如何在Visual Studio 2015中使用C＃创建到SQL Server数据库的连接字符串

Question

I have a database for user details in my SQL Server and I have already written a C# login application. I need to connect this application to my database to get user data. Before that, I think I should connect my database to Visual Studio using a connection string.

Can anyone please tell me a way of creating a connection string to connect my database to the application?

Answer 1

If you don't have an app.config file just add it by right click your project > add > new item > search box type application then select Application Configuration File then click Add button below. then open the App.config file and paste the code below.

It will be has a name of App.config in your project.

<configuration>
       <connectionStrings>
    <clear />
     <add name="conn" providerName="MySql.Data.MySqlClient" connectionString="data source=localhost;initial catalog=YourDBName;user=YourUsername;password=YourPassword; default command timeout=120;;" />
  </connectionStrings>

</configuration>

See this reference to run the code.

Good Luck!

Answer 2

You can use EntityFramework database first convention. The easiest way is to add ADO.NET Entity Data Model from visual studio Project -> Add New Item -> Data and then wizard helps you to connect to your database and creates required objects for tables in code