SqlException: Exists assigned to this command Command an open DataReader?

There is a library. It implements methods select, insert and so on.
In the client application doing the insert and then select. All without any problems.
Further, no matter what the request I did generates an InvalidOperationException with the message "Exists assigned to this command Command an open DataReader that you want to pre-close."
September 18th 19 at 23:47
2 answers
September 18th 19 at 23:49
Just A DataReader.Close() did not.
September 18th 19 at 23:51
Can someone come in handy, if you are using DataAdapter, then a copy should be created for each individual stream
a good recommendation - jovanny.Cro commented on September 18th 19 at 23:54

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