C # SQL Server database connection, and resolve "DataReader associated with this Command is already open, you must first shut it down." - Code World

C # SQL Server database connection, and resolve "DataReader associated with this Command is already open, you must first shut it down."

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Origin www.cnblogs.com/domefy/p/12173436.html

C # SQL Server database connection, and resolve "DataReader associated with this Command is already open, you must first shut it down."

System.InvalidOperationException: the existing open DataReader associated with this Command, you must first shut it down. ...

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