如何在WPF中连接实体框架 [英] how to connect Entity Framework in wpf

问题描述

嗨
我有一个类库项目和一个WPF项目.
我正在尝试在类库中编写代码以使用实体框架连接到wpf项目.我收到错误消息配置系统初始化失败"

以下是App.Config
中的代码

Hi
I have a class library project and a WPF Project.
I am trying to write code inside class library to connect to a wpf project using entity framework. I get error "Configuration system failed to initialize"

below is the code in App.Config

<connectionStrings>
  <add name="dbQuickPhonebookContainer"

       connectionString="metadata=.\dBase.dbQuickPhonebook.csdl|.\dBase.dbQuickPhonebook.csdl|.\dBase.dbQuickPhonebook.msl;provider=System.Data.SqlClient; provider connection string="Data Source=localhost;attachdbfilename=|DataDirectory|\dbQuickPhonebook.edmx;Initial Catalog=dbQuickPhonebook;Integrated Security=True;MultipleActiveResultSets=False""

      providerName="System.Data.EntityClient" />
</connectionStrings>

以下是我班上的代码

below is the code inside my class

public class BusinessLayer 
    {
       
        string connString;

        public BusinessLayer()
        {
           
connString = ConfigurationManager.ConnectionStrings      ["dbQuickPhonebookContainer"].ConnectionString;
        }


    }

请帮助我在类内编写代码以获得连接字符串的名称.

Please help me write code inside the class to get the name of connection string.

推荐答案

您好检查了Wes给您的链接，它是否对您有帮助:
http://social.msdn.microsoft.com /Forums/zh-CN/vbgeneral/thread/41cfc8e2-c7f4-462d-9a43-e751500deb0a/ [ http://msdn.microsoft.com/en-us/netframework/first- steps-with-wcf.aspx [ ^ ]

祝您好运:)

Hi did you check out the link Wes gave you, and did it help:
http://social.msdn.microsoft.com/Forums/en-US/vbgeneral/thread/41cfc8e2-c7f4-462d-9a43-e751500deb0a/[^]

If not Im going to give you the link to the Microsoft documentation that contains a hole lot of articles and videos on the subject:
http://msdn.microsoft.com/en-us/netframework/first-steps-with-wcf.aspx[^]

So good luck to you :)

这篇关于如何在WPF中连接实体框架的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！