Dereference of a possibly null reference.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

The variable 'ddddd' is assigned but its value is never used

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Non-nullable field 'bj' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.

Non-nullable field 'bi' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.

Non-nullable field '_StrStrInTest4' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.