.VarChar).Value = DBNull.Value;
}
else
{
command.Parameters.Add("MaChietKhau", SqlDbType.VarChar).Value = ob.MACHIETKHAU;
}
if (ob.TENCHIETKHAU.Trim() == "")
{
command.Parameters.Add("TenChietKhau", SqlDbType.NVarChar).Value = DBNull.Value;
}
else
{
command.Parameters.Add("TenChietKhau", SqlDbType.NVarChar).Value = ob.TENCHIETKHAU;
}
try
{
num = Convert.ToInt32(command.ExecuteScalar());
}
catch (Exception exception)
{
MessageBox.Show("Không thể thêm dữ liệu. \r\n" + exception.Message, "Thông báo", MessageBoxButtons.OK, MessageBoxIcon.Error);
command.Dispose();
command = null;
conn.Close();
return(num);
}
command.Dispose();
command = null;
conn.Close();
}
return(num);
}
//ListWhere_sp
public List <Ob_DM_ChietKhau> _ListWhere_sp(string StoredName, SqlParameter[] ArrayParameter, SqlConnection conn)
{
if (conn.ConnectionString == "")
{
return(null);
}
conn.Open();
List <Ob_DM_ChietKhau> list = new List <Ob_DM_ChietKhau>();
SqlCommand command = new SqlCommand
{
Connection = conn,
CommandType = CommandType.Text,
CommandText = StoredName
};
command.Parameters.AddRange(ArrayParameter);
SqlDataReader reader = command.ExecuteReader();
while (reader.Read())
{
Ob_DM_ChietKhau ob = new Ob_DM_ChietKhau();
if (reader[0] != DBNull.Value)
{
ob.ID_CHIETKHAU = Convert.ToInt32(reader[0]);
}
if (reader[1] != DBNull.Value)
{
ob.MACHIETKHAU = Convert.ToString(reader[1]);
}
if (reader[2] != DBNull.Value)
{
ob.TENCHIETKHAU = Convert.ToString(reader[2]);
}
list.Add(ob);
}
command.Dispose();
command = null;
reader.Dispose();
reader = null;
conn.Close();
return(list);
}
//ListAll
public List <Ob_DM_ChietKhau> _ListAll(SqlConnection conn)
{
if (conn.ConnectionString == "")
{
return(null);
}
conn.Open();
List <Ob_DM_ChietKhau> list = new List <Ob_DM_ChietKhau>();
SqlCommand command = new SqlCommand
{
Connection = conn,
CommandType = CommandType.Text,
CommandText = @"Select ID_ChietKhau, MaChietKhau, TenChietKhau From DM_ChietKhau"
};
SqlDataReader reader = command.ExecuteReader();
while (reader.Read())
{
Ob_DM_ChietKhau ob = new Ob_DM_ChietKhau();
if (reader[0] != DBNull.Value)
{
ob.ID_CHIETKHAU = Convert.ToInt32(reader[0]);
}
if (reader[1] != DBNull.Value)
{
ob.MACHIETKHAU = Convert.ToString(reader[1]);
}
if (reader[2] != DBNull.Value)
{
ob.TENCHIETKHAU = Convert.ToString(reader[2]);
}
list.Add(ob);
}
command.Dispose();
command = null;
reader.Dispose();
reader = null;
conn.Close();
return(list);
}
public Ob_DM_ChietKhau(Ob_DM_ChietKhau newOb)
{
id_chietkhau = newOb.ID_CHIETKHAU;
machietkhau = newOb.MACHIETKHAU;
tenchietkhau = newOb.TENCHIETKHAU;
}
