blocks|key|2159008|text|以上都不是。您不需要调用Close或Dispose。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2159009|MemoryStream不持有任何非托管资源，因此唯一要回收的资源是内存。当您的代码不再引用MemoryStream时，内存将在垃圾回收期间与MemoryStream对象的其余部分一起回收。|2159010|如果您有一个对MemoryStream的长期引用，则可以将该引用设置为null，以允许对MemoryStream进行垃圾收集。Close和Dispose既不释放steam缓冲区，也不释放MemoryStream对象。|2159011|由于Stream和MemoryStream都没有终结器，因此不需要调用Close或Dispose来调用GC.SuppressFinalize来优化垃圾收集。没有要取消的终结器。|2159012|MemoryStream的文档是这样说的：|2159013|2159014|此类型实现IDisposable接口，但实际上没有任何资源可供处理。这意味着不需要通过直接调用Dispose()或使用语言结构(如using+(在C#中)或Using+(在Visual+Basic中))来处理它。|blockquote|2159015|2159016|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.microsoft.com/en-us/dotnet/api/system.io.memorystream^0|C|5|I|7|0|0|C|1A|C|1Z|C|0|7|C|18|C|1R|5|1X|7|2L|C|0|2|6|9|C|Z|5|15|7|1F|J|0|0|C|0|0|0|5|B|1B|9|1T|5|26|5|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|15|8|@$9|16|A|17|B|C]|$9|18|A|19|B|C]|$9|1A|A|1B|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|1C|8|@$9|1D|A|1E|B|C]|$9|1F|A|1G|B|C]|$9|1H|A|1I|B|C]|$9|1J|A|1K|B|C]|$9|1L|A|1M|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|1N|8|@$9|1O|A|1P|B|C]|$9|1Q|A|1R|B|C]|$9|1S|A|1T|B|C]|$9|1U|A|1V|B|C]|$9|1W|A|1X|B|C]]|D|@]|E|$]]|$1|L|3|M|5|6|7|1Y|8|@]|D|@$9|1Z|A|20|1|21]]|E|$]]|$1|N|3|-4|5|6|7|22|8|@]|D|@]|E|$]]|$1|O|3|P|5|Q|7|23|8|@$9|24|A|25|B|C]|$9|26|A|27|B|C]|$9|28|A|29|B|C]|$9|2A|A|2B|B|C]]|D|@]|E|$]]|$1|R|3|-4|5|6|7|2C|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|2D|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]]]

None of the above. You needn't call either <code>Close</code> or <code>Dispose</code>.

<code>MemoryStream</code> doesn't hold any unmanaged resources, so the only resource to be reclaimed is memory. The memory will be reclaimed during garbage collection with the rest of the <code>MemoryStream</code> object when your code no longer references the <code>MemoryStream</code>.

If you have a long-lived reference to the <code>MemoryStream</code>, you can set that reference to null to allow the <code>MemoryStream</code> to be garbage collected. <code>Close</code> and <code>Dispose</code> free neither the steam buffer nor the <code>MemoryStream</code> object proper.

Since neither <code>Stream</code> nor <code>MemoryStream</code> have a finalizer, there is no need to call <code>Close</code> or <code>Dispose</code> to cause <code>GC.SuppressFinalize</code> to be called to optimize garbage collection. There is no finalizer to suppress.

The docs for <a href="https://docs.microsoft.com/en-us/dotnet/api/system.io.memorystream" rel="noreferrer">MemoryStream</a> put it this way:

<blockquote>
 This type implements the <code>IDisposable</code> interface, but does not actually have any resources to dispose. This means that disposing it by directly calling <code>Dispose()</code> or by using a language construct such as <code>using</code> (in C#) or <code>Using</code> (in Visual Basic) is not necessary.
</blockquote>

blocks|key|90175|text|您可以使用using块来实现这一点。当超出其作用域时，它将自动调用Dispose。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|90176|示例：|90177|using+(MemoryStream+ms+=+new+MemoryStream())
{
++++//+Do+something+with+ms..
}
//+ms+is+disposed+here|code-block|syntax|javascript|90178|希望这能帮上忙。|90179|entityMap^0|5|5|X|7|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|W|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|X|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

You can use the <code>using</code> block for this. It will automatically call <code>Dispose</code> when it goes outside of its scope.

Example:

<pre><code>using (MemoryStream ms = new MemoryStream())
{
 // Do something with ms..
}
// ms is disposed here
</code></pre>

Hope this helped.

blocks|key|3755567|text|使用using块，以便在对象实现IDisposable接口时将其释放|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3755568|entityMap^0|2|5|G|B|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

Use <code>using</code> block so that your object is disposed if its implements <code>IDisposable</code> interface

blocks|key|2158748|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2158749|我该调用哪一个？|blockquote|2158750|2158751|2158752|他们中的任何一个。|2158753|2158754|是否有必要同时调用这两个函数？|2158755|2158756|2158757|不，任何一个都足够了。|2158758|2158759|如果我已经调用了其中的一个，另一个会抛出异常吗？|2158760|2158761|2158762|不，disposable模式声明对Dispose的后续调用不会产生负面影响。|2158763|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|X|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|Y|7|@]|8|@]|9|$]]|$1|D|3|-4|4|5|6|Z|7|@]|8|@]|9|$]]|$1|E|3|-4|4|5|6|10|7|@]|8|@]|9|$]]|$1|F|3|G|4|5|6|11|7|@]|8|@]|9|$]]|$1|H|3|-4|4|5|6|12|7|@]|8|@]|9|$]]|$1|I|3|J|4|C|6|13|7|@]|8|@]|9|$]]|$1|K|3|-4|4|5|6|14|7|@]|8|@]|9|$]]|$1|L|3|-4|4|5|6|15|7|@]|8|@]|9|$]]|$1|M|3|N|4|5|6|16|7|@]|8|@]|9|$]]|$1|O|3|-4|4|5|6|17|7|@]|8|@]|9|$]]|$1|P|3|Q|4|C|6|18|7|@]|8|@]|9|$]]|$1|R|3|-4|4|5|6|19|7|@]|8|@]|9|$]]|$1|S|3|-4|4|5|6|1A|7|@]|8|@]|9|$]]|$1|T|3|U|4|5|6|1B|7|@]|8|@]|9|$]]|$1|V|3|-4|4|5|6|1C|7|@]|8|@]|9|$]]]|W|$]]

<blockquote>
 Which one do I call?
</blockquote>

Any of them.

<blockquote>
 Is it necessary to call both?
</blockquote>

No, either one is sufficient.

<blockquote>
 Will the other throw an exception if I have already called one of them?
</blockquote>

No, disposable pattern declares that subsequent calls to Dispose don't cause negative effects.

blocks|key|2158697|text|下面的代码是来自reflector的Stream.Dispose，正如你所看到的，如果你使用dispose，你不需要关闭(这在使用时是隐含的)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2158698|public+void+Dispose()
{
++++this.Close();
}|code-block|syntax|javascript|2158699|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

the following code is Stream.Dispose from reflector as you can see, you don't need to close if you dispose (which is implicit when using using)

<pre><code>public void Dispose()
{
 this.Close();
}
</code></pre>

blocks|key|2158614|text|调用Close()将在内部调用Dispose()来释放资源。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2158615|有关更多信息，请参阅此链接：msdn|offset|length|2158616|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.io.stream.close.aspx^0|0|E|4|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

Calling Close() will internally call Dispose() to release the resources.

See this link for more information:
<a href="http://msdn.microsoft.com/en-us/library/system.io.stream.close.aspx" rel="nofollow">msdn</a>

blocks|key|2158675|text|只调用Dispose()就行了=)|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2158676|entityMap^0|3|9|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

Calling only <code>Dispose()</code> will do the trick =)

blocks|key|2158828|text|在.NET+3.5+(还没有检查其他版本)中，在部署MemoryStream时，方法是按以下顺序调用的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2158829|2158830|Stream.Dispose()+|ordered-list-item|2158831|只需调用Close|unordered-list-item|2158832|2158833|2158834|​|2158835|2158836|Stream.Close()+|2158837|调用Dispose(true)，然后调用GC.SuppressFinalize(this)|2158838|2158839|2158840|2158841|2158842|MemoryStream.Dispose(true)+|2158843|将_isOpen、_writable和_expandable标志设置为false|2158844|2158845|2158846|2158847|如果为active，|2158848|Stream.Dispose(true)+|2158849|将关闭异步事件|2158850|2158851|2158852|2158853|entityMap^0|0|0|1|1|0|0|0|0|1|1|0|0|0|0|1|1|0|0|0|0|1|1|0|0|0^^$0|@$1|2|3|4|5|6|7|1D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|1F|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|1G|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|1H|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|1J|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]|$1|N|3|O|5|E|7|1L|8|@]|9|@]|A|$]]|$1|P|3|Q|5|H|7|1M|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|1N|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1O|8|@]|9|@]|A|$]]|$1|T|3|L|5|6|7|1P|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|V|3|W|5|E|7|1R|8|@]|9|@]|A|$]]|$1|X|3|Y|5|H|7|1S|8|@]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|1T|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|1U|8|@]|9|@]|A|$]]|$1|11|3|L|5|6|7|1V|8|@]|9|@]|A|$]]|$1|12|3|13|5|6|7|1W|8|@]|9|@]|A|$]]|$1|14|3|15|5|E|7|1X|8|@]|9|@]|A|$]]|$1|16|3|17|5|H|7|1Y|8|@]|9|@]|A|$]]|$1|18|3|-4|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|19|3|-4|5|6|7|20|8|@]|9|@]|A|$]]|$1|1A|3|L|5|6|7|21|8|@]|9|@]|A|$]]|$1|1B|3|-4|5|6|7|22|8|@]|9|@]|A|$]]]|1C|$]]

In .NET 3.5 (haven't checked other versions), methods are called in the following order when disposing a MemoryStream:

<ol>
<li>Stream.Dispose() 
<ul>
<li>simply calls Close</li>
</ul></li>
<li>Stream.Close()
<ul>
<li>calls Dispose(true), then GC.SuppressFinalize(this)</li>
</ul></li>
<li>MemoryStream.Dispose(true)
<ul>
<li>sets _isOpen , _writable, and _expandable flags to false</li>
</ul></li>
<li>Stream.Dispose(true)
<ul>
<li>closes async event if active</li>
</ul></li>
</ol>

blocks|key|1396928|text|作为第一个解决方案，建议尽可能使用using语句。这在这里描述：http://msdn.microsoft.com/en-us/library/yh598w02.aspx|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1396929|1396930|当IDisposable对象的生存期仅限于单个方法时，应在using语句中声明并实例化它。using语句以正确的方式调用对象上的Dispose方法，并且(当您如前所述使用该方法时)一旦调用Dispose，它还会导致对象本身超出作用域。在using块中，对象是只读的，不能修改或重新分配。|blockquote|style|BOLD|1396931|1396932|1396933|现在来看问题，正如其他人在大多数.NET框架类中所建议的那样，Close()和Dispose()之间没有区别，您调用这两个方法中的哪一个并不重要。您应该调用其中一个，但不能同时调用两个。但是，也有例外。|1396934|Dispose也有例外；例如，System.Windows.Forms.Form和System.Data.SqlClient.SqlConnection对|1396935|+()和Dispose()有不同的行为。|1396936|1396937|1396938|有关完整的详细信息，请查看此处：https://blogs.msdn.microsoft.com/kimhamil/2008/03/15/the-often-non-difference-between-close-and-dispose/|1396939|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/yh598w02.aspx|1|https://blogs.msdn.microsoft.com/kimhamil/2008/03/15/the-often-non-difference-between-close-and-dispose/^0|W|1H|0|0|0|39|Q|0|0|0|0|0|0|0|0|G|2W|1|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@$A|16|B|17|1|18]]|C|$]]|$1|D|3|-4|5|6|7|19|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|1A|8|@$A|1B|B|1C|H|I]]|9|@]|C|$]]|$1|J|3|-4|5|6|7|1D|8|@]|9|@]|C|$]]|$1|K|3|-4|5|6|7|1E|8|@]|9|@]|C|$]]|$1|L|3|M|5|6|7|1F|8|@]|9|@]|C|$]]|$1|N|3|O|5|6|7|1G|8|@]|9|@]|C|$]]|$1|P|3|Q|5|G|7|1H|8|@]|9|@]|C|$]]|$1|R|3|-4|5|6|7|1I|8|@]|9|@]|C|$]]|$1|S|3|-4|5|6|7|1J|8|@]|9|@]|C|$]]|$1|T|3|U|5|6|7|1K|8|@]|9|@$A|1L|B|1M|1|1N]]|C|$]]|$1|V|3|-4|5|6|7|1O|8|@]|9|@]|C|$]]]|W|$X|$5|Y|Z|10|C|$11|12]]|13|$5|Y|Z|10|C|$11|14]]]]

As a first solution, it's recommended to use using statements wherever possible. This is described here: <a href="http://msdn.microsoft.com/en-us/library/yh598w02.aspx" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/yh598w02.aspx</a>

<blockquote>
 When the lifetime of an IDisposable object is limited to a single method, you should declare and instantiate it in the using statement. The using statement calls the Dispose method on the object in the correct way, and (when you use it as shown earlier) it also causes the object itself to go out of scope as soon as Dispose is called. Within the using block, the object is read-only and cannot be modified or reassigned.
</blockquote>

Coming to the question now, as others suggested in most .NET framework classes, there is no difference between Close() and Dispose() and it doesn't matter which of the two methods you call. You should call one but not both. However, there are exceptions.

<blockquote>
 There are exceptions; for example, System.Windows.Forms.Form and System.Data.SqlClient.SqlConnection have different behavior for Close() and Dispose().
</blockquote>

For complete details, you can check here: <a href="https://blogs.msdn.microsoft.com/kimhamil/2008/03/15/the-often-non-difference-between-close-and-dispose/" rel="nofollow noreferrer">https://blogs.msdn.microsoft.com/kimhamil/2008/03/15/the-often-non-difference-between-close-and-dispose/</a>

Which one do I call?

Is it necessary to call both?

Will the other throw an exception if I have already called one of them?

MemoryStream.Close() or MemoryStream.Dispose()

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我该打给哪一个？是否有必要同时调用这两个函数？如果我已经调用了它们中的一个，另一个会抛出异常吗？

问MemoryStream.Close()或MemoryStream.Dispose()
EN

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