The console app.config is invalid

Problem Description:

When serializing a large number of JSON we should add the <add key= "Aspnet:maxhttpcollectionkeys" value= "10000"/> node in web.config, otherwise it will be an error: Operation is Not valid due to the current state of the object. See: http://blog.csdn.net/lxy1106/article/details/42392441. However, if the program is a console program, or Windows Service, or Winfrom program to join the Aspnet:maxhttpcollectionkeys does not work, I do not know why.

Please answer the master ...