How can I have different name for Config File in visual studio?

[pradipkumar]

I have a simple console app, there i have included a app.config file which is like below -

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
 
    <add key="x" value="member"/>
    <add key="y" value="srmember"/>
    <add key="z" value="srmember"/>
  </appSettings>
</configuration>

the file name was app.config once it included and in my class i was getting the correct value for the below code -

int no = System.Configuration.ConfigurationManager.AppSettings.Count;  [no=3]
 
but later I have changed the config file name from App.config to MyApp.config and the value for no got changed from 3 to 0.
I have gone through the example present here like below -
ExeConfigurationFileMap map = new ExeConfigurationFileMap();
            map.ExeConfigFilename = "C:\Users\abc...\MyApp.config";
            Configuration config = ConfigurationManager.OpenMappedExeConfiguration(map, ConfigurationUserLevel.None);
              int no = System.Configuration.ConfigurationManager.AppSettings.Count;
 

which doesn't help to solve. Please help.