public InstructorEditViewModel(SqlConnection Connection)
{
string sql = $@"
SELECT
c.Id,
c.[name]
FROM cohorts c";
using (SqlConnection conn = Connection)
{
conn.Open();
using (SqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText = sql;
SqlDataReader reader = cmd.ExecuteReader();
List <Cohort> CurrentCohorts = new List <Cohort>();
while (reader.Read())
{
Cohort cohort = new Cohort
{
Id = reader.GetInt32(reader.GetOrdinal("id")),
Name = reader.GetString(reader.GetOrdinal("name"))
};
CurrentCohorts.Add(cohort);
}
var selectedItems = CurrentCohorts.Select(c => new SelectListItem
{
Text = c.Name,
Value = c.Id.ToString()
})
.ToList();
Cohorts = selectedItems;
reader.Close();
}
}
}
public void GetAllCohorts()
{
using (SqlConnection conn = Connection)
{
conn.Open();
using (SqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText = @"SELECT c.Id, c.Designation from Cohort c";
SqlDataReader reader = cmd.ExecuteReader();
List <Cohort> cohorts = new List <Cohort>();
while (reader.Read())
{
Cohort cohort = new Cohort
{
Id = reader.GetInt32(reader.GetOrdinal("Id")),
Designation = reader.GetString(reader.GetOrdinal("Designation"))
};
cohorts.Add(cohort);
}
Cohorts = cohorts.Select(li => new SelectListItem
{
Text = li.Designation,
Value = li.Id.ToString()
}).ToList();
Cohorts.Insert(0, new SelectListItem
{
Text = "Choose cohort...",
Value = "0"
});
}
}
}
public void GetAllStuff(int id)
{
using (SqlConnection conn = Connection)
{
conn.Open();
using (SqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText = @"SELECT c.Id, c.Designation from Cohort c";
SqlDataReader reader = cmd.ExecuteReader();
List <Cohort> cohorts = new List <Cohort>();
while (reader.Read())
{
Cohort cohort = new Cohort
{
Id = reader.GetInt32(reader.GetOrdinal("Id")),
Designation = reader.GetString(reader.GetOrdinal("Designation"))
};
cohorts.Add(cohort);
}
Cohorts = cohorts.Select(li => new SelectListItem
{
Text = li.Designation,
Value = li.Id.ToString()
}).ToList();
reader.Close();
}
using (SqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText = @"
SELECT i.Id,
i.FirstName,
i.LastName,
i.SlackHandle,
i.Speciality,
i.CohortId
FROM Instructor i
WHERE i.Id = @id
";
cmd.Parameters.Add(new SqlParameter("@id", id));
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
Instructor.Id = reader.GetInt32(reader.GetOrdinal("Id"));
Instructor.FirstName = reader.GetString(reader.GetOrdinal("FirstName"));
Instructor.LastName = reader.GetString(reader.GetOrdinal("LastName"));
Instructor.SlackHandle = reader.GetString(reader.GetOrdinal("SlackHandle"));
Instructor.Speciality = reader.GetString(reader.GetOrdinal("Speciality"));
Instructor.CohortId = reader.GetInt32(reader.GetOrdinal("CohortId"));
}
;
reader.Close();
}
}
}
