blocks|key|1470212|text|当光标位于特定的页面/用户控件上时，是否需要将光标设置为“等待”光标？如果没有，我建议使用Mouse.OverrideCursor|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1470213|Mouse.OverrideCursor+=+Cursors.Wait;
try
{
++++//+do+stuff
}
finally
{
++++Mouse.OverrideCursor+=+null;
}|code-block|syntax|javascript|1470214|这将覆盖您的应用程序的光标，而不仅仅是其UI的一部分，因此您所描述的问题就消失了。|1470215|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.windows.input.mouse.overridecursor.aspx^0|19|K|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|C|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

<p>Do you need the cursor to be a "wait" cursor only when it's over that particular page/usercontrol? If not, I'd suggest using <a href="http://msdn.microsoft.com/en-us/library/system.windows.input.mouse.overridecursor.aspx" rel="noreferrer">Mouse.OverrideCursor</a>:</p>

<pre><code>Mouse.OverrideCursor = Cursors.Wait;
try
{
    // do stuff
}
finally
{
    Mouse.OverrideCursor = null;
}
</code></pre>

<p>This overrides the cursor for your application rather than just for a part of its UI, so the problem you're describing goes away.</p>


blocks|key|1685525|text|您可以在按钮上使用数据触发器(带有视图模型)来启用等待光标。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1685526|<Button+x:Name="NextButton"
++++++++Content="Go"
++++++++Command="{Binding+GoCommand+}">
++++<Button.Style>
+++++++++<Style+TargetType="{x:Type+Button}">
+++++++++++++<Setter+Property="Cursor"+Value="Arrow"/>
+++++++++++++<Style.Triggers>
+++++++++++++++++<DataTrigger+Binding="{Binding+Path=IsWorking}"+Value="True">
+++++++++++++++++++++<Setter+Property="Cursor"+Value="Wait"/>
+++++++++++++++++</DataTrigger>
+++++++++++++</Style.Triggers>
+++++++++</Style>
++++</Button.Style>
</Button>|code-block|syntax|javascript|1685527|下面是view-model中的代码：|1685528|public+class+MainViewModel+:+ViewModelBase
{
+++//+most+code+removed+for+this+example

+++public+MainViewModel()
+++{
++++++GoCommand+=+new+DelegateCommand<object>(OnGoCommand,+CanGoCommand);
+++}

+++//+flag+used+by+data+binding+trigger
+++private+bool+_isWorking+=+false;
+++public+bool+IsWorking
+++{
++++++get+{+return+_isWorking;+}
++++++set
++++++{
+++++++++_isWorking+=+value;
+++++++++OnPropertyChanged("IsWorking");
++++++}
+++}

+++//+button+click+event+gets+processed+here
+++public+ICommand+GoCommand+{+get;+private+set;+}
+++private+void+OnGoCommand(object+obj)
+++{
++++++if+(+_selectedCustomer+!=+null+)
++++++{
+++++++++//+wait+cursor+ON
+++++++++IsWorking+=+true;
+++++++++_ds+=+OrdersManager.LoadToDataSet(_selectedCustomer.ID);
+++++++++OnPropertyChanged("GridData");

+++++++++//+wait+cursor+off
+++++++++IsWorking+=+false;
++++++}
+++}
}|1685529|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<p>You can use a data trigger (with a view model) on the button to enable a wait cursor.</p>

<pre><code>&lt;Button x:Name="NextButton"
        Content="Go"
        Command="{Binding GoCommand }"&gt;
    &lt;Button.Style&gt;
         &lt;Style TargetType="{x:Type Button}"&gt;
             &lt;Setter Property="Cursor" Value="Arrow"/&gt;
             &lt;Style.Triggers&gt;
                 &lt;DataTrigger Binding="{Binding Path=IsWorking}" Value="True"&gt;
                     &lt;Setter Property="Cursor" Value="Wait"/&gt;
                 &lt;/DataTrigger&gt;
             &lt;/Style.Triggers&gt;
         &lt;/Style&gt;
    &lt;/Button.Style&gt;
&lt;/Button&gt;
</code></pre>

<p>Here is the code from the view-model:</p>

<pre><code>public class MainViewModel : ViewModelBase
{
   // most code removed for this example

   public MainViewModel()
   {
      GoCommand = new DelegateCommand&lt;object&gt;(OnGoCommand, CanGoCommand);
   }

   // flag used by data binding trigger
   private bool _isWorking = false;
   public bool IsWorking
   {
      get { return _isWorking; }
      set
      {
         _isWorking = value;
         OnPropertyChanged("IsWorking");
      }
   }

   // button click event gets processed here
   public ICommand GoCommand { get; private set; }
   private void OnGoCommand(object obj)
   {
      if ( _selectedCustomer != null )
      {
         // wait cursor ON
         IsWorking = true;
         _ds = OrdersManager.LoadToDataSet(_selectedCustomer.ID);
         OnPropertyChanged("GridData");

         // wait cursor off
         IsWorking = false;
      }
   }
}
</code></pre>


blocks|key|1685641|text|如果您的应用程序使用异步的东西，而您正在摆弄鼠标的光标，那么您可能希望只在主UI线程中执行此操作。你可以使用app的Dispatcher线程来实现：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1685642|Application.Current.Dispatcher.Invoke(()+=>
{
++++//+The+check+is+required+to+prevent+cursor+flickering
++++if+(Mouse.OverrideCursor+!=+cursor)
++++++++Mouse.OverrideCursor+=+cursor;
});|code-block|syntax|javascript|1685643|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|$]]

<p>If your application uses async stuff and you're fiddling with Mouse's cursor, you probably want to do it only in main UI thread. You can use app's Dispatcher thread for that:</p>

<pre><code>Application.Current.Dispatcher.Invoke(() =&gt;
{
    // The check is required to prevent cursor flickering
    if (Mouse.OverrideCursor != cursor)
        Mouse.OverrideCursor = cursor;
});
</code></pre>


blocks|key|1685671|text|下面的方法对我很有效：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1685672|ForceCursor+=+true;
Cursor+=+Cursors.Wait;|code-block|syntax|javascript|1685673|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|$]]

<p>The following worked for me:</p>

<pre><code>ForceCursor = true;
Cursor = Cursors.Wait;
</code></pre>


<p>On several of my usercontrols, I change the cursor by using</p>

<pre><code>this.Cursor = Cursors.Wait;
</code></pre>

<p>when I click on something.</p>

<p>Now I want to do the same thing on a WPF page on a button click.  When I hover over my button, the cursor changes to a hand, but when I click it, it doesn't change to the wait cursor.  I wonder if this has something to do with the fact that it's a button, or because this is a page and not a usercontrol?  This seems like weird behavior.</p>


Changing the cursor in WPF sometimes works, sometimes doesn't

在我的几个用户控件上，我使用以下命令更改光标this.Cursor = Cursors.Wait;当我点击某样东西的时候。现在，我想在WPF页面上单击一个按钮来做同样的事情。当我将鼠标悬停在按钮上时，光标会变成一只手，但当我单击它时，它不会变成等待光标。我想知道这是不是因为它是一个按钮，或者因为这是一个页面而不是一个用...

问在WPF中更改光标有时有效，有时不起作用
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