如何将存储在web.config文件中的连接字符串访问到其他层(将类库分类为N层应用程序)? [英] How to access connection string stored in web.config file to the others layer(class libraries into Physical separation as N-Tier Application)?

问题描述

请任何人可以帮助我了解我的项目.我无法将connString从web.config文件访问到在同一解决方案中作为类库项目物理隔离的BO和DA层.虽然我读了很多文章，但我不明白这样的体系结构.我在DA层中有CRUD方法和实体类.我只想验证DA中的DB方法.请任何人帮助我理解这一点，感谢您的合作和鼓励，电子工程师成为软件专家.谢谢

Please can anyone help me to understand my project. I am unable to access connString from web.config file to my BO and DA layers which are physically separated as class library projects in the same solution. Though i have read many articles but I can''t understand such architecture. I have CRUD methods and Entity Classes in DA layer. All I want is to validated DB method in DA only. Please anyone help me to understand this and I shall be thank full for you cooperation and encouragement to Electronic Engineer to become Software Professional. Thank you

推荐答案

AppDomain中的所有库都可以通过ConfigurationManager类(使用System.Configuration)访问web.config数据.
因此，在类库中，

All libraries in the AppDomain have access to the web.config data through the ConfigurationManager class (using System.Configuration)

So in a class library,

string connString = ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString;

非常感谢您的答复，感谢您的答复，但是如果我需要以类似下面的方式在BaseClass中编写它，我该如何获取我的conString.需要为connStr声明带构造函数的构造函数，不带参数作为connectionString.和朋友的财产.我不知道这两个类应该是私有的还是公共的，但是我在DNNuke站点体系结构中看到过这样的方法.请您以这种方式帮助我，先生，我将非常感谢.我尝试过但是出现很多错误，例如格式不正确"或无效的连接字符串...."
请您能喜欢我如何从一个层访问另一个层.谢谢

I am thankfull for your reply and I appreciate you answer but how can i get my conString if i need to write it in BaseClass in a fashion like below. Need to declare Constructors for connStr with argument and without arguments as connectionString. And a friend Property. I dont know either class should be private or public but such method i have seen in DNNuke site architecture. Please if you can help me in this way then sir i would be very much thankful. I tried But alot of errors like "The format is incorrect" or "Invalid connection String...."
Please could you favour me how to access my classes from one layer to another.Thank you

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