ConfigurationManager.Connectionstrings("DBConnection") - 空异常

Question

在数据层我试图从 app.config 中获取连接字符串。

App.config

<connectionStrings>
   <add name="DBConnection" connectionString="Data Source=****;Initial Catalog=****;Persist Security Info=True;User ID=*****; Password=***" />
  </connectionStrings>

获取值：

Shared _ConnectionString As String = System.Configuration.ConfigurationManager.ConnectionStrings("DBConnection").ConnectionString

这不起作用。

我试过了

Shared _ConnectionString As String = System.Configuration.ConfigurationManager.ConnectionStrings(0).ConnectionString

它正在部分获取 - “Data Source=****;Initial Catalog=****;Persist Security Info=True”

请解释一下。

Answer 1

尝试使用ConnectionStrings["DBConnection"].ConnectionString 而不是ConnectionStrings("DBConnection").ConnectionString。