//DeleteOB
public bool _DeleteOb(Ob_DM_DuLieu ob, SqlConnection conn)
{
if (conn.ConnectionString == "")
{
return(false);
}
conn.Open();
SqlCommand command = new SqlCommand
{
Connection = conn,
CommandType = CommandType.Text,
CommandText = @"Delete From DM_DuLieu Where ID_DuLieu=@ID_DuLieu"
};
command.Parameters.Add(new SqlParameter("ID_DuLieu", ob.ID_DULIEU));
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);
}
public Ob_DM_DuLieu(Ob_DM_DuLieu newOb)
{
id_dulieu = newOb.ID_DULIEU;
tenbang = newOb.TENBANG;
tencot = newOb.TENCOT;
mota = newOb.MOTA;
}
//InsertobGetId
public int _InsertObGetId(Ob_DM_DuLieu ob, SqlConnection conn)
{
int num = 0;
if (conn.ConnectionString != "")
{
conn.Open();
SqlCommand command = new SqlCommand
{
Connection = conn,
CommandType = CommandType.Text,
CommandText = @"Insert Into DM_DuLieu (ID_DuLieu, TenBang, TenCot, MoTa) Values(@ID_DuLieu, @TenBang, @TenCot, @MoTa)Select @@IDENTITY"
};
command.Parameters.Add("ID_DuLieu", SqlDbType.Int).Value = ob.ID_DULIEU;
if (ob.TENBANG.Trim() == "")
{
command.Parameters.Add("TenBang", SqlDbType.VarChar).Value = DBNull.Value;
}
else
{
command.Parameters.Add("TenBang", SqlDbType.VarChar).Value = ob.TENBANG;
}
if (ob.TENCOT.Trim() == "")
{
command.Parameters.Add("TenCot", SqlDbType.VarChar).Value = DBNull.Value;
}
else
{
command.Parameters.Add("TenCot", SqlDbType.VarChar).Value = ob.TENCOT;
}
if (ob.MOTA.Trim() == "")
{
command.Parameters.Add("MoTa", SqlDbType.NVarChar).Value = DBNull.Value;
}
else
{
command.Parameters.Add("MoTa", SqlDbType.NVarChar).Value = ob.MOTA;
}
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);
}
//Insert ob
public bool _InsertOb(Ob_DM_DuLieu ob, SqlConnection conn)
{
if (conn.ConnectionString == "")
{
return(false);
}
conn.Open();
SqlCommand command = new SqlCommand
{
Connection = conn,
CommandType = CommandType.Text,
CommandText = @"Insert Into DM_DuLieu (ID_DuLieu, TenBang, TenCot, MoTa) Values(@ID_DuLieu, @TenBang, @TenCot, @MoTa)"
};
command.Parameters.Add("ID_DuLieu", SqlDbType.Int).Value = ob.ID_DULIEU;
if (ob.TENBANG.Trim() == "")
{
command.Parameters.Add("TenBang", SqlDbType.VarChar).Value = DBNull.Value;
}
else
{
command.Parameters.Add("TenBang", SqlDbType.VarChar).Value = ob.TENBANG;
}
if (ob.TENCOT.Trim() == "")
{
command.Parameters.Add("TenCot", SqlDbType.VarChar).Value = DBNull.Value;
}
else
{
command.Parameters.Add("TenCot", SqlDbType.VarChar).Value = ob.TENCOT;
}
if (ob.MOTA.Trim() == "")
{
command.Parameters.Add("MoTa", SqlDbType.NVarChar).Value = DBNull.Value;
}
else
{
command.Parameters.Add("MoTa", SqlDbType.NVarChar).Value = ob.MOTA;
}
try
{
command.ExecuteNonQuery();
}
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(false);
}
command.Dispose();
command = null;
conn.Close();
return(true);
}
//GetObWhere
public Ob_DM_DuLieu _GetObWhere(string keyword, SqlConnection conn)
{
if (conn.ConnectionString == "")
{
return(null);
}
conn.Open();
Ob_DM_DuLieu ob = new Ob_DM_DuLieu();
SqlCommand command = new SqlCommand
{
Connection = conn,
CommandType = CommandType.Text,
CommandText = @"Select ID_DuLieu, TenBang, TenCot, MoTa From DM_DuLieu Where " + keyword + ""
};
SqlDataReader reader = command.ExecuteReader();
int num = 0;
while (reader.Read())
{
num++;
if (reader[0] != DBNull.Value)
{
ob.ID_DULIEU = Convert.ToInt32(reader[0]);
}
if (reader[1] != DBNull.Value)
{
ob.TENBANG = Convert.ToString(reader[1]);
}
if (reader[2] != DBNull.Value)
{
ob.TENCOT = Convert.ToString(reader[2]);
}
if (reader[3] != DBNull.Value)
{
ob.MOTA = Convert.ToString(reader[3]);
}
}
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);
}
//ListWhere_sp
public List <Ob_DM_DuLieu> _ListWhere_sp(string StoredName, SqlParameter[] ArrayParameter, SqlConnection conn)
{
if (conn.ConnectionString == "")
{
return(null);
}
conn.Open();
List <Ob_DM_DuLieu> list = new List <Ob_DM_DuLieu>();
SqlCommand command = new SqlCommand
{
Connection = conn,
CommandType = CommandType.Text,
CommandText = StoredName
};
command.Parameters.AddRange(ArrayParameter);
SqlDataReader reader = command.ExecuteReader();
while (reader.Read())
{
Ob_DM_DuLieu ob = new Ob_DM_DuLieu();
if (reader[0] != DBNull.Value)
{
ob.ID_DULIEU = Convert.ToInt32(reader[0]);
}
if (reader[1] != DBNull.Value)
{
ob.TENBANG = Convert.ToString(reader[1]);
}
if (reader[2] != DBNull.Value)
{
ob.TENCOT = Convert.ToString(reader[2]);
}
if (reader[3] != DBNull.Value)
{
ob.MOTA = Convert.ToString(reader[3]);
}
list.Add(ob);
}
command.Dispose();
command = null;
reader.Dispose();
reader = null;
conn.Close();
return(list);
}
//ListAll
public List <Ob_DM_DuLieu> _ListAll(SqlConnection conn)
{
if (conn.ConnectionString == "")
{
return(null);
}
conn.Open();
List <Ob_DM_DuLieu> list = new List <Ob_DM_DuLieu>();
SqlCommand command = new SqlCommand
{
Connection = conn,
CommandType = CommandType.Text,
CommandText = @"Select ID_DuLieu, TenBang, TenCot, MoTa From DM_DuLieu"
};
SqlDataReader reader = command.ExecuteReader();
while (reader.Read())
{
Ob_DM_DuLieu ob = new Ob_DM_DuLieu();
if (reader[0] != DBNull.Value)
{
ob.ID_DULIEU = Convert.ToInt32(reader[0]);
}
if (reader[1] != DBNull.Value)
{
ob.TENBANG = Convert.ToString(reader[1]);
}
if (reader[2] != DBNull.Value)
{
ob.TENCOT = Convert.ToString(reader[2]);
}
if (reader[3] != DBNull.Value)
{
ob.MOTA = Convert.ToString(reader[3]);
}
list.Add(ob);
}
command.Dispose();
command = null;
reader.Dispose();
reader = null;
conn.Close();
return(list);
}