WCF與N層架構

Question

我很難獲得WCF項目與我的Web應用程序一起工作。 我有解決方案下的3個項目，包括asp.net項目，DAL，WCF和WCF嘗試使用DAL中的函數，DAL從asp.net項目下的web.config文件中查找數據庫連接字符串。但是，每次我調用數據庫函數時，都會返回null的連接字符串。似乎我無法從WCF項目訪問asp.net項目中的web.config。理想的情況是在不修改任何代碼的情況下使用來自asp.net和WCF的DAL。

這個DAL庫繼承CommonApplication

public abstract class BaseDatabaseApplication : BaseApplication 
    { 

     protected readonly string myConnection; // connection string to the publisher (master) database 




     public BaseDatabaseApplication() 
     { 
      // all connection strings are configured here, in the base class 
      myConnection = CommonApplication.Configuration.ConnectionStrings.ConnectionStrings["myConnection"].ConnectionString;    
      // some function here 
     } 
} 

BaseApplication.cs

public abstract class BaseApplication 
    { 
     // since its static, there will only be one instance of it. 
     private static CommonApplication applications; 

     public static CommonApplication Applications 
     { 
      get { return applications; } 
      set { applications = value; } 
     } 
    } 

CommonApplication.cs

public class CommonApplication 
    { 
     // only want to process the config once. 
     private static Configuration configuration; 

     public static Configuration Configuration 
     { 
      get { return configuration; } 
      set { configuration = value; } 
     } 
} 

Answer 1

的System.Configuration.Confi gurationManager類應該處理這種情況。

string connectionString = ConfigurationManager.ConnectionStrings["connectionStringName"].ConnectionString; 

嘗試調整您的應用程序以使用它。