![Исключение system exception. Object reference not set to an instance of an object. system.nullreferenceexception: 'object reference not set to an instance of an object.'. nullreferenceexception: object reference not set to an instance of an object. object reference not set to an instance of an object [system.nullreferenceexception] details: no details.](https://i.sstatic.net/gIDvs.png "Object reference not set to an instance of an object. system.nullreferenceexception: 'object reference not set to an instance of an object.'. nullreferenceexception: object reference not set to an instance of an object. object reference not set to an instance of an object [system.nullreferenceexception] details: no details.")
Исключение system exception. Object reference not set to an instance of an object. system.nullreferenceexception: 'object reference not set to an instance of an object.'. nullreferenceexception: object reference not set to an instance of an object. object reference not set to an instance of an object [system.nullreferenceexception] details: no details.