摘要： System.InvalidOperationException: Timeout expired.The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool size was reached.Timeout expired 异常是个很棘手的异常，想必几乎每个人都碰到过。有时可真是对它咬牙切齿，拿它没办法。 angelsb这篇文章很好，希望对大家有用。 阅读全文