// List All Candidates
public IEnumerable <CandidateInfo> GetAllCandidates()
{
List <CandidateInfo> canList = new List <CandidateInfo>();
using (NpgsqlConnection conn = new NpgsqlConnection(connstring))
{
conn.Open();
NpgsqlCommand cmd = new NpgsqlCommand();
cmd.Connection = conn;
cmd.CommandText = "SELECT * from public.us_election_states order by name";
cmd.CommandType = CommandType.Text;
Npgsql.NpgsqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
CandidateInfo can = new CandidateInfo();
can.ID = Convert.ToInt32(dr["ID"].ToString());
can.State = dr["name"].ToString();
can.Republicans = Convert.ToInt32(dr["percent_rep"].ToString());
can.Democrats = Convert.ToInt32(dr["percent_dem"].ToString());
canList.Add(can);
}
conn.Close();
}
return(canList);
}
// Create New Candidate
public void AddCandidate(CandidateInfo can)
{
using (NpgsqlConnection conn = new NpgsqlConnection(connstring))
{
NpgsqlCommand cmd = new NpgsqlCommand();
cmd.Connection = conn;
cmd.CommandText = "INSERT Into public.us_election_states(id,name,percent_rep,percent_dem) values(@ID,@Sname,@Rper,@Dper)";
cmd.CommandType = CommandType.Text;
cmd.Parameters.Add(new NpgsqlParameter("@ID", Convert.ToInt32(can.ID)));
cmd.Parameters.Add(new NpgsqlParameter("Sname", can.State));
cmd.Parameters.Add(new NpgsqlParameter("@Rper", can.Republicans));
cmd.Parameters.Add(new NpgsqlParameter("@Dper", can.Democrats));
conn.Open();
cmd.ExecuteNonQuery();
cmd.Dispose();
conn.Close();
}
}
// Update Candidate
public void UpdateCandidate(CandidateInfo can)
{
using (NpgsqlConnection conn = new NpgsqlConnection(connstring))
{
NpgsqlCommand cmd = new NpgsqlCommand();
cmd.Connection = conn;
cmd.CommandText = "UPDATE public.us_election_states SET name=@Sname,percent_rep=@Rper,percent_dem=@Dper where id=@ID";
cmd.CommandType = CommandType.Text;
cmd.Parameters.Add(new NpgsqlParameter("@ID", Convert.ToInt32(can.ID)));
cmd.Parameters.Add(new NpgsqlParameter("@Sname", can.State));
cmd.Parameters.Add(new NpgsqlParameter("@Rper", can.Republicans));
cmd.Parameters.Add(new NpgsqlParameter("@Dper", can.Democrats));
conn.Open();
cmd.ExecuteNonQuery();
cmd.Dispose();
conn.Close();
}
}
// Get Candidate by ID
public CandidateInfo GetCandidateById(int?canId)
{
CandidateInfo can = new CandidateInfo();
using (NpgsqlConnection conn = new NpgsqlConnection(connstring))
{
conn.Open();
NpgsqlCommand cmd = new NpgsqlCommand();
cmd.Connection = conn;
cmd.CommandText = "SELECT * from public.us_election_states where id=@ID";
cmd.CommandType = CommandType.Text;
cmd.Parameters.Add(new NpgsqlParameter("ID", canId));
Npgsql.NpgsqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
can.ID = Convert.ToInt32(dr["ID"].ToString());
can.State = dr["name"].ToString();
can.Republicans = Convert.ToInt32(dr["percent_rep"].ToString());
can.Democrats = Convert.ToInt32(dr["percent_dem"].ToString());
}
conn.Close();
}
return(can);
}
