public override string ToString()
{
return new System.Text.StringBuilder("SessionState ")
.Append("[ Now=").Append(System.Environment.TickCount)
.Append(", HeartBtInt=").Append(this.HeartBtIntAsTickCount)
.Append(", LastSentTime=").Append(this.LastSentTimeTickCount)
.Append(", LastReceivedTime=").Append(this.LastReceivedTimeTickCount)
.Append(", TestRequestCounter=").Append(this.TestRequestCounter)
.Append(", WithinHeartbeat=").Append(WithinHeartbeat())
.Append(", NeedHeartbeat=").Append(NeedHeartbeat())
.Append(", NeedTestRequest=").Append(NeedTestRequest())
.Append(", ResendRange=").Append(GetResendRange())
.Append(" ]").ToString();
}