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Question

<configuration>
  <appSenttings>
    <add key="dbstring" value="Data Source=.\SQLEXPRESS;AttachDbFilename=E:\ASP.NET\text8\App_Data\practise_Data.MDF;Integrated Security=True;User Instance=True"/>
    </appSenttings>
  <connectionStrings>
运行后出现：无法识别的配置节 appSenttings这样的错误

Answer 1

<connectionStrings>
<add key="dbstring" value="Data Source=.\SQLEXPRESS;AttachDbFilename=E:\ASP.NET\text8\App_Data\practise_Data.MDF;Integrated Security=True;User Instance=True"/>
  </connectionStrings>

Answer 2

<appSenttings> 
to
<appSettings>