What's wrong with my connection string (can not access it through ConfiguratioManager)? - connection-string

Question

I'm trying to connect to Azure SQL, but I get error The underlying provider failed on Open
I discovered that I have put connection string in the wrong app.config - moved it to the executable project's app.config, but still the same result
When I check ConfigurationManager.ConnectionStrings["AzureDatabase"] it returns null. And when I try to connect it just uses default SQLExpress.
When I check build folder of my executable application - there is an <app_name>.exe.config file with "AzureDatabase". I'm stuck on where to search from here
This is my DbContext class
[DbConfigurationType(typeof(AzureDbConfiguration))]
public class ProductDbContext : DbContext
{
//Db sets
static MyContext()
{
//I don't want to change database from code
Database.SetInitializer<MyContext>(null);
}
public MyContext() : base("AzureDatabase") //this is my connectionstring
{
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
//some mappings
}
}
This is AzureDbConfiguration
public class AzureDbConfiguration : DbConfiguration
{
public AzureDbConfiguration()
{
SetExecutionStrategy("System.Data.SqlClient", () => new SqlAzureExecutionStrategy(2, TimeSpan.FromSeconds(10)));
}
}
This is my app.config file
<?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" />
</configSections>
<connectionStrings>
<add name="AzureDatabase"
connectionString="Server=tcp:xxx.database.windows.net,1433;Initial Catalog=xxx;Persist Security Info=False;User ID=xxxx;Password=xxxxx;MultipleActiveResultSets=False;Encrypt=True;TrustServerCertificate=False;Connection Timeout=30;" providerName="System.Data.SqlClient"/>
</connectionStrings>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="mssqllocaldb" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
</startup>
</configuration>
Any ideas on what's wrong here?

Answer 1

It turns out the problem was that I was trying to work with app.config from Class library (I was trying to create an integration tests)
One of potential solutions is to create a separate settings file for Class library. You can read about it in this StackOverflow post