blocks|key|3025159|text|您可以使用System.Diagnoistic.Debugger.Break()方法实现其目的，如下所示|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3025160|if(x!=+y)
++++Debugger.Break()|code-block|syntax|javascript|3025161|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|$]]

You can use System.Diagnoistic.Debugger.Break() method for its purpose as follows

<pre><code>if(x!= y)
 Debugger.Break()
</code></pre>

blocks|key|3025249|text|右键单击代表断点的红点-如果希望断点中断执行，请选择Condition并输入expression，或者选中Has+changed以在值发生更改时中断。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3025250|entityMap^0|Q|9|1H|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|$]]

Right click the red dot that represents the breakpoint - choose <code>Condition</code> and enter expression when you want the breakpoint to break the execution, or check <code>Has changed</code> to break whenever the value changes.

blocks|key|298928|text|如果您可以控制声明属性的代码，那么当然可以在setter中设置断点。即使它当前是一个自动实现的属性，例如：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|298929|public+string+SomeProperty+{+get;+set;+}|code-block|syntax|javascript|298930|您可以像这样轻松地更改它：|298931|private+string+_someProperty;
public+string+SomeProperty+{
++++get+{+return+_someProperty;+}
++++set+{
++++++++//+Set+breakpoint+here,+or+type+Debugger.Break();
++++++++_someProperty+=+value;
++++}
}|298932|如果值实际上是字段而不是属性，您仍然可以将其更改为属性以实现相同的功能。|298933|如果你不能访问声明属性的代码，那么它就会变得相当困难。就我个人而言，我所做的是这样的，但这有点费力：|298934|298935|在程序中声明property.|ordered-list-item|298936|Early类型的Program类中声明一个公共静态字段，找到一个对属性值发生更改的对象的引用，并将该引用放入此静态字段中。如有必要，请使用反射来检索私有字段。|offset|length|style|CODE|298937|在对代码执行debugging.|298938|Step操作时将global::MyNamespace.Program.MyField.ImportantProperty添加到监视窗口，直到监视窗口中的值发生更改。|298939|298940|entityMap^0|0|0|0|0|0|0|0|0|8|7|0|0|8|1H|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|16|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|17|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|18|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|19|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|1A|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|P|3|Q|5|R|7|1C|8|@]|9|@]|A|$]]|$1|S|3|T|5|R|7|1D|8|@$U|1E|V|1F|W|X]]|9|@]|A|$]]|$1|Y|3|Z|5|R|7|1G|8|@]|9|@]|A|$]]|$1|10|3|11|5|R|7|1H|8|@$U|1I|V|1J|W|X]]|9|@]|A|$]]|$1|12|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]|$1|13|3|-4|5|6|7|1L|8|@]|9|@]|A|$]]]|14|$]]

If you have control over the code that declares the property, then certainly you can put a breakpoint inside the setter. Even if it is currently an auto-implemented property, e.g.:

<pre><code>public string SomeProperty { get; set; }
</code></pre>

you can easily change it like this:

<pre><code>private string _someProperty;
public string SomeProperty {
 get { return _someProperty; }
 set {
 // Set breakpoint here, or type Debugger.Break();
 _someProperty = value;
 }
}
</code></pre>

If the value is actually a field instead of a property, you can still change it into a property to achieve the same thing.

If you don’t have access to the code that declares the property, then it’s quite a bit harder. Personally what I do is this, but it’s a bit laborious:

<ol>
<li>Declare a public static field in your <code>Program</code> class of the type that declares the property.</li>
<li>Early in the program, find a reference to the object whose property value changes and put that reference in this static field. If necessary, use Reflection to retrieve private fields.</li>
<li>Add <code>global::MyNamespace.Program.MyField.ImportantProperty</code> to the Watch window while debugging.</li>
<li>Step through the code until the value in the watch window changes.</li>
</ol>

blocks|key|298391|text|这听起来像是你在请求一个特性，这个特性会导致Visual+Studio在对象上的属性/字段发生变化时中断。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|298392|对于属性，可以使用普通断点和条件断点执行此操作。只需在属性设置器上设置断点，右键单击并选择conditional。然后添加一个简单的检查，以查看新值和现有值是否不同|298393|value+!=+backingField|code-block|syntax|javascript|298394|对于字段，确实没有好的解决方案。C%2B%2B调试器有一个称为Data+BreakPoints的特性，它就具有这种行为。但它们不适用于托管语言，主要是因为CLR调试器不支持它们。您能做的最好的事情就是暂时将您的字段更改为一个属性，然后使用上述方法。|298395|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

It sounds like you're asking for a feature that would cause Visual Studio to break whenever a property / field is changed on an object. 

For properties you can do this with normal breakpoints and a conditional. Simply set the breakpoint on the property setter, right click and select conditional. Then add a simple check to see if the new value and existing value are different

<pre><code>value != backingField
</code></pre>

For fields there really is no good solution. The C++ debugger has a feature called Data BreakPoints which have exactly this behavior. But they are not available for managed languages, primarily because the CLR debugger does not support them. The best you can do is temporarily change your field to a property and use the above method.

blocks|key|298971|text|我不认为在VS+IDE中有一种方法可以让您设置这样的通用断点。如果您确实需要这样做，并且愿意进行一些代码更改，那么可以看看partial+methods。使用分部方法，您可以定义一个分部方法并从setter中调用它。当您想要调试以找出谁在调用setter时，您可以提供partial方法的一个虚拟实现。当您完成调试后，您可以摆脱实现，编译器将不会生成与该方法相关的任何内容，就好像它不存在一样。这会污染您的代码，除非您能想到来自setter的分部方法调用的其他潜在用途。然而，我只是想把它放在那里，让你知道。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|298972|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/wa80x488.aspx^0|1P|F|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

I don't think that there is a way in VS IDE that allows you to set a general breakpoint like that. If you really need this and willing to do some code changes, you can take a look at <a href="http://msdn.microsoft.com/en-us/library/wa80x488.aspx" rel="nofollow noreferrer">partial methods</a>. Using partial methods, you define a partial method and call it from your setters. When you want to debug to find out who's calling a setter, you can provide a dummy implementation of the partial method. When you are done debugging, you can get rid of the implementation and the compiler will not generate anything related to that method as if it did not exist. This pollutes your code unless you can think of other potential uses of a partial method call from your setters. However, I just wanted to throw it out there so that you know.

Is it possible in Visual Studio 2010 to break on anything (a method for example) that changes an object's property?

Or is it possible to find out if object properties changed in an ASP.NET Webforms application?

<hr>

Update: 

Correct answer can be found at: <a href="http://stackoverflow.com/questions/2682613/cant-set-breakpoints-on-an-auto-property-setter-why/6713920#6713920">http://stackoverflow.com/questions/2682613/cant-set-breakpoints-on-an-auto-property-setter-why/6713920#6713920</a>

Visual Studio 2010 - Break on anything that changes an object property

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在Visual Studio2010中，是否有可能中断任何更改对象属性的操作(例如，一个方法)？或者，是否可以找出ASP.NET Webforms应用程序中的对象属性是否发生了更改？更新：正确答案请访问：

问Visual Studio 2010 -中断任何更改对象属性的操作
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