如何從兩個連接字符串中選擇？

Question

大家下午好，我遇到了一個問題，從使用C＃和Linq to Entities的兩個連接字符串中進行選擇。目前我有兩個連接字符串，它們是：

<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" /> 

我有兩個角色，分別是Admin和Clerk。我如何允許管理員使用第一個連接字符串登錄，而職員將使用第二個連接字符串登錄？

Answer 1

從this answer改編：

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 
    } 
} 

凡IsAdmin是一個函數採取user，如果他是一個管理員返回true和false如果不。

Answer 2

var conn = new EntityConnection(); 
conn.StoreConnection.ConnectionString = ConfigurationManager.ConnectionStrings["GameHutDBEntities2"]; 

this.Entities = new KurtDBEntities(conn);