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這非常令人困惑。System.InvalidOperationException：在應用程序配置文件中找不到名爲'SALESDBEntities'的連接字符串
我有一個主項目和類庫的解決方案。我所有的DbContext都在類庫中。我手動將上下文的連接字符串從類庫複製到主項目。除了一個項目外，我使用這個設置來處理許多沒有問題的項目。
的app.config的類庫：
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
<sectionGroup name="applicationSettings" type="System.Configuration.ApplicationSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<section name="Common_Code.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</sectionGroup>
</configSections>
<connectionStrings>
<add name="SALESDBEntities" connectionString="metadata=res://CommonCode/Datasets.Contexts.Sales_Data.csdl|res://CommonCode/Datasets.Contexts.Sales_Data.ssdl|res://CommonCode/Datasets.Contexts.Sales_Data.msl;provider=System.Data.SqlClient;provider connection string="data source=server2\SQLEXPRESS;initial catalog=SALESDB;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
<add name="DESIGNDBEntities" connectionString="metadata=res://CommonCode/Datasets.Contexts.Design_Data.csdl|res://CommonCode/Datasets.Contexts.Design_Data.ssdl|res://CommonCode/Datasets.Contexts.Design_Data.msl;provider=System.Data.SqlClient;provider connection string="data source=server2\SQLEXPRESS;initial catalog=DESIGNDB;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
<add name="PRODDBEntities" connectionString="metadata=res://CommonCode/Datasets.Contexts.Manufacturing.Manufacturing_Data.csdl|res://CommonCode/Datasets.Contexts.Manufacturing.Manufacturing_Data.ssdl|res://CommonCode/Datasets.Contexts.Manufacturing.Manufacturing_Data.msl;provider=System.Data.SqlClient;provider connection string="data source=server2\SQLEXPRESS;initial catalog=PRODDB;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
<add name="QCDBEntities" connectionString="metadata=res://CommonCode/Datasets.Contexts.QC_Data.csdl|res://CommonCode/Datasets.Contexts.QC_Data.ssdl|res://CommonCode/Datasets.Contexts.QC_Data.msl;provider=System.Data.SqlClient;provider connection string="data source=S612SRVR1\SQLEXPRESS;initial catalog=QCDB;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
</connectionStrings>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
</configuration>
的app.config爲主營項目：
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
<sectionGroup name="applicationSettings" type="System.Configuration.ApplicationSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<section name="Common_Code.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</sectionGroup>
</configSections>
<connectionStrings>
<add name="SALESDBEntities" connectionString="metadata=res://CommonCode/Datasets.Contexts.Sales_Data.csdl|res://CommonCode/Datasets.Contexts.Sales_Data.ssdl|res://CommonCode/Datasets.Contexts.Sales_Data.msl;provider=System.Data.SqlClient;provider connection string="data source=server2\SQLEXPRESS;initial catalog=SALESDB;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
<add name="DESIGNDBEntities" connectionString="metadata=res://CommonCode/Datasets.Contexts.Design_Data.csdl|res://CommonCode/Datasets.Contexts.Design_Data.ssdl|res://CommonCode/Datasets.Contexts.Design_Data.msl;provider=System.Data.SqlClient;provider connection string="data source=server2\SQLEXPRESS;initial catalog=DESIGNDB;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
<add name="PRODDBEntities" connectionString="metadata=res://CommonCode/Datasets.Contexts.Manufacturing.Manufacturing_Data.csdl|res://CommonCode/Datasets.Contexts.Manufacturing.Manufacturing_Data.ssdl|res://CommonCode/Datasets.Contexts.Manufacturing.Manufacturing_Data.msl;provider=System.Data.SqlClient;provider connection string="data source=server2\SQLEXPRESS;initial catalog=PRODDB;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
<add name="QCDBEntities" connectionString="metadata=res://CommonCode/Datasets.Contexts.QC_Data.csdl|res://CommonCode/Datasets.Contexts.QC_Data.ssdl|res://CommonCode/Datasets.Contexts.QC_Data.msl;provider=System.Data.SqlClient;provider connection string="data source=S612SRVR1\SQLEXPRESS;initial catalog=QCDB;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
</connectionStrings>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
</configuration>
他們是毫不誇張地相同。
根據我的n日誌我得到的例外是：
System.InvalidOperationException：沒有名爲「SALESDBEntities」連接字符串可能會在應用程序配置文件中找到。
我不能爲了我的生活找出爲什麼這個異常繼續發生在這個項目中。兩個連接字符串都完全相同，並且可以在引用這個相同類庫的其他項目上工作。
主要項目是什麼樣的應用程序？ –
只是一個標準的C＃WPF應用程序。 – jlatimer11
那麼我真的沒有任何想法。檢查配置文件在運行時是否確實包含連接字符串，也許在構建過程中發生了一些混亂的事情。 –