public static bool Create(Grado grado)
{
using (SqlConnection connection = DBConfig.GetInstance().GetConnection())
{
try
{
SqlCommand query = new SqlCommand("spGradoCreate", connection)
{
CommandType = CommandType.StoredProcedure
};
query.Parameters.AddWithValue("@nombre", grado.Nombre);
query.Parameters.AddWithValue("@profesorID", grado.ProfesorID);
int rowsAffected = query.ExecuteNonQuery();
if (rowsAffected == 1)
{
return(true);
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
return(false);
}
public static bool Delete(int id)
{
using (SqlConnection connection = DBConfig.GetInstance().GetConnection())
{
try
{
SqlCommand query = new SqlCommand("spGradoDeleteByID", connection)
{
CommandType = CommandType.StoredProcedure
};
query.Parameters.AddWithValue("@id", id);
int rowsAffected = query.ExecuteNonQuery();
if (rowsAffected == 1)
{
return(true);
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
return(false);
}
public static List <Grado> GetAll()
{
List <Grado> grados = new List <Grado>();
using (SqlConnection connection = DBConfig.GetInstance().GetConnection())
{
try
{
SqlCommand query = new SqlCommand("spGradoGetAll", connection)
{
CommandType = CommandType.StoredProcedure
};
SqlDataReader reader = query.ExecuteReader();
while (reader.Read())
{
Grado grado = new Grado
{
ID = Convert.ToInt32(reader["id"]),
Nombre = Convert.ToString(reader["nombre"]),
ProfesorID = Convert.ToInt32(reader["profesorID"])
};
grados.Add(grado);
}
} catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
return(grados);
}
public static Grado GetByID(int id)
{
Grado grado = null;
using (SqlConnection connection = DBConfig.GetInstance().GetConnection())
{
try
{
SqlCommand query = new SqlCommand("spGradoGetByID", connection)
{
CommandType = CommandType.StoredProcedure
};
query.Parameters.AddWithValue("@id", id);
SqlDataReader reader = query.ExecuteReader();
while (reader.Read())
{
grado = new Grado
{
ID = Convert.ToInt32(reader["id"]),
Nombre = Convert.ToString(reader["nombre"]),
ProfesorID = Convert.ToInt32(reader["profesorID"])
};
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
return(grado);
}
public static DBConfig GetInstance()
{
try
{
if (Instance == null)
{
Instance = new DBConfig();
}
Instance.Connection = new SqlConnection(ConnectionString);
Instance.Connection.Open();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
return(Instance);
}
