blocks|key|350349|text|不确定它在您的场景中将如何工作，但您可以使用ObjectDataProvider上的MethodName属性让它调用特定的方法(使用MethodParameters属性的特定参数)来检索其数据。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|350350|下面是直接取自MSDN页面的代码片段：|350351|<Window.Resources>
++++<ObjectDataProvider+ObjectType="{x:Type+local:TemperatureScale}"
++++++++MethodName="ConvertTemp"+x:Key="convertTemp">
++++++++<ObjectDataProvider.MethodParameters>
++++++++++++<system:Double>0</system:Double>
++++++++++++<local:TempType>Celsius</local:TempType>
++++++++</ObjectDataProvider.MethodParameters>
++++</ObjectDataProvider>
</Window.Resources>|code-block|syntax|javascript|350352|这是一个ObjectDataProvider，它调用TemperatureScale类实例上的ConvertTemp方法，传递两个参数(0和TempType.Celsius)。|350353|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.windows.data.objectdataprovider.methodname.aspx^0|M|I|16|A|1U|G|16|A|0|0|0|0|4|I|Q|G|1B|B|1W|1|1Y|G|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@$9|13|A|14|1|15]]|E|$]]|$1|F|3|G|5|6|7|16|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|17|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|18|8|@$9|19|A|1A|B|C]|$9|1B|A|1C|B|C]|$9|1D|A|1E|B|C]|$9|1F|A|1G|B|C]|$9|1H|A|1I|B|C]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|1J|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

Not sure how well it will work in your scenario, but you can use the <a href="http://msdn.microsoft.com/en-us/library/system.windows.data.objectdataprovider.methodname.aspx" rel="nofollow noreferrer"><code>MethodName</code></a> property on <code>ObjectDataProvider</code> to have it call a specific method (with specific parameters of you <code>MethodParameters</code> property) to retrieve its data.

Here's a snippet taken directly from the MSDN page:

<pre><code>&lt;Window.Resources&gt;
 &lt;ObjectDataProvider ObjectType="{x:Type local:TemperatureScale}"
 MethodName="ConvertTemp" x:Key="convertTemp"&gt;
 &lt;ObjectDataProvider.MethodParameters&gt;
 &lt;system:Double&gt;0&lt;/system:Double&gt;
 &lt;local:TempType&gt;Celsius&lt;/local:TempType&gt;
 &lt;/ObjectDataProvider.MethodParameters&gt;
 &lt;/ObjectDataProvider&gt;
&lt;/Window.Resources&gt;
</code></pre>

So that's an <code>ObjectDataProvider</code> that's calling a <code>ConvertTemp</code> method on an instance of a <code>TemperatureScale</code> class, passing two parameters (<code>0</code> and <code>TempType.Celsius</code>).

blocks|key|3343535|text|你必须绑定到这个方法吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3343536|你能绑定到一个方法是getter的属性吗？|3343537|public+ObservableCollection<ChildObject>+Children
{
+++get
+++{
++++++return+GetChildren();
+++}
}|code-block|syntax|javascript|3343538|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Do you have to bind to the method?

Can you bind to a property who's getter is the method?

<pre><code>public ObservableCollection&lt;ChildObject&gt; Children
{
 get
 {
 return GetChildren();
 }
}
</code></pre>

blocks|key|3130720|text|除非您可以添加一个属性来调用该方法(或者创建一个添加该属性的包装类)，否则我所知道的惟一方法就是使用ValueConverter。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3130721|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Unless you can add a property to call the method (or create a wrapper class that adds that property) the only way I know of is using a ValueConverter.

blocks|key|3343567|text|ObjectDataProvider还具有可替代ObjectType使用的ObjectInstance属性|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3343568|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

ObjectDataProvider also has an ObjectInstance property that can be used instead of ObjectType

blocks|key|3130749|text|可以使用System.ComponentModel动态定义类型的属性(它们不是已编译的元数据的一部分)。我在WPF中使用了这种方法来启用绑定到将其值存储在字段中的类型，因为绑定到字段是不可能的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3130750|ICustomTypeDescriptor和TypeDescriptionProvider类型可能允许您实现您想要的内容。根据this+article的说法|3130751|3130752|+TypeDescriptionProvider允许您编写实现ICustomTypeDescriptor的单独类，然后将该类注册为其他类型的描述提供程序。|blockquote|3130753|3130754|3130755|我自己还没有尝试过这种方法，但我希望它对您的情况有所帮助。|3130756|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.componentmodel.icustomtypedescriptor.aspx|1|http://msdn.microsoft.com/en-us/library/system.componentmodel.typedescriptionprovider.aspx|2|http://msdn.microsoft.com/en-us/magazine/cc163804.aspx^0|4|L|0|0|L|M|N|0|L|0|M|N|1|1R|C|2|0|0|1|N|V|L|0|0|0|0^^$0|@$1|2|3|4|5|6|7|11|8|@$9|12|A|13|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|14|8|@$9|15|A|16|B|C]|$9|17|A|18|B|C]]|D|@$9|19|A|1A|1|1B]|$9|1C|A|1D|1|1E]|$9|1F|A|1G|1|1H]]|E|$]]|$1|H|3|-4|5|6|7|1I|8|@]|D|@]|E|$]]|$1|I|3|J|5|K|7|1J|8|@$9|1K|A|1L|B|C]|$9|1M|A|1N|B|C]]|D|@]|E|$]]|$1|L|3|-4|5|6|7|1O|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|1P|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|1Q|8|@]|D|@]|E|$]]|$1|P|3|-4|5|6|7|1R|8|@]|D|@]|E|$]]]|Q|$R|$5|S|T|U|E|$V|W]]|X|$5|S|T|U|E|$V|Y]]|Z|$5|S|T|U|E|$V|10]]]]

You can use <code>System.ComponentModel</code> to define properties for a type dynamically (they're not part of the compiled metadata). I used this approach in WPF to enable binding to a type that stored its values in fields, as binding to fields is not possible.

The <a href="http://msdn.microsoft.com/en-us/library/system.componentmodel.icustomtypedescriptor.aspx" rel="nofollow noreferrer"><code>ICustomTypeDescriptor</code></a> and <a href="http://msdn.microsoft.com/en-us/library/system.componentmodel.typedescriptionprovider.aspx" rel="nofollow noreferrer"><code>TypeDescriptionProvider</code></a> types might allow you to achieve what you want. According to <a href="http://msdn.microsoft.com/en-us/magazine/cc163804.aspx" rel="nofollow noreferrer">this article</a>:

<blockquote>
 <code>TypeDescriptionProvider</code> allows you to write a separate class that implements <code>ICustomTypeDescriptor</code> and then to register this class as the provider of descriptions for other types.
</blockquote>

I haven't tried this approach myself, but I hope it's helpful in your case.

blocks|key|3343644|text|另一种可能适用于您的方法是创建一个以方法名作为参数的自定义IValueConverter，这样它就可以像这样使用：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3343645|ItemsSource="{Binding+
++++Converter={StaticResource+MethodToValueConverter},
++++ConverterParameter='GetChildren'}"|code-block|syntax|javascript|3343646|此转换器将使用反射查找并调用该方法。这要求方法不能有任何参数。|3343647|下面是一个这样的转换器源代码的例子：|3343648|public+sealed+class+MethodToValueConverter+:+IValueConverter
{
++++public+object+Convert(object+value,+Type+targetType,+object+parameter,+CultureInfo+culture)
++++{
++++++++var+methodName+=+parameter+as+string;
++++++++if+(value==null+%7C%7C+methodName==null)
++++++++++++return+value;
++++++++var+methodInfo+=+value.GetType().GetMethod(methodName,+new+Type[0]);
++++++++if+(methodInfo==null)
++++++++++++return+value;
++++++++return+methodInfo.Invoke(value,+new+object[0]);
++++}

++++public+object+ConvertBack(object+value,+Type+targetType,+object+parameter,+CultureInfo+culture)
++++{
++++++++throw+new+NotSupportedException("MethodToValueConverter+can+only+be+used+for+one+way+conversion.");
++++}
}|3343649|以及相应的单元测试：|3343650|[Test]
public+void+Convert()
{
++++var+converter+=+new+MethodToValueConverter();
++++Assert.AreEqual("1234",+converter.Convert(1234,+typeof(string),+"ToString",+null));
++++Assert.AreEqual("ABCD",+converter.Convert("+ABCD+",+typeof(string),+"Trim",+null));

++++Assert.IsNull(converter.Convert(null,+typeof(string),+"ToString",+null));

++++Assert.AreEqual("Pineapple",+converter.Convert("Pineapple",+typeof(string),+"InvalidMethodName",+null));
}|3343651|请注意，此转换器不强制使用targetType参数。|3343652|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/ms613620.aspx^0|T|F|T|F|0|0|0|0|0|0|0|0|D|A|0^^$0|@$1|2|3|4|5|6|7|14|8|@$9|15|A|16|B|C]]|D|@$9|17|A|18|1|19]]|E|$]]|$1|F|3|G|5|H|7|1A|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1B|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|1C|8|@]|D|@]|E|$]]|$1|O|3|P|5|H|7|1D|8|@]|D|@]|E|$I|J]]|$1|Q|3|R|5|6|7|1E|8|@]|D|@]|E|$]]|$1|S|3|T|5|H|7|1F|8|@]|D|@]|E|$I|J]]|$1|U|3|V|5|6|7|1G|8|@$9|1H|A|1I|B|C]]|D|@]|E|$]]|$1|W|3|-4|5|6|7|1J|8|@]|D|@]|E|$]]]|X|$Y|$5|Z|10|11|E|$12|13]]]]

Another approach that might work for you is to create a custom <a href="http://msdn.microsoft.com/en-us/library/ms613620.aspx" rel="noreferrer"><code>IValueConverter</code></a> that takes a method name as a parameter, so that it would be used like this:

<pre><code>ItemsSource="{Binding 
 Converter={StaticResource MethodToValueConverter},
 ConverterParameter='GetChildren'}"
</code></pre>

This converter would find and invoke the method using reflection. This requires the method to not have any arguments.

Here's an example of such a converter's source:

<pre class="lang-c# prettyprint-override"><code>public sealed class MethodToValueConverter : IValueConverter
{
 public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
 {
 var methodName = parameter as string;
 if (value==null || methodName==null)
 return value;
 var methodInfo = value.GetType().GetMethod(methodName, new Type[0]);
 if (methodInfo==null)
 return value;
 return methodInfo.Invoke(value, new object[0]);
 }

 public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
 {
 throw new NotSupportedException("MethodToValueConverter can only be used for one way conversion.");
 }
}
</code></pre>

And a corresponding unit test:

<pre class="lang-c# prettyprint-override"><code>[Test]
public void Convert()
{
 var converter = new MethodToValueConverter();
 Assert.AreEqual("1234", converter.Convert(1234, typeof(string), "ToString", null));
 Assert.AreEqual("ABCD", converter.Convert(" ABCD ", typeof(string), "Trim", null));

 Assert.IsNull(converter.Convert(null, typeof(string), "ToString", null));

 Assert.AreEqual("Pineapple", converter.Convert("Pineapple", typeof(string), "InvalidMethodName", null));
}
</code></pre>

Note that this converter does not enforce the <code>targetType</code> parameter.

blocks|key|3343662|text|若要在WPF方案中绑定到对象的方法，可以绑定到返回委托的属性。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3343663|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

To bind to an object's method in your WPF scenario, you can bind to a property that returns a delegate.

How do you bind to an objects method in this scenario in WPF?
<pre class="lang-cs prettyprint-override"><code>public class RootObject
{
 public string Name { get; }

 public ObservableCollection&lt;ChildObject&gt; GetChildren() {...}
}

public class ChildObject
{
 public string Name { get; }
}
</code></pre>
XAML:
<pre><code>&lt;TreeView ItemsSource=&quot;some list of RootObjects&quot;&gt;
 &lt;TreeView.Resources&gt;
 &lt;HierarchicalDataTemplate DataType=&quot;{x:Type data:RootObject}&quot; 
 ItemsSource=&quot;???&quot;&gt;
 &lt;TextBlock Text=&quot;{Binding Path=Name}&quot; /&gt;
 &lt;/HierarchicalDataTemplate&gt;
 &lt;HierarchicalDataTemplate DataType=&quot;{x:Type data:ChildObject}&quot;&gt;
 &lt;TextBlock Text=&quot;{Binding Path=Name}&quot; /&gt;
 &lt;/HierarchicalDataTemplate&gt;
 &lt;/TreeView.Resources&gt;
&lt;/TreeView&gt;
</code></pre>
Here I want to bind to the <code>GetChildren</code> method on each <code>RootObject</code> of the tree.
EDIT Binding to an <code>ObjectDataProvider</code> doesn't seem to work because I'm binding to a list of items, and the <code>ObjectDataProvider</code> needs either a static method, or it creates it's own instance and uses that.
For example, using Matt's answer I get:
<blockquote>
System.Windows.Data Error: 33 : ObjectDataProvider cannot create object; Type='RootObject'; Error='Wrong parameters for constructor.'
System.Windows.Data Error: 34 : ObjectDataProvider: Failure trying to invoke method on type; Method='GetChildren'; Type='RootObject'; Error='The specified member cannot be invoked on target.' TargetException:'System.Reflection.TargetException: Non-static method requires a target.
</blockquote>

Bind to a method in WPF?

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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在这种情况下，如何在WPF中绑定到对象方法？public class RootObject{ public string Name { get; } public ObservableCollection<ChildObject> GetChildren() {...}}public class Child...

问绑定到WPF中的方法？
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