The presence of a configSections in an app.config breaks the connection initialiser.
To reproduce just create the most basic app possible (server name etc. is irrelevant):
using Microsoft.Data.SqlClient;
namespace TestSQL
{
class Program
{
static void Main(string[] args)
{
var connection = new SqlConnection("data source=.;initial catalog=blah;Trusted_Connection=Yes;persist security info=False");
connection.Open();
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<appSettings>
<add key="ConfigFolder" value="./config" />
</appSettings>
<configSections>
<clear />
</configSections>
</configuration>Unhandled exception. System.TypeInitializationException: The type initializer for 'Microsoft.Data.SqlClient.SqlAuthenticationProviderManager' threw an exception.
---> System.InvalidOperationException: Failed to read the config section for authentication providers.
---> System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize
---> System.Configuration.ConfigurationErrorsException: Only one <configSections> element allowed per config file and if present must be the first child of the root <configuration> element. (C:\Users\Jason\RiderProjects\TestSQL\TestSQL\bin\Debug\netcoreapp3.
0\TestSQL.dll.config line 6)
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.ClientConfigurationSystem.EnsureInit(String configKey)
at System.Configuration.ClientConfigurationSystem.PrepareClientConfigSystem(String sectionName)
at System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection(String sectionName)
at System.Configuration.ConfigurationManager.GetSection(String sectionName)
at Microsoft.Data.SqlClient.SqlAuthenticationProviderManager..cctor()
--- End of inner exception stack trace ---
at Microsoft.Data.SqlClient.SqlAuthenticationProviderManager..cctor()
--- End of inner exception stack trace ---
at Microsoft.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserIn
stance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, Boolean applyTransientFaultHandling, String accessToken, DbConnectionPool pool, SqlAuthenticationProviderManager sqlAuthProviderManager)
at Microsoft.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
at Microsoft.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
at Microsoft.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at Microsoft.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at Microsoft.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at Microsoft.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at Microsoft.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
at Microsoft.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
at Microsoft.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
at Microsoft.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
at Microsoft.Data.SqlClient.SqlConnection.Open()
at TestSQL.Program.Main(String[] args) in C:\Users\Jason\RiderProjects\TestSQL\TestSQL\Program.cs:line 10
The presence of a configSections in an app.config breaks the connection initialiser.
To reproduce just create the most basic app possible (server name etc. is irrelevant):
Adding an app.config with various combinations of sections such as
causes the exception, as does adding a
<system.diagnostics>section.This is on .Net Core 3.0 or 3.1, Microsoft.Data.SqlClient, Version=1.12.20106.1