/// <summary>    /// 抓取EF执行时的SQL语句    /// </summary>    public class EFIntercepterLogging : DbCommandInterceptor    {        private readonly Stopwatch _stopwatch = new Stopwatch();        public override void ScalarExecuting(DbCommand command, DbCommandInterceptionContext<object> interceptionContext)        {            base.ScalarExecuting(command, interceptionContext);            _stopwatch.Restart();        }        public override void ScalarExecuted(DbCommand command, DbCommandInterceptionContext<object> interceptionContext)        {            _stopwatch.Stop();            if (interceptionContext.Exception != null)            {                Trace.TraceError("Exception:{1} \r\n --> Error executing command: {0}", command.CommandText, interceptionContext.Exception.ToString());            }            else            {                Trace.WriteLine("线程：" + System.Threading.Thread.CurrentThread.ManagedThreadId);                Trace.TraceInformation("\r\n执行时间:{0} 毫秒\r\n-->ScalarExecuted.Command:{1}\r\n", _stopwatch.ElapsedMilliseconds, command.CommandText);            }            base.ScalarExecuted(command, interceptionContext);        }        public override void NonQueryExecuting(DbCommand command, DbCommandInterceptionContext<int> interceptionContext)        {            base.NonQueryExecuting(command, interceptionContext);            _stopwatch.Restart();        }        public override void NonQueryExecuted(DbCommand command, DbCommandInterceptionContext<int> interceptionContext)        {            _stopwatch.Stop();            if (interceptionContext.Exception != null)            {                Trace.TraceError("Exception:{1} \r\n --> Error executing command:\r\n {0}", command.CommandText, interceptionContext.Exception.ToString());            }            else            {                Trace.TraceInformation("\r\n执行时间:{0} 毫秒\r\n-->NonQueryExecuted.Command:\r\n{1}", _stopwatch.ElapsedMilliseconds, command.CommandText);            }            base.NonQueryExecuted(command, interceptionContext);        }        public override void ReaderExecuting(DbCommand command, DbCommandInterceptionContext<DbDataReader> interceptionContext)        {            //command.CommandText += " AND 1=1";            base.ReaderExecuting(command, interceptionContext);            _stopwatch.Restart();        }        public override void ReaderExecuted(DbCommand command, DbCommandInterceptionContext<DbDataReader> interceptionContext)        {            _stopwatch.Stop();            if (interceptionContext.Exception != null)            {                Trace.TraceError("Exception:{1} \r\n --> Error executing command:\r\n {0}", command.CommandText, interceptionContext.Exception.ToString());            }            else            {                Trace.WriteLine("线程：" + System.Threading.Thread.CurrentThread.ManagedThreadId);                Trace.TraceInformation("\r\n执行时间:{0} 毫秒 \r\n -->ReaderExecuted.Command:\r\n{1}", _stopwatch.ElapsedMilliseconds, command.CommandText);            }            base.ReaderExecuted(command, interceptionContext);        }    }

//EF监控DbInterception.Add(new EFIntercepterLogging());