for (var i = ; i < ; i++)

                {

                    var watch = new Stopwatch();

                    watch.Start();

                    using (var client = new StreamServiceClient())

                    {

                        var result = client.Upload(new StreamRequest

                        {

                            Bytes = data,

                            FileExt = ext,

                            Passport = ""

                        });

                        if (!string.IsNullOrEmpty(result.Msg))

                            MessageBox.Show(result.Msg);

                    }

                    watch.Stop();

                    this.richTextBox1.AppendText(string.Format("第{0}次：耗时：{1}\r\n\r\n", i, watch.ElapsedMilliseconds));

                }

for (var i = ; i < ; i++)

                {

                    var watch = new Stopwatch();

                    watch.Start();

                    var client = new StreamServiceClient();

                    {

                        var result = client.Upload(new StreamRequest

                        {

                            Bytes = data,

                            FileExt = ext,

                            Passport = ""

                        });

                        if (!string.IsNullOrEmpty(result.Msg))

                            MessageBox.Show(result.Msg);

                    }

                    watch.Stop();

                    this.richTextBox1.AppendText(string.Format("第{0}次：耗时：{1}\r\n\r\n", i, watch.ElapsedMilliseconds));

                }

/// <summary>

    /// IO服务通道

    /// by:jgl

    /// date:15-10-10

    /// </summary>

    public sealed class EmpIOChannelFacotry

    {

        private static readonly object LockObject = new object();

        private static StreamServiceClient client;

        public static StreamServiceClient Channel

        {

            get

            {

                lock (LockObject)

                {

                    var locaClient = client;

                    if (locaClient != null && locaClient.State != CommunicationState.Faulted) return locaClient;

                    client = new StreamServiceClient();

                    return client;

                }

            }

            set

            {

                lock (LockObject)

                {

                    if (client == null) return;

                    if (client.State != CommunicationState.Opened)

                        client.Abort();

                    client.Close();

                    client = value;

                }

            }

        }

    }