DataReader already active on this command

[lxa520]

2022/8/17 9:01:41: System.InvalidOperationException: DataReader already active on this command
在 System.Data.SQLite.SQLiteCommand.InitializeForReader()
在 System.Data.SQLite.SQLiteCommand.ExecuteReader(CommandBehavior behavior)
在 System.Data.SQLite.SQLiteCommand.ExecuteDbDataReader(CommandBehavior behavior)
在 System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior)
在 System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
在 System.Data.Common.DbDataAdapter.Fill(DataTable[] dataTables, Int32 startRecord, Int32 maxRecords, IDbCommand command, CommandBehavior behavior)
在 System.Data.Common.DbDataAdapter.Fill(DataTable dataTable)
在 System.Data.SQLite.SQLiteHelper.Select(String sql, IEnumerable1 parameters) 在 System.Data.SQLite.SQLiteHelper.Select(String sql, Dictionary2 dicParameters)
在 ActiveServer.MainForm.sptMain_DataReceived(Object sender, SerialDataReceivedEventArgs e)