public void Eliminar(int id)
{
try
{
using (var ctx = new NetFramWorkContext())
{
ctx.Entry(new Alumno {
id = id
}).State = EntityState.Deleted;
ctx.SaveChanges();
}
}
catch (Exception e)
{
throw new Exception(e.Message);
}
}
public void Guardar()
{
try
{
using (var context = new NetFramWorkContext())
{
if (this.id == 0)
{
context.Entry(this).State = EntityState.Added;
}
else
{
context.Database.ExecuteSqlCommand(
"DELETE FROM AlumnoCurso WHERE Alumno_id = @id",
new SqlParameter("id", this.id)
);
var cursoBK = this.Cursos;
this.Cursos = null;
context.Entry(this).State = EntityState.Modified;
this.Cursos = cursoBK;
}
foreach (var c in this.Cursos)
{
context.Entry(c).State = EntityState.Unchanged;
}
context.SaveChanges();
}
}
catch (Exception e)
{
throw new Exception(e.Message);
}
}