/**********************************************************************
?*?Copyright???2009?2010?2011?2012?OPC?Foundation?Inc.?
?*
?*?The?source?code?and?all?binaries?built?with?the?OPC?.NET?3.0?source
?*?code?are?subject?to?the?terms?of?the?Express?Interface?Public
?*?License?（Xi-PL）.??See?http://www.opcfoundation.org/License/Xi-PL/
?*
?*?The?source?code?may?be?distributed?from?an?OPC?member?company?in
?*?its?original?or?modified?form?to?its?customers?and?to?any?others?who
?*?have?software?that?needs?to?interoperate?with?the?OPC?member‘s?OPC
*?.NET?3.0?products.?No?other?redistribution?is?permitted.
?*
?*?You?must?not?remove?this?notice?or?any?other?from?this?software.
?*
?*********************************************************************/

using?System;
using?System.ServiceModel;

namespace?Xi.Common.Support
{
	///?

	///?This?class?is?used?to?properly?close?a?WCF?client?proxy.??It?aborts?or?closes
	///?the?proxy?based?on?the?channel?status?and?whether?an?exception?is?encountered.
	///?It?has?two?calling?methods?one?where?the?proxy?has?a?short?life?and?the?other
	///?to?be?used?when?the?proxy?is?held?over?the?life?of?a?single?method.
	///?

	///?
	///?Usage?1:?Short?lived?proxy
	///?void?SomeMethod（）
	///?{
	///?????SomeWcfProxy?proxy?=?new?SomeWcfProxy（）;
	///?????using?（new?ChannelCloser（proxy））
	///?????{
	///????????proxy.MakeCall（）;
	///?????????...
	///?????}
	///?}
	///?
	///?Usage?2:?Long?lived?proxy
	///?void?CreateProxy（）
	///?{
	///?????SomeWcfProxy?proxy?=?new?SomeWcfProxy（）;
	///?????...
	///?}
	///?void?DestroyProxy（）
	///?{
	///????ChannelCloser.Close（proxy）;
	///?}
	///?
	public?class?ChannelCloser?:?IDisposable
	{
		private?readonly?ICommunicationobject?_channel;

		///?

		///?Constructs?a?WCF?channel?closer?object
		///?

		///?WCF?proxy?object
		public?ChannelCloser（object?channelObj）
		{
			if?（!（channelObj?is?ICommunicationobject））
				throw?new?ArgumentException（“Channel?object?must?implement?ICommunicationobject“）;
			_channel?=?（ICommunicationobject）channelObj;
		}

		///?

		///?Properly?releases?and?closes?the?held?WCF?proxy
		///?

		public?void?Dispose（）
		{
			Close（_channel）;
		}

		///?

		///?This?method?closes?the?passed?proxy?object
		///?

		///?
		public?static?void?Close（object?obj）
		{
			if?（obj?!=?null）
			{
				var?channelObj?=?obj?as?ICommunicationobject;
				if?（channelObj?==?null）
					throw?new?ArgumentException（“Channel?object?must?implement?ICommunicationobject“?“obj“）;

				//?if?the?channel?faults?you?cannot?Close/Dispose?it?-?instead?you?have?to?Abort?it
				if?（channelObj.State?==?CommunicationState.Faulted）
					channelObj.Abort（）;
				else?if?（channelObj.State?!=?CommunicationState.Closed）
				{
					try
					{
						channelObj.Close（）;
					}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2012-09-06?15:02??Xi?Contracts\Data\
?????文件????????2551??2012-09-06?11:33??Xi?Contracts\Data\AddDataobjectResult.cs
?????文件????????3106??2012-09-06?11:33??Xi?Contracts\Data\AlarmCondition.cs
?????文件????????2444??2012-09-06?11:33??Xi?Contracts\Data\AlarmDescription.cs
?????文件????????1479??2012-09-06?11:33??Xi?Contracts\Data\AlarmEnabledState.cs
?????文件????????2377??2012-09-06?11:33??Xi?Contracts\Data\AlarmMessageData.cs
?????文件????????2245??2012-09-06?11:33??Xi?Contracts\Data\AlarmState.cs
?????文件????????4931??2012-09-06?11:33??Xi?Contracts\Data\AlarmSummary.cs
?????文件????????1410??2012-09-06?11:33??Xi?Contracts\Data\AliasAndCalculation.cs
?????文件????????2115??2012-09-06?11:33??Xi?Contracts\Data\AliasResult.cs
?????文件????????1957??2012-09-06?11:33??Xi?Contracts\Data\AliasUpdate.cs
?????文件????????3374??2012-09-06?11:33??Xi?Contracts\Data\CategoryConfiguration.cs
?????文件????????1924??2012-09-06?11:33??Xi?Contracts\Data\DataJournalOptions.cs
?????文件????????1402??2012-09-06?11:33??Xi?Contracts\Data\DataJournalWriteResult.cs
?????文件???????16674??2012-09-06?11:33??Xi?Contracts\Data\DataValueArrays.cs
?????文件???????11523??2012-09-06?11:33??Xi?Contracts\Data\DataValueArraysWithAlias.cs
?????文件????????4455??2012-09-06?11:33??Xi?Contracts\Data\EndpointConfiguration.cs
?????文件????????2419??2012-09-06?11:33??Xi?Contracts\Data\EndpointConfigurationEx.cs
?????文件????????3071??2012-09-06?11:33??Xi?Contracts\Data\EndpointDefinition.cs
?????文件????????6029??2012-09-06?11:33??Xi?Contracts\Data\ErrorInfo.cs
?????文件????????2870??2012-09-06?11:33??Xi?Contracts\Data\EventId.cs
?????文件????????1436??2012-09-06?11:33??Xi?Contracts\Data\EventIdResult.cs
?????文件????????4744??2012-09-06?11:33??Xi?Contracts\Data\EventMessage.cs
?????文件????????2206??2012-09-06?11:33??Xi?Contracts\Data\EventMessageField.cs
?????文件????????3677??2012-09-06?11:33??Xi?Contracts\Data\EventType.cs
?????文件????????4774??2012-09-06?11:33??Xi?Contracts\Data\FilterCriterion.cs
?????文件????????3792??2012-09-06?11:33??Xi?Contracts\Data\FilterSet.cs
?????文件????????3201??2012-09-06?11:33??Xi?Contracts\Data\FindCriteria.cs
?????文件???????14513??2012-09-06?11:33??Xi?Contracts\Data\InstanceId.cs
?????文件????????2378??2012-09-06?11:33??Xi?Contracts\Data\JournalDataChangedValues.cs
?????文件????????1799??2012-09-06?11:33??Xi?Contracts\Data\JournalDataPropertyValue.cs
............此處省略164個文件信息