Asp.net 在 动态库中读取配置文件连接串

using System.Configuration; //引入必要的动态库

public static class MyConnectionString
    {
        private static string connectionString;

        static MyConnectionString()
        {
            Configuration config =
                System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration(
                System.Web.HttpRuntime.AppDomainAppVirtualPath);
            connectionString = config.ConnectionStrings.ConnectionStrings["communityConnectionString"].ConnectionString;
        }

        public static string ConnectionString { get { return connectionString; } }
    }