blocks|key|2192214|text|试试这个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2192215|<Sdk:AutoCompleteBox+Grid.Column="3"+Grid.Row="3"+Height="18"+Width="150"+
+++++IsTextCompletionEnabled="True"+TabIndex="9"+HorizontalAlignment="Left"

+++++Text="{Binding+ElementName=ResEdit,Path=DataContext.SelectedDemoText,Mode=TwoWay}"
+++++ItemsSource="{Binding+ElementName=ResEdit,Path=DataContext.DemoList,Mode=OneWay}"
+++++ItemTemplate="{StaticResource+DemoTemplate}"
+++++ValueMemberPath="DemoCode"+
+++++LostFocus="AutoCompleteBox_LostFocus"
+++++Margin="0,0,21,0"+Padding="0">
++</Sdk:AutoCompleteBox>|code-block|syntax|javascript|2192216|在autocomplete中不应同时使用函数SelectedText和SelectedItem。这是AutoCompleteBox的一个错误.更好的方法是在GotFocus和LossFocus上设置textbox和AutoCompleteBox的可见性。这样你就可以大胆地解决你的问题了。|2192217|+private+void+DemoAutoComplete_LostFocus(object+sender,+RoutedEventArgs+e)
++++++++++++{
++++++++++++++++DemoTextBox.Visibility+=+Visibility.Visible;
++++++++++++++++DemoAutoComplete.Visibility+=+Visibility.Collapsed;
++++++++++++++++DemoTextBox.Text+=+OCRAutoComplete.Text;

++++++++++++++++((DemoVM)this.DataContext).SelectedDemoText+=+DemoAutoComplete.Text;
++++++++++++}



private+void+DemoTextBox_GotFocus(object+sender,+RoutedEventArgs+e)
++++{
++++++++DemoAutoComplete.Text+=+OctTextBox.Text;
++++++++DemoTextBox.Visibility+=+Visibility.Collapsed;
++++++++DemoAutoComplete.Visibility+=+Visibility.Visible;
++++++++DemoAutoComplete.Focus();
++++}|2192218|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|$]]

try with this

<pre><code>&lt;Sdk:AutoCompleteBox Grid.Column="3" Grid.Row="3" Height="18" Width="150" 
 IsTextCompletionEnabled="True" TabIndex="9" HorizontalAlignment="Left"

 Text="{Binding ElementName=ResEdit,Path=DataContext.SelectedDemoText,Mode=TwoWay}"
 ItemsSource="{Binding ElementName=ResEdit,Path=DataContext.DemoList,Mode=OneWay}"
 ItemTemplate="{StaticResource DemoTemplate}"
 ValueMemberPath="DemoCode" 
 LostFocus="AutoCompleteBox_LostFocus"
 Margin="0,0,21,0" Padding="0"&gt;
 &lt;/Sdk:AutoCompleteBox&gt;
</code></pre>

You should not use both function SelectedText and SelectedItem in autocomplete. it's a bug of AutoCompleteBox..... A better way is to set the visiblity of the textbox and AutoCompleteBox on GotFocus and LossFocus. This Way You Will Defiantly Solve You Problem

<pre><code> private void DemoAutoComplete_LostFocus(object sender, RoutedEventArgs e)
 {
 DemoTextBox.Visibility = Visibility.Visible;
 DemoAutoComplete.Visibility = Visibility.Collapsed;
 DemoTextBox.Text = OCRAutoComplete.Text;

 ((DemoVM)this.DataContext).SelectedDemoText = DemoAutoComplete.Text;
 }



private void DemoTextBox_GotFocus(object sender, RoutedEventArgs e)
 {
 DemoAutoComplete.Text = OctTextBox.Text;
 DemoTextBox.Visibility = Visibility.Collapsed;
 DemoAutoComplete.Visibility = Visibility.Visible;
 DemoAutoComplete.Focus();
 }
</code></pre>

blocks|key|2189078|text|你应该能够改变你的绑定来实现这一点。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2189079|默认情况下，文本属性通常会在控件失去焦点时更新绑定源。通过设置绑定以更新PropertyChanged上的源代码，您可以在每次击键时实现验证。|2189080|Text属性上的绑定将如下所示|2189081|Text="{Binding+MyProperty,+Mode=TwoWay,+UpdateSourceTrigger=PropertyChanged}"|code-block|syntax|javascript|2189082|然后，在您的属性设置器中，您可以在认为合适的时候抛出一个ValidationException，或者您可以实现一个验证接口(INotifyDataErrorInfo或IDataErrorInfo)并以这种方式处理它。|offset|length|2189083|This+article+is+a+good+source+of+info+about+the+complexities+of+data+Binding|2189084|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.validationexception%2528v=vs.95%2529.aspx|1|http://msdn.microsoft.com/en-us/library/system.componentmodel.inotifydataerrorinfo%2528v=vs.95%2529.aspx|2|http://msdn.microsoft.com/en-gb/library/system.componentmodel.idataerrorinfo%2528v=vs.95%2529.aspx|3|http://msdn.microsoft.com/en-us/library/cc278072%2528v=vs.95%2529.aspx^0|0|0|0|0|S|J|0|1Q|K|1|2B|E|2|0|0|24|3|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|15|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|16|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|17|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|18|8|@]|9|@$M|19|N|1A|1|1B]|$M|1C|N|1D|1|1E]|$M|1F|N|1G|1|1H]]|A|$]]|$1|O|3|P|5|6|7|1I|8|@]|9|@$M|1J|N|1K|1|1L]]|A|$]]|$1|Q|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]|Y|$5|T|U|V|A|$W|Z]]|10|$5|T|U|V|A|$W|11]]|12|$5|T|U|V|A|$W|13]]]]

You should just be able to change your Binding to achieve this.

By default text properties usually update the Binding source when the control loses focus. By setting the Binding to update the source on PropertyChanged, you can implement validation with each keystroke.

Your Binding on the Text property would look something like this

<pre><code>Text="{Binding MyProperty, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
</code></pre>

In your property setter you can then throw a <a href="http://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.validationexception%28v=vs.95%29.aspx" rel="nofollow">ValidationException</a> when you deem it appropriate, or you can implement one of the validation interfaces (<a href="http://msdn.microsoft.com/en-us/library/system.componentmodel.inotifydataerrorinfo%28v=vs.95%29.aspx" rel="nofollow">INotifyDataErrorInfo</a> or <a href="http://msdn.microsoft.com/en-gb/library/system.componentmodel.idataerrorinfo%28v=vs.95%29.aspx" rel="nofollow">IDataErrorInfo</a>) and deal with it that way.

<a href="http://msdn.microsoft.com/en-us/library/cc278072%28v=vs.95%29.aspx" rel="nofollow">This article is a good source of info about the complexities of data Binding</a>

blocks|key|4373304|text|我最近一直在做这件事。我的问题可以通过检查自动完成框的lost+focus事件上的selected+item属性来解决。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4373305|private+void+autoCompleteBox1_LostFocus(object+sender,+RoutedEventArgs+e)+++++
{+++++
+++++if+(autoCompleteBox1.SelectedItem+==+null+&&+!string.IsNullOrEmpty(autoCompleteBox1.Text))
++++++{
+++++++MessageBox.Show("Please+fill+in+the+right+value");
+++++++autoCompleteBox1.Text+=+"";
+++++++autoCompleteBox1.Focus();
++++++++}
}|code-block|syntax|javascript|4373306|问候|4373307|Priya|4373308|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]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I have recently worked on this. My problem is solved by checking
the selected item property on the lost focus event of the autocomplete box.

<pre><code>private void autoCompleteBox1_LostFocus(object sender, RoutedEventArgs e) 
{ 
 if (autoCompleteBox1.SelectedItem == null &amp;&amp; !string.IsNullOrEmpty(autoCompleteBox1.Text))
 {
 MessageBox.Show("Please fill in the right value");
 autoCompleteBox1.Text = "";
 autoCompleteBox1.Focus();
 }
}
</code></pre>

Regards

Priya

I have an autocomplete box in silverlight and it is bound to a collection. It is working fine. I just want it so that the user can't enter any values which are not in the collection.

For example: Collection contain a value "Head". If user Enters Headx or something other than that, a validation should be fired. 

how to do this?

Regards

Arun

AutocompleteBox validation

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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我在silverlight中有一个自动完成框，它绑定到一个集合。它工作得很好。我只想要它，这样用户就不能输入任何不在集合中的值。例如:集合包含一个值"Head“。如果用户输入Headx或其他值，则应触发验证。该怎么做呢？问候Arun

问AutocompleteBox验证
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