Background: We are in the process of migrating .Net application to .Net Core. As a strategy, we would like to keep the existing functionality intact on Full framework while migrating portion of the application to .Net Core. Full application would support .services over Net remoting and REST API whereas .Net core application will only support REST API services. We have decided to keep the same code base for entire application and support compilation on multiple platforms (NetcoreApp2.1 and Net472). There is a single application configuration file. Most of the components are dependent on the information stored in this file. Thus we would like to retain the single configuration file for both platforms. I used System.Configuration.ConfigurationManager package to access configuration information.
Issue: ConfigurationManager.GetSection(string) throws exception on .Net core platform whereas it works fine on Net472. Error Message: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException: Unrecognized configuration section system.runtime.remoting
Work around tried so far: ConfigurationManager.OpenExeConfiguration(configurationUserLevel).GetSection(string) works perfect on both the platforms for fetching the same section
Sample Code:
static MyConfigurationSection myConfigurationSettings { get; set; }
static void Main(string[] args)
{
LoadSettings();
}
private static void LoadSettings()
{
try
{
//Net472 : Works
//NetCoreApp2.1: Throws exception
myConfigurationSettings = ConfigurationManager.GetSection("myCustomSettings") as MyConfigurationSection;
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
//Works on both platform
myConfigurationSettings = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.PerUserRoamingAndLocal).GetSection("myCustomSettings") as MyConfigurationSection;
Console.WriteLine(myConfigurationSettings.Applications.Count);
Console.ReadLine();
}
Here is configuration file
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="myCustomSettings" type="TestConfigManager.MyConfigurationSection, TestConfigManager" />
</configSections>
<myCustomSettings>
<applications/>
</myCustomSettings>
<system.runtime.remoting>
<application>
<channels>
<channel ref="tcp" port="1111" />
</channels>
</application>
</system.runtime.remoting>
</configuration>