System.Configuration.ConfigurationErrorsException

Question

我有一个有几个文本框的表单，你在文本框中输入一些值，然后当你按下submit时，它会将值保存到一个文件中。然而，当我按下submit时，我得到了以下异常。

System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException: Unrecognized configuration section add. (C:\Program Files (x86)\Default Company Name\Setup\HomeInventory2.exe.Config line 3)
   at System.Configuration.ConfigurationSchemaErrors.ThrowIfErrors(Boolean ignoreLocal)
   at System.Configuration.BaseConfigurationRecord.ThrowIfParseErrors(ConfigurationSchemaErrors schemaErrors)
   at System.Configuration.BaseConfigurationRecord.ThrowIfInitErrors()
   at System.Configuration.ClientConfigurationSystem.EnsureInit(String configKey)
   --- End of inner exception stack trace ---
   at HomeInventory2.Services.Factory.GetService(String servicename) in C:\Users\Protego\documents\visual studio 2010\Projects\HomeInventory2\HomeInventory2\Services\Factory.cs:line 37
   at HomeInventory2.Business.Manager.GetService(String name) in C:\Users\Protego\documents\visual studio 2010\Projects\HomeInventory2\HomeInventory2\Business\Manager.cs:line 14
   at HomeInventory2.Business.InventoryMngr.Create(CreateInventory inv) in C:\Users\Protego\documents\visual studio 2010\Projects\HomeInventory2\HomeInventory2\Business\InventoryMngr.cs:line 19
   at HomeInventory2.Form1.submitButton_Click(Object sender, EventArgs e) in C:\Users\Protego\documents\visual studio 2010\Projects\HomeInventory2\HomeInventory2\Form1.cs:line 52
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

如果我没看错的话，问题出在我的App.config文件中。但我在该文件中看不到任何问题--如下所示。

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <add key="InventorySvc" value="HomeInventory2.Services.InventorySvc" />
</configuration>

Answer 1

<add key应该像<appSettings>一样在里面，没有配置->add。它应该类似于configuration->appsettings->add。

Answer 2

您的配置文件应如下所示：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
    <add key="InventorySvc" value="HomeInventory2.Services.InventorySvc"/>
  </appSettings>
</configuration>

appSettings - .NET中预定义的配置节之一