为什么 sqlconnection.open 在我的配置文件中四处乱窜？
Why is sqlconnection.open nosing around in my config file?
今天我想，哦，我将添加一些 SQL 日志记录到我们拥有的 C# SFTP 自定义（控制台）程序。我没有写它，它可能有一个奇怪的配置文件。看起来 SQL 性能计数器需要一个符合规范的配置文件？添加 TypeInitializationException 的捕获提供了一些更具体和有用的信息。
所以我从 app.config 文件中获取连接字符串，但为了说明我为什么感到沮丧，我在下面对连接字符串进行了硬编码。如果我提供完整的连接字符串，为什么它会转到配置文件。显然 SqlPerformanceCounters 对这些东西很挑剔？？？
if (!String.IsNullOrWhiteSpace(SqlConnectionString))
{
try
{
WriteLogConsole("SqlConnectionObj - about to open with SqlConnectionString='" +
SqlConnectionString + "'");
//SqlConnection SqlConnectionObj = new SqlConnection(SqlConnectionString);
// Even using a hard-coded connection string I have this issue!
SqlConnection SqlConnectionObj = new SqlConnection("Server=abc;Database=MyDBName;Trusted_Connection=true");
SqlConnectionObj.Open();
WriteLogConsole("SqlConnectionObj - opened successfully");
}
catch (TypeInitializationException ex)
{
WriteLogConsole("TypeInitializationException=" + ex.ToString());
// don't stop, keep going. Logging is nice, but not critical
}
catch (SqlException ex)
{
WriteLogConsole("SqlException=" + ex.ToString());
// don't stop, keep going. Logging is nice, but not critical
}
catch (Exception ex)
{
WriteLogConsole("System.Exception=" + ex.Message);
// don't stop, keep going. Logging is nice, but not critical
}
}
抛出的错误的简短版本是这样的：
Unrecognized configuration section
CustomAppSettings/LogExceptionsToFile
完全异常：
SqlConnectionObj - about to open with SqlConnectionString='Server=abc;Database=MyDBName;Trusted_Connection=true'
Exception thrown: 'System.TypeInitializationException' in System.Data.dll
TypeInitializationException=System.TypeInitializationException: The type initializer for 'System.Data.SqlClient.SqlConnection' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.Data.SqlClient.SqlConnectionFactory' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.Data.SqlClient.SqlPerformanceCounters' threw an exception. ---> System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException: Unrecognized configuration section CustomAppSettings/LogExceptionsToFile
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 System.Configuration.ConfigurationManager.PrepareConfigSystem()
at System.Configuration.ConfigurationManager.GetSection(String sectionName)
at System.Configuration.PrivilegedConfigurationManager.GetSection(String sectionName)
at System.Diagnostics.DiagnosticsConfiguration.GetConfigSection()
at System.Diagnostics.DiagnosticsConfiguration.Initialize()
at System.Diagnostics.DiagnosticsConfiguration.get_SwitchSettings()
at System.Diagnostics.Switch.InitializeConfigSettings()
at System.Diagnostics.Switch.InitializeWithStatus()
at System.Diagnostics.Switch.get_SwitchSetting()
at System.Data.ProviderBase.DbConnectionPoolCounters..ctor(String categoryName, String categoryHelp)
at System.Data.SqlClient.SqlPerformanceCounters..ctor()
at System.Data.SqlClient.SqlPerformanceCounters..cctor()
--- End of inner exception stack trace ---
at System.Data.SqlClient.SqlConnectionFactory..cctor()
--- End of inner exception stack trace ---
at System.Data.SqlClient.SqlConnection..cctor()
--- End of inner exception stack trace ---
at System.Data.SqlClient.SqlConnection..ctor(String connectionString)
at WinSCPWrapperGet.Program.Main(String[] args)
我认为这与 this.
之类的东西有关
我要改变什么才能让它开心？我看到其他关于使用的帖子，但我没有群组。我在下面添加了所有内容以尝试解决此问题。程序的其余部分运行良好，并根据需要使用配置文件。
<configuration>
<configSections> <!-- this was not here when I first got the error,
me thinks I need something like to fix this issue -->
<sectionGroup name="CustomAppSettings" type="System.Configuration.UserSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<section name="MyApp.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false"/>
</sectionGroup>
</configSections>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6"/>
</startup>
<CustomAppSettings>
<!-- we have many more parms, but here is an example;
each SFTP site can have about 10 config parms -->
<Site1>
<add key="HostName" value="sftp.somesite1.com"/>
<add key="HostPort" value=""/>
</Site1>
<Site2>
<add key="HostName" value="sftp.somesite1.com"/>
<add key="HostPort" value=""/>
</Site2>
... etc...
注意：现在正在制作中，我正在对其进行改进。我们在不同的计划任务中可能有几十个配置文件，所以我不愿意更改所有这些文件，即使它们设计得不完美。
找到这个：https://docs.microsoft.com/en-us/dotnet/framework/data/adonet/performance-counters
它告诉我们可以在配置文件中调整性能计数器：
<system.diagnostics>
<switches>
<add name="ConnectionPoolPerformanceCounterDetail"
value="4"/>
</switches>
</system.diagnostics>
所以最重要的是，我只需要知道如何使我的配置文件与 SQL 一起工作，即使配置中的连接字符串不是问题。
不需要群，至此以下内容已经绕过原问题：
<configuration>
<configSections>
<section name="CustomAppSettings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false"/>
</configSections>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6"/>
</startup>
<CustomAppSettings>
etc...
参考：https://blog.ivankahl.com/creating-custom-configuration-sections-in-app-config/
今天我想，哦，我将添加一些 SQL 日志记录到我们拥有的 C# SFTP 自定义（控制台）程序。我没有写它，它可能有一个奇怪的配置文件。看起来 SQL 性能计数器需要一个符合规范的配置文件？添加 TypeInitializationException 的捕获提供了一些更具体和有用的信息。
所以我从 app.config 文件中获取连接字符串，但为了说明我为什么感到沮丧，我在下面对连接字符串进行了硬编码。如果我提供完整的连接字符串，为什么它会转到配置文件。显然 SqlPerformanceCounters 对这些东西很挑剔？？？
if (!String.IsNullOrWhiteSpace(SqlConnectionString))
{
try
{
WriteLogConsole("SqlConnectionObj - about to open with SqlConnectionString='" +
SqlConnectionString + "'");
//SqlConnection SqlConnectionObj = new SqlConnection(SqlConnectionString);
// Even using a hard-coded connection string I have this issue!
SqlConnection SqlConnectionObj = new SqlConnection("Server=abc;Database=MyDBName;Trusted_Connection=true");
SqlConnectionObj.Open();
WriteLogConsole("SqlConnectionObj - opened successfully");
}
catch (TypeInitializationException ex)
{
WriteLogConsole("TypeInitializationException=" + ex.ToString());
// don't stop, keep going. Logging is nice, but not critical
}
catch (SqlException ex)
{
WriteLogConsole("SqlException=" + ex.ToString());
// don't stop, keep going. Logging is nice, but not critical
}
catch (Exception ex)
{
WriteLogConsole("System.Exception=" + ex.Message);
// don't stop, keep going. Logging is nice, but not critical
}
}
抛出的错误的简短版本是这样的：
Unrecognized configuration section CustomAppSettings/LogExceptionsToFile
完全异常：
SqlConnectionObj - about to open with SqlConnectionString='Server=abc;Database=MyDBName;Trusted_Connection=true'
Exception thrown: 'System.TypeInitializationException' in System.Data.dll
TypeInitializationException=System.TypeInitializationException: The type initializer for 'System.Data.SqlClient.SqlConnection' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.Data.SqlClient.SqlConnectionFactory' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.Data.SqlClient.SqlPerformanceCounters' threw an exception. ---> System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException: Unrecognized configuration section CustomAppSettings/LogExceptionsToFile
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 System.Configuration.ConfigurationManager.PrepareConfigSystem()
at System.Configuration.ConfigurationManager.GetSection(String sectionName)
at System.Configuration.PrivilegedConfigurationManager.GetSection(String sectionName)
at System.Diagnostics.DiagnosticsConfiguration.GetConfigSection()
at System.Diagnostics.DiagnosticsConfiguration.Initialize()
at System.Diagnostics.DiagnosticsConfiguration.get_SwitchSettings()
at System.Diagnostics.Switch.InitializeConfigSettings()
at System.Diagnostics.Switch.InitializeWithStatus()
at System.Diagnostics.Switch.get_SwitchSetting()
at System.Data.ProviderBase.DbConnectionPoolCounters..ctor(String categoryName, String categoryHelp)
at System.Data.SqlClient.SqlPerformanceCounters..ctor()
at System.Data.SqlClient.SqlPerformanceCounters..cctor()
--- End of inner exception stack trace ---
at System.Data.SqlClient.SqlConnectionFactory..cctor()
--- End of inner exception stack trace ---
at System.Data.SqlClient.SqlConnection..cctor()
--- End of inner exception stack trace ---
at System.Data.SqlClient.SqlConnection..ctor(String connectionString)
at WinSCPWrapperGet.Program.Main(String[] args)
我认为这与 this.
之类的东西有关我要改变什么才能让它开心？我看到其他关于使用的帖子，但我没有群组。我在下面添加了所有内容以尝试解决此问题。程序的其余部分运行良好，并根据需要使用配置文件。
<configuration>
<configSections> <!-- this was not here when I first got the error,
me thinks I need something like to fix this issue -->
<sectionGroup name="CustomAppSettings" type="System.Configuration.UserSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<section name="MyApp.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false"/>
</sectionGroup>
</configSections>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6"/>
</startup>
<CustomAppSettings>
<!-- we have many more parms, but here is an example;
each SFTP site can have about 10 config parms -->
<Site1>
<add key="HostName" value="sftp.somesite1.com"/>
<add key="HostPort" value=""/>
</Site1>
<Site2>
<add key="HostName" value="sftp.somesite1.com"/>
<add key="HostPort" value=""/>
</Site2>
... etc...
注意：现在正在制作中，我正在对其进行改进。我们在不同的计划任务中可能有几十个配置文件，所以我不愿意更改所有这些文件，即使它们设计得不完美。
找到这个：https://docs.microsoft.com/en-us/dotnet/framework/data/adonet/performance-counters
它告诉我们可以在配置文件中调整性能计数器：
<system.diagnostics>
<switches>
<add name="ConnectionPoolPerformanceCounterDetail"
value="4"/>
</switches>
</system.diagnostics>
所以最重要的是，我只需要知道如何使我的配置文件与 SQL 一起工作，即使配置中的连接字符串不是问题。
不需要群，至此以下内容已经绕过原问题：
<configuration>
<configSections>
<section name="CustomAppSettings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false"/>
</configSections>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6"/>
</startup>
<CustomAppSettings>
etc...
参考：https://blog.ivankahl.com/creating-custom-configuration-sections-in-app-config/