Question

我在使用我的Web应用程序处理WCF项目时遇到了困难。我在解决方案下有3个项目，包括asp.net项目，DAL，WCF和WCF尝试使用来自DAL的函数，DAL从asp.net项目下的web.config文件中查找数据库连接字符串。但是，每次调用数据库函数时，它都会返回null的连接字符串。好像我无法从WCF项目访问asp.net项目中的web.config。理想的情况是在不修改任何代码的情况下使用asp.net和WCF中的DAL。

此DAL库继承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

System.Configuration.ConfigurationManager类应该处理这种情况。

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

尝试调整您的应用程序以使用它。

具有N层架构的WCF

1 个答案: