blocks|key|5378639|text|您也可以通过NuGet在WPF+Toolkit中找到一个。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|5378640|这篇文章演示了如何创建一个textbox，它可以在运行时根据输入自动建议项目，在本例中是磁盘驱动器文件夹。WPF+AutoComplete+Folder+TextBox|5378641|再看看这个不错的Reusable+WPF+Autocomplete+TextBox，它对我来说非常有用。|5378642|entityMap|0|LINK|mutability|MUTABLE|url|http://wpf.codeplex.com/releases/view/40535|1|http://www.codeproject.com/KB/WPF/autocomplete-textbox.aspx|2|http://www.codeproject.com/KB/WPF/autocomplete_textbox.aspx^0|C|B|0|0|1H|V|1|0|8|X|2|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|D|3|E|5|6|7|X|8|@]|9|@$A|Y|B|Z|1|10]]|C|$]]|$1|F|3|G|5|6|7|11|8|@]|9|@$A|12|B|13|1|14]]|C|$]]|$1|H|3|-4|5|6|7|15|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]|R|$5|K|L|M|C|$N|S]]]]

You can find one in the <a href="http://wpf.codeplex.com/releases/view/40535" rel="noreferrer">WPF Toolkit</a>, which is also available via NuGet.

This article demos how to create a textbox which can auto-suggest items at runtime based on input, in this case, disk drive folders. 
<a href="http://www.codeproject.com/KB/WPF/autocomplete-textbox.aspx" rel="noreferrer">WPF AutoComplete Folder TextBox</a> 

Also take a look at this nice <a href="http://www.codeproject.com/KB/WPF/autocomplete_textbox.aspx" rel="noreferrer">Reusable WPF Autocomplete TextBox</a>, it was for me very usable.

blocks|key|1851289|text|Nimgoble's是我在2015年使用的版本。我想我把它放在这里，因为这个问题是谷歌的"wpf自动完成文本框“列表的首位。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1851290|1851291|在Visual+Studio|ordered-list-item|1851292|中为项目安装nuget包在xaml中添加对该库的引用：|1851293|1851294|xmlns:behaviors="clr-namespace:WPFTextBoxAutoComplete;assembly=WPFTextBoxAutoComplete"|style|CODE|1851295|Create文本框并将AutoCompleteBehaviour绑定到List<String>+(TestItems)：|unordered-list-item|1851296|1851297|<TextBox+Text="{Binding+TestText,+UpdateSourceTrigger=PropertyChanged}"+behaviors:AutoCompleteBehavior.AutoCompleteItemsSource="{Binding+TestItems}"+/>|1851298|IMHO这比上面列出的其他选项更容易上手和管理。|1851299|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/Nimgoble/WPFTextBoxAutoComplete/^0|0|A|0|0|0|0|0|0|0|2E|0|Z|C|0|0|0|1Z|20|27|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@$A|15|B|16|1|17]]|C|$]]|$1|D|3|-4|5|6|7|18|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|19|8|@]|9|@]|C|$]]|$1|H|3|I|5|G|7|1A|8|@]|9|@]|C|$]]|$1|J|3|-4|5|6|7|1B|8|@]|9|@]|C|$]]|$1|K|3|L|5|6|7|1C|8|@$A|1D|B|1E|M|N]]|9|@]|C|$]]|$1|O|3|P|5|Q|7|1F|8|@$A|1G|B|1H|M|N]]|9|@]|C|$]]|$1|R|3|-4|5|6|7|1I|8|@]|9|@]|C|$]]|$1|S|3|T|5|6|7|1J|8|@$A|1K|B|1L|M|N]|$A|1M|B|1N|M|N]]|9|@]|C|$]]|$1|U|3|V|5|6|7|1O|8|@]|9|@]|C|$]]|$1|W|3|-4|5|6|7|1P|8|@]|9|@]|C|$]]]|X|$Y|$5|Z|10|11|C|$12|13]]]]

<a href="https://github.com/Nimgoble/WPFTextBoxAutoComplete/" rel="noreferrer">Nimgoble's</a> is the version I used in 2015. Thought I'd put it here as this question was top of the list in google for "wpf autocomplete textbox"

<ol>
<li>Install nuget package for project in Visual Studio</li>
<li>Add a reference to the library in the xaml: 
<code>xmlns:behaviors="clr-namespace:WPFTextBoxAutoComplete;assembly=WPFTextBoxAutoComplete"</code></li>
<li>Create a textbox and bind the AutoCompleteBehaviour to <code>List&lt;String&gt;</code> (TestItems): 
<code>&lt;TextBox Text="{Binding TestText, UpdateSourceTrigger=PropertyChanged}"</code>
<code>behaviors:AutoCompleteBehavior.AutoCompleteItemsSource="{Binding TestItems}" /&gt;</code></li>
</ol>

IMHO this is much easier to get started and manage than the other options listed above.

blocks|key|5378663|text|或者，您可以通过单击将AutoCompleteBox添加到工具箱中，然后选择项，转到WPF组件，键入位于System.Windows.Controls命名空间中的filter+AutoCompleteBox，然后将其拖动到您的xaml文件中。这比做其他事情要容易得多，因为AutoCompleteBox是一个本机控件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5378664|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|$]]

or you can add the AutoCompleteBox into the toolbox by clicking on it and then Choose Items, go to WPF Components, type in the filter AutoCompleteBox, which is on the System.Windows.Controls namespace and the just drag into your xaml file. This is way much easier than doing these other stuff, since the AutoCompleteBox is a native control.

blocks|key|5378717|text|我知道这是一个非常古老的问题，但我想补充一个我想出的答案。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5378718|首先，您需要一个用于TextBox的普通TextChanged事件处理程序的处理程序|offset|length|style|CODE|5378719|private+bool+InProg;
internal+void+TBTextChanged(object+sender,+TextChangedEventArgs+e)
++++++++++++{
++++++++++++var+change+=+e.Changes.FirstOrDefault();
++++++++++++if+(+!InProg+)
++++++++++++++++{
++++++++++++++++InProg+=+true;
++++++++++++++++var+culture+=+new+CultureInfo(CultureInfo.CurrentCulture.Name);
++++++++++++++++var+source+=+(+(TextBox)sender+);
++++++++++++++++++++if+(+(+(+change.AddedLength+-+change.RemovedLength+)+>+0+%7C%7C+source.Text.Length+>+0+)+&&+!DelKeyPressed+)
++++++++++++++++++++++++{
+++++++++++++++++++++++++if+(+Files.Where(x+=>+x.IndexOf(source.Text,+StringComparison.CurrentCultureIgnoreCase)+==+0+).Count()+>+0+)
++++++++++++++++++++++++++++{
++++++++++++++++++++++++++++var+_appendtxt+=+Files.FirstOrDefault(ap+=>+(+culture.CompareInfo.IndexOf(ap,+source.Text,+CompareOptions.IgnoreCase)+==+0+));
++++++++++++++++++++++++++++_appendtxt+=+_appendtxt.Remove(0,+change.Offset+%2B+1);
++++++++++++++++++++++++++++source.Text+%2B=+_appendtxt;
++++++++++++++++++++++++++++source.SelectionStart+=+change.Offset+%2B+1;
++++++++++++++++++++++++++++source.SelectionLength+=+source.Text.Length;
++++++++++++++++++++++++++++}
++++++++++++++++++++++++}
++++++++++++++++InProg+=+false;
++++++++++++++++}
++++++++++++}|code-block|syntax|javascript|5378720|然后创建一个简单的PreviewKeyDown处理程序：|5378721|++++private+static+bool+DelKeyPressed;
++++internal+static+void+DelPressed(object+sender,+KeyEventArgs+e)
++++{+if+(+e.Key+==+Key.Back+)+{+DelKeyPressed+=+true;+}+else+{+DelKeyPressed+=+false;+}+}|5378722|在此示例中，"Files“是在应用程序启动时创建的目录名列表。|5378723|然后只需附加处理程序：|5378724|public+class+YourClass
++{
++public+YourClass()
++++{
++++YourTextbox.PreviewKeyDown+%2B=+DelPressed;
++++YourTextbox.TextChanged+%2B=+TBTextChanged;
++++}
++}|5378725|这样，您选择放入List中的任何内容都将用于自动完成框。如果你希望有一个庞大的自动补全列表，这可能不是一个很好的选择，但在我的应用程序中，它只看到20-50个项目，所以循环非常快。|5378726|entityMap^0|0|A|7|K|B|0|0|9|E|0|0|0|0|0|8|4|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@$D|12|E|13|F|G]|$D|14|E|15|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|16|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|17|8|@$D|18|E|19|F|G]]|9|@]|A|$]]|$1|O|3|P|5|J|7|1A|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|1B|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1C|8|@]|9|@]|A|$]]|$1|U|3|V|5|J|7|1D|8|@]|9|@]|A|$K|L]]|$1|W|3|X|5|6|7|1E|8|@$D|1F|E|1G|F|G]]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1H|8|@]|9|@]|A|$]]]|Z|$]]

I know this is a very old question but I want to add an answer I have come up with.

First you need a handler for your normal <code>TextChanged</code> event handler for the <code>TextBox</code>:

<pre><code>private bool InProg;
internal void TBTextChanged(object sender, TextChangedEventArgs e)
 {
 var change = e.Changes.FirstOrDefault();
 if ( !InProg )
 {
 InProg = true;
 var culture = new CultureInfo(CultureInfo.CurrentCulture.Name);
 var source = ( (TextBox)sender );
 if ( ( ( change.AddedLength - change.RemovedLength ) &gt; 0 || source.Text.Length &gt; 0 ) &amp;&amp; !DelKeyPressed )
 {
 if ( Files.Where(x =&gt; x.IndexOf(source.Text, StringComparison.CurrentCultureIgnoreCase) == 0 ).Count() &gt; 0 )
 {
 var _appendtxt = Files.FirstOrDefault(ap =&gt; ( culture.CompareInfo.IndexOf(ap, source.Text, CompareOptions.IgnoreCase) == 0 ));
 _appendtxt = _appendtxt.Remove(0, change.Offset + 1);
 source.Text += _appendtxt;
 source.SelectionStart = change.Offset + 1;
 source.SelectionLength = source.Text.Length;
 }
 }
 InProg = false;
 }
 }
</code></pre>

Then make a simple <code>PreviewKeyDown</code> handler:

<pre><code> private static bool DelKeyPressed;
 internal static void DelPressed(object sender, KeyEventArgs e)
 { if ( e.Key == Key.Back ) { DelKeyPressed = true; } else { DelKeyPressed = false; } }
</code></pre>

In this example "Files" is a list of directory names created on application startup.

Then just attach the handlers:

<pre><code>public class YourClass
 {
 public YourClass()
 {
 YourTextbox.PreviewKeyDown += DelPressed;
 YourTextbox.TextChanged += TBTextChanged;
 }
 }
</code></pre>

With this whatever you choose to put in the <code>List</code> will be used for the autocomplete box. This may not be a great option if you expect to have an enormous list for the autocomplete but in my app it only ever sees 20-50 items so it cycles through very quick.

blocks|key|3961237|text|如果您有少量要自动完成的值，则可以简单地将它们添加到xaml中。输入将调用自动完成功能，另外您还可以使用下拉列表。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3961238|<ComboBox+Text="{Binding+CheckSeconds,+UpdateSourceTrigger=PropertyChanged}"
++++++++++IsEditable="True">
++++<ComboBoxItem+Content="60"/>
++++<ComboBoxItem+Content="120"/>
++++<ComboBoxItem+Content="180"/>
++++<ComboBoxItem+Content="300"/>
++++<ComboBoxItem+Content="900"/>
</ComboBox>|code-block|syntax|javascript|3961239|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|$]]

If you have a small number of values to auto complete, you can simply add them in xaml. Typing will invoke auto-complete, plus you have dropdowns too.

<pre><code>&lt;ComboBox Text="{Binding CheckSeconds, UpdateSourceTrigger=PropertyChanged}"
 IsEditable="True"&gt;
 &lt;ComboBoxItem Content="60"/&gt;
 &lt;ComboBoxItem Content="120"/&gt;
 &lt;ComboBoxItem Content="180"/&gt;
 &lt;ComboBoxItem Content="300"/&gt;
 &lt;ComboBoxItem Content="900"/&gt;
&lt;/ComboBox&gt;
</code></pre>

blocks|key|1547386|text|我很奇怪为什么没有人建议使用WinForms文本框。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1547387|XAML：|1547388|+++++<WindowsFormsHost++Margin="10"+Width="70">
++++++++<wf:TextBox+x:Name="textbox1"/>
+++++</WindowsFormsHost>|code-block|syntax|javascript|1547389|另外，别忘了Winforms的命名空间：|1547390|xmlns:wf="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"|1547391|C#：|1547392|+++++AutoCompleteStringCollection+stringCollection+=+new+AutoCompleteStringCollection(){"String+1",+"String+2",+"etc..."};
+++
+++++textbox1.AutoCompleteMode+=+AutoCompleteMode.SuggestAppend;
+++++textbox1.AutoCompleteSource+=+AutoCompleteSource.CustomSource;
+++++textbox1.AutoCompleteCustomSource+=+stringCollection;|1547393|对于自动完成，你需要在代码后面做，因为出于某些原因，其他人可能会解释，它抛出了一个异常。|1547394|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|Z|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|Q|3|R|5|6|7|11|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

I'm surprised why no one suggested to use the WinForms Textbox.
XAML:
<pre><code> &lt;WindowsFormsHost Margin=&quot;10&quot; Width=&quot;70&quot;&gt;
 &lt;wf:TextBox x:Name=&quot;textbox1&quot;/&gt;
 &lt;/WindowsFormsHost&gt;
</code></pre>
Also don't forget the Winforms Namespace:
<pre><code>xmlns:wf=&quot;clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms&quot;
</code></pre>
C#:
<pre><code> AutoCompleteStringCollection stringCollection = new AutoCompleteStringCollection(){&quot;String 1&quot;, &quot;String 2&quot;, &quot;etc...&quot;};
 
 textbox1.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
 textbox1.AutoCompleteSource = AutoCompleteSource.CustomSource;
 textbox1.AutoCompleteCustomSource = stringCollection;
</code></pre>
With Autocomplete, you need to do it in the Code behind, because for some reasons, others might can explain, it throws an exception.

Is it possible to make a textbox autocomplete in WPF? 

I found a sample where a combo box is used and the triangle is removed by editing the style template.

Is there a better solution?

AutoComplete TextBox 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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有没有可能在WPF中做一个文本框自动完成？我发现了一个示例，其中使用了组合框，并通过编辑样式模板删除了三角形。有没有更好的解决方案？

问WPF中的AutoComplete TextBox
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