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POWPF TextBox: How to change binding mode default to OneWay?
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  1. POWPF TextBox: How to change binding mode default to OneWay?
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    copied!<p>Initially, I have the following code:</p> <pre><code>&lt;TextBox Text="{Binding LengthUnit, Mode=OneWay}" IsReadOnly="True" Background="{x:Static SystemColors.ControlBrush}" /&gt; </code></pre> <p>I know I can define a style like this:</p> <pre><code>&lt;Style TargetType="{x:Type TextBox}" x:Key="readOnlyTextBox"&gt; &lt;Setter Property="Background" Value="{x:Static SystemColors.ControlBrush}"&gt;&lt;/Setter&gt; &lt;Setter Property="IsReadOnly" Value="True"&gt;&lt;/Setter&gt; &lt;/Style&gt; </code></pre> <p>So that I can write:</p> <pre><code>&lt;TextBox Text="{Binding LengthUnit, Mode=OneWay}" Style="{StaticResource readOnlyTextBox}" /&gt; </code></pre> <p>Because this textbox is readonly, the binding mode cannot be twoway. So, is it possible to make the OneWay binding as the default for my TextBox with this style?</p> <p>EDIT: I need to change the binding mode to OneWay, because my property is get-only, not because I marked the TextBox readonly. However, I still want to change the default binding mode of the textbox to OneWay if possible. </p> <hr> <p>this is the code I have following your suggestion, but it doesn't work. Did I miss anything?</p> <pre><code>public class ReadOnlyTextBox : TextBox { static ReadOnlyTextBox() { TextBox.TextProperty.OverrideMetadata(typeof(ReadOnlyTextBox), new FrameworkPropertyMetadata() { BindsTwoWayByDefault = false, Journal = true, DefaultUpdateSourceTrigger = UpdateSourceTrigger.Explicit }); } public ReadOnlyTextBox() { base.Background = SystemColors.ControlBrush; base.IsReadOnly = true; } } </code></pre>
 

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