Question

Good afternoon, I have encountered a problem to choose from two connection strings using C# and Linq to Entities. Currently I have two connection strings which are:

<add name="GameHutDBEntities1" connectionString="metadata=res://*/GameHutModel.csdl|res://*/GameHutModel.ssdl|res://*/GameHutModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=EMMANUEL-PC\SQLEXPRESS;Initial Catalog=GameHutDB;user id=GameHutAdmin; password=123;MultipleActiveResultSets=True&quot;" providerName="System.Data.EntityClient" />
<add name="GameHutDBEntities2" connectionString="metadata=res://*/GameHutModel.csdl|res://*/GameHutModel.ssdl|res://*/GameHutModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=EMMANUEL-PC\SQLEXPRESS;Initial Catalog=GameHutDB;user id=test; password=1234;MultipleActiveResultSets=True&quot;" providerName="System.Data.EntityClient" />

I have two roles which are Admin and Clerk. How can I allow the admin to login with the first connection string and the clerk will login with the second connection string?

Answer 1

Adapted from this answer:

string connString;

if(IsAdmin(user))
    connString = ConfigurationManager.ConnectionStrings["GameHutDBEntities1"];
else
    connString = ConfigurationManager.ConnectionStrings["GameHutDBEntities2"];

using(EntityConnection con = new EntityConnection(connString))
{
  using (Entities context = new Entities(con))
  {
      // Some code here
  }
}

Where IsAdmin is a function taking a user and returning true if he is an admin and false if not.