I have three tables in my database Game, Role and Player. Between Game and Role I have a many to many relationship and between Role and Player. I also have a one to many relationship between Game and Player. I have used Entity Framework to map my tables. What I am trying to achieve is to get all the players under specific gameID and roleID.
public IList<Game> GetGamesRolePlayer(int? gameID, int? roleID)
{
using (DbContextdb = new DbContext())
{
db.Configuration.ProxyCreationEnabled = false;
if (gameID.HasValue && !roleID.HasValue)
{
var query1 = (from g in db.Game.Include(r => r.Role)
where g.ID == gameID
select g).ToList();
_games = query1;
return _games;
}
if (gameID.HasValue && roleID.HasValue)
{
var query2 = (from g in db.Game
from r in db.Role.Include(p => p.Player)
where g.ID == game && r.ID == roleID
select g).ToList();
_games = query2;
return _games;
}
var query = from game in db.Game select game;
_games = query.Include(r => r.Role).ToList();
return _games;
}
}
I though you need the players but your code is telling another thing. If you need the games,you can build the following query using navigation properties:
using (DbContextdb = new DbContext())
{
db.Configuration.ProxyCreationEnabled = false;
IQueryable<Game> query=db.Game.Include(g=>g.Roles);
if (gameID.HasValue)
query=query.Where(g=>g.ID==gameID.Value)
if (roleID.HasValue)
query=query.Include(g=>g.Roles.Select(r=>r.Players))
.Where(g=>g.Roles.Any(r=>r.ID==roleID.Value))
return query.ToList();
}
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