visual-studio “无法识别的配置部分 connectionStrings。”

"Unrecognized configuration section connectionStrings."

提问by Matty U

I had been working on a project in VS2005 that utilized a local connection to an Access DB.

我一直在 VS2005 中从事一个项目，该项目利用到 Access DB 的本地连接。

In the past week, I installed .NET framework 3.5 for use w/ a different project as well as VS6.

在过去的一周中，我安装了 .NET framework 3.5 以用于不同的项目以及 VS6。

I went back to my VS2005 application and suddenly there are big issues:

我回到我的 VS2005 应用程序，突然出现了大问题：

In the designer for any class utilizing my OLEDB connection showed this:

在使用我的 OLEDB 连接的任何类的设计器中都显示了这一点：

Unable to cast object of type 'System.Configuration.DefaultSection' to type 'System.Configuration.ConnectionStringsSection'. Hide

at System.Configuration.Configuration.get_ConnectionStrings() at Microsoft.VisualStudio.Shell.Design.Serialization.ConfigurationHelperService.ReadConnectionStrings(String configFileName, DocData configDocData, String prefix) at Microsoft.VisualStudio.Editors.SettingsDesigner.AppConfigSerializer.Deserialize(DesignTimeSettings Settings, String SectionName, DocData AppConfigDocData, MergeValueMode mergeMode, IUIService UIService) at Microsoft.VisualStudio.Editors.SettingsGlobalObjects.SettingsFileGlobalObject.LoadSettings(String fileName) at Microsoft.VisualStudio.Editors.SettingsGlobalObjects.SettingsFileGlobalObject.BuildType() at Microsoft.VisualStudio.Editors.SettingsGlobalObjects.SettingsFileGlobalObject.GetObjectType() at Microsoft.VisualStudio.Shell.Design.GlobalType.get_ObjectType() at Microsoft.VisualStudio.Shell.Design.GlobalObject.GetHashCode() at Microsoft.VisualStudio.Shell.Design.GlobalObjectService.GlobalKey.GetHashCode() at System.Collections.Generic.ObjectEqualityComparer1.GetHashCode(T obj) at System.Collections.Generic.Dictionary2.FindEntry(TKey key) at Microsoft.VisualStudio.Shell.Design.GlobalObjectService.GetGlobalObjects(Type baseType) at Microsoft.VisualStudio.Shell.Design.GlobalObjectService.GetGlobalObjects() at Microsoft.VisualStudio.Design.Serialization.CodeDom.AggregateTypeResolutionService.GetTypeFromGlobalObjects(String name, Boolean throwOnError, Boolean ignoreCase) at Microsoft.VisualStudio.Design.Serialization.CodeDom.AggregateTypeResolutionService.GetType(String name, Boolean throwOnError, Boolean ignoreCase) at Microsoft.VisualStudio.Design.Serialization.CodeDom.AggregateTypeResolutionService.GetType(String name, Boolean throwOnError) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.GetType(ITypeResolutionService trs, String name, Dictionary2 names) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.FillStatementTable(IDesignerSerializationManager manager, IDictionary table, Dictionary2 names, CodeStatementCollection statements, String className) at System.ComponentModel.Design.Serialization.TypeCodeDomSerializer.Deserialize(IDesignerSerializationManager manager, CodeTypeDeclaration declaration) at System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager manager) at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager) at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.DeferredLoadHandler.Microsoft.VisualStudio.TextManager.Interop.IVsTextBufferDataEvents.OnLoadCompleted(Int32 fReload)

无法将“System.Configuration.DefaultSection”类型的对象转换为“System.Configuration.ConnectionStringsSection”类型。隐藏

在 System.Configuration.Configuration.get_ConnectionStrings() 在 Microsoft.VisualStudio.Shell.Design.Serialization.ConfigurationHelperService.ReadConnectionStrings(String configFileName, DocData configDocData, String prefix) 在 Microsoft.VisualStudio.Editors.SettingsDesigner.AppConfigSerializer.Deserialize(DesignTimeSettings Settings, String SectionName, DocData AppConfigDocData, MergeValueMode mergeMode, IUIService UIService) at Microsoft.VisualStudio.Editors.SettingsGlobalObjects.SettingsFileGlobalObject.LoadSettings(String fileName) at Microsoft.VisualStudio.Editors.SettingsGlobalObjects.SettingsFileGlobalObject.BuildType() at Microsoft.VisualStudio.Editors.SettingsGlobalObjects .SettingsFileGlobalObject.GetObjectType() 在 Microsoft.VisualStudio.Shell.Design.GlobalType.get_ObjectType() 在 Microsoft.VisualStudio.Shell。Design.GlobalObject.GetHashCode() 在 Microsoft.VisualStudio.Shell.Design.GlobalObjectService.GlobalKey.GetHashCode() 在 System.Collections.Generic.ObjectEqualityComparer1.GetHashCode(T obj) at System.Collections.Generic.Dictionary2.FindEntry(TKey 键) 在 Microsoft.VisualStudio.Shell.Design.GlobalObjectService.GetGlobalObjects(Type baseType) 在 Microsoft.VisualStudio.Shell.Design.GlobalObjectService.GetGlobalObjects() 在 Microsoft.VisualStudio.Design.Serialization.CodeDom.AggregateTypeResolutionService。 GetTypeFromGlobalObjects(String name, Boolean throwOnError, Boolean ignoreCase) 在 Microsoft.VisualStudio.Design.Serialization.CodeDom.AggregateTypeResolutionService.GetType(String name, Boolean throwOnError, Boolean ignoreCase) 在 Microsoft.VisualStudio.Design.Serialization.CodeDom.AggregateTypeResolutionService.GetType(字符串名称，布尔 throwOnError) 在 System.ComponentModel.Design.Serialization.CodeDomSerializerBase.GetType(ITypeResolutionService trs，字符串名称，字典2 names) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.FillStatementTable(IDesignerSerializationManager manager, IDictionary table, Dictionary2 个名称，CodeStatementCollection 语句，String className) 在 System.ComponentModel.Design.Serialization.TypeCodeDomSerializer.Deserialize(IDesignerSerializationManager manager, CodeTypeDeclaration declaration) at System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager manager) at Microsoft.VisualStudio.Design .Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager) 在 Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.DeferredLoadHandler.Microsoft.VisualStudio.TextManager.Interop.IVsTextBufferDataEvents.OnLoadCompleted(Int32 fReload)

And when I ran the app, I encounter the following exception on startup:

当我运行应用程序时，我在启动时遇到以下异常：

"Unrecognized configuration section connectionStrings."

“无法识别的配置部分 connectionStrings。”

In looking online, these issues seem to commonly relate to things built in VS2005 and deployed on .net 1.1 framework; but this is all running as a windows forms application locally within VS (not on IIS). I've tried uninstalling and reinstalling VS2K5 to no avail.

在网上查看，这些问题似乎通常与 VS2005 中构建并部署在 .net 1.1 框架上的东西有关；但这一切都作为 Windows 窗体应用程序在 VS 本地运行（不在 IIS 上）。我试过卸载并重新安装 VS2K5 无济于事。

Any thoughts? Thanks, Matt

有什么想法吗？谢谢，马特

回答by Vin.X

This is a really old post, i know, but i have had the same problem recently, i have fixed it by putting:

这是一个非常老的帖子，我知道，但我最近遇到了同样的问题，我通过以下方式修复了它：

 <configSections>
    <section name="appSettings" type="System.Configuration.AppSettingsSection, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" restartOnExternalChanges="false" requirePermission="false"/>
    <section name="connectionStrings" type="System.Configuration.ConnectionStringsSection, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" requirePermission="false"/>
 <configSections>

before my connection strings:

在我的连接字符串之前：

    <connectionStrings>
        <add name="XXX" connectionString="Data Source=.;Initial Catalog=db;User Id=user;Password=pw;" providerName="System.Data.SqlClient"/>
      </connectionStrings>

so my app.config looks like:

所以我的 app.config 看起来像：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
     <configSections>
        <section name="appSettings" type="System.Configuration.AppSettingsSection, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" restartOnExternalChanges="false" requirePermission="false"/>
        <section name="connectionStrings" type="System.Configuration.ConnectionStringsSection, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" requirePermission="false"/>
     <configSections>   
    <connectionStrings>
        <add name="XXX" connectionString="Data Source=.;Initial Catalog=db;User Id=user;Password=pw;" providerName="System.Data.SqlClient"/>
      </connectionStrings>
</configuration>

In C# I am using below code to retrieve my connection string:

在 C# 中，我使用下面的代码来检索我的连接字符串：

ConfigurationFileMap fileMap = new ConfigurationFileMap("myApp.config"); //Path to your config file
Configuration configuration = ConfigurationManager.OpenMappedMachineConfiguration(fileMap);
this.connectionString = configuration.ConnectionStrings.ConnectionStrings["XXX"].ConnectionString;

回答by Richard Beier

This is a wild guess... but I think I've seen this before when you have something before the <configSections> element in your web.config. For example, this would cause an error:

这是一个疯狂的猜测......但我想我以前见过这个，当你在你的 web.config 中的 <configSections> 元素之前有一些东西。例如，这会导致错误：

<configuration>
  <connectionStrings [...] />
  <configSections>
    <sectionGroup name=[...] />
  </configSections>
</configuration>

The <configSections> element needs to come first:

<configSections> 元素需要先出现：

<configuration>
  <configSections>
    <sectionGroup name=[...] />
  </configSections>
  <connectionStrings [...] />
</configuration>

Probably not what's causing your problem but I thought I'd mention it...

可能不是导致您问题的原因，但我想我会提到它...

回答by Neeraj Lohumi

i had been facing the same issue.please check your machine.config file.

我遇到了同样的问题。请检查您的 machine.config 文件。

<configuration>
 <system.windows.forms jitDebugging="true"/>
 <configSections>
  <section name="appSettings" type="System.Configuration.AppSettingsSection, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" restartOnExternalChanges="false" requirePermission="false"/>
  <section name="connectionStrings" type="System.Configuration.ConnectionStringsSection, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" requirePermission="false"/>

and when i removed the

当我删除

..system.windows.forms jitDebugging="true"/>

..system.windows.forms jitDebugging="true"/>

it again worked fine..

它再次工作正常..