How to call two linq queries in another method

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Hi,

I have two queries in my repository class and each of them call different group of users. I would like to call the two queries in my authentication method below, but I am little unsure, how would I go about doing this so? I currently have one query calling authentication method below but I would like to know, how can I call both of the queries. Would I need to group my queries together, if so, how?

Repository class:

C#

public Cust trial_test(string username, string password)
      {
          var query = from s in db.Subscriptions
                      join u in db.UserDetails on s.sUID equals u.uID
                      where s.ExpiryDate >= DateTime.Now &&
                      s.sPID.Value == 163 &&
                      s.All.Value != true &&
                      u.uUsername == username &&
                      u.uPassword == password
                      select u;
          return query.FirstOrDefault();
      }

      public Cust full_test(string username, string password)
      {
          var query = from s in db.Subscriptions
                      join u in db.UserDetails on s.sUID equals u.uID
                      where s.ExpiryDate >= DateTime.Now &&
                      s.sPID.Value == 163 &&
                      s.All.Value == true &&
                      u.uUsername == username &&
                      u.uPassword == password
                      select u;
          return query.FirstOrDefault();
      }

Authentication method:

C#

Cust user = repository.trial_test(credentials[0], credentials[1]);

                if (user == null)
                {
                var resp = new HttpResponseMessage(HttpStatusCode.Unauthorized)
                {
                    Content = new StringContent(string.Format("access denied")),
                };
                return Unauthorized(request);
            }
            else
            {
                IPrincipal principal = new GenericPrincipal(new GenericIdentity(user.Username, BasicAuthResponseHeaderValue), null);
                Thread.CurrentPrincipal = principal;
                HttpContext.Current.User = principal;
            }
            return base.SendAsync(request, cancellationToken);

Please help. Any advice, would be very much appreciated. Many thanks.

Posted 22-Apr-14 22:29pm

miss786

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Er Daljeet Singh · Answer 1 · 2014-04-23T00:32:00

try to make use of optional parameter in your function like this

public Cust trial_test(string username, string password, int group = 0)
       {
           if (group == 0)
           {

               var query = from s in db.Subscriptions
                           join u in db.UserDetails on s.sUID equals u.uID
                           where s.ExpiryDate >= DateTime.Now &&
                           s.sPID.Value == 163 &&
                           s.All.Value != true &&
                           u.uUsername == username &&
                           u.uPassword == password
                           select u;
               return query.FirstOrDefault();
           }
           else
           {
               var query = from s in db.Subscriptions
                           join u in db.UserDetails on s.sUID equals u.uID
                           where s.ExpiryDate >= DateTime.Now &&
                           s.sPID.Value == 163 &&
                           s.All.Value == true &&
                           u.uUsername == username &&
                           u.uPassword == password
                           select u;
               return query.FirstOrDefault();
           }
       }



       Cust user = repository.trial_test(credentials[0], credentials[1],group:1);

//pass the value 1 to the group to execute the second query else it will call the first one.

aricode · Answer 2 · 2014-04-23T06:24:00

in both the queries only difference is the

s.All.Value != true

clause. If this is the case then one linq like below will work, considering s.All.Value is either true or false

public Cust trial_test(string username, string password, bool spidFlag)
      {


              var query = from s in db.Subscriptions
                          join u in db.UserDetails on s.sUID equals u.uID
                          where s.ExpiryDate >= DateTime.Now &&
                          s.sPID.Value == 163 &&
                          s.All.Value == spidFlag &&
                          u.uUsername == username &&
                          u.uPassword == password
                          select u;
              return query.FirstOrDefault();

      }

How to call two linq queries in another method

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