class EFIntercepterLogging : DbCommandInterceptor { private readonly Stopwatch _stopwatch = new Stopwatch(); public override void ScalarExecuting(System.Data.Common.DbCommand command, DbCommandInterceptionContext<object> interceptionContext) { base.ScalarExecuting(command, interceptionContext); _stopwatch.Restart(); } public override void ScalarExecuted(System.Data.Common.DbCommand command, DbCommandInterceptionContext<object> interceptionContext) { _stopwatch.Stop(); if (interceptionContext.Exception != null) { Trace.TraceError ("Exception:{1} --> Error executing command: {0}", command.CommandText, interceptionContext.Exception.ToString()); } else { Trace.TraceInformation(" 执行时间:{0} 毫秒 -->ScalarExecuted.Command:{1} ", _stopwatch.ElapsedMilliseconds, command.CommandText); } base.ScalarExecuted(command, interceptionContext); } }