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    <pre><code> &lt;Window x:Class="WpfApplication1.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"&gt; &lt;Window.Resources&gt; &lt;!--The Too tip for the textbox--&gt; &lt;Style x:Key="txterror" TargetType="{x:Type TextBox}"&gt; &lt;Style.Triggers&gt; &lt;Trigger Property="Validation.HasError" Value="true"&gt; &lt;Setter Property="ToolTip" Value="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=(Validation.Errors)[0].ErrorContent}"&gt;&lt;/Setter&gt; &lt;Setter Property="Background" Value="Red"&gt;&lt;/Setter&gt; &lt;/Trigger&gt; &lt;/Style.Triggers&gt; &lt;/Style&gt; &lt;/Window.Resources&gt; &lt;Grid&gt; &lt;TextBox x:Name="txt" Text="{Binding Mode=TwoWay, IsAsync=True, Path=Num, UpdateSourceTrigger=PropertyChanged}" Margin="63,36,71,184" &gt; &lt;TextBox.Effect&gt; &lt;DropShadowEffect ShadowDepth="5"/&gt; &lt;/TextBox.Effect&gt; &lt;/TextBox&gt; &lt;TextBox Margin="63,96,71,124" Text="{Binding ElementName=txt,Path=Text}"&gt; &lt;TextBox.Effect&gt; &lt;DropShadowEffect ShadowDepth="5" /&gt; &lt;/TextBox.Effect&gt; &lt;/TextBox&gt; &lt;/Grid&gt; &lt;/Window&gt; </code></pre> <p>Use above code its working fine logicaly. means that when u set value of Num proeprty it setting proerty value to 100 but the textbox values of your widnow is not changed. it is because of the framework element it uses the Error validation so what so ever u want to put into textbox it will type that and present that value on the textbox. but the property values is always 100 when ever its goes higher then 100.</p> <p>Your Solution is to use the <strong>IsAsync=True</strong> in you binding statement</p>
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    1. COthank, but I already know that. now what I need to know is how to make the UI always follow the property value.
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      1. USCui Pengfei 崔鹏飞
    2. COYour Solution is to use the IsAsync=True in you binding statement
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    3. COEr, your solution is to make the binding async?
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      1. USAdam Robinson
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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