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POCan we manipulate (subtract) the value of a property while template bidning?
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  1. POCan we manipulate (subtract) the value of a property while template bidning?
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    copied!<p>I am currently defining few grids as following:</p> <pre><code>&lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="{TemplateBinding Height-Height/5}"/&gt; &lt;RowDefinition Height="{TemplateBinding Height/15}"/&gt; &lt;RowDefinition Height="{TemplateBinding Height/20}"/&gt; &lt;RowDefinition Height="{TemplateBinding Height/6}"/&gt; &lt;/Grid.RowDefinitions&gt; </code></pre> <p>While the division works fine , the subtraction isn't yielding the output.</p> <p>Ialso tried like following:</p> <pre><code>&lt;RowDefinition Height="{TemplateBinding Height-(Height/5)}"/&gt; </code></pre> <p>Still no result. Any suggestions plz.</p> <p>Thanks, Subhen</p> <p>**</p> <h2>Update</h2> <p>** Now In My XAML I tried implementing the IvalueConverter like :</p> <pre><code>&lt;RowDefinition Height="{TemplateBinding Height, Converter={StaticResource heightConverter}}"/&gt; </code></pre> <p>Added the reference as </p> <pre><code>&lt;local:medieElementHeight x:Key="heightConverter"/&gt; </code></pre> <p>In side generic.cs I have coded as following:</p> <pre><code>public class medieElementHeight : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { //customVideoControl objVdeoCntrl=new customVideoControl(); double custoMediaElementHeight = (double)value;//objVdeoCntrl.customMediaPlayer.Height; double mediaElementHeight = custoMediaElementHeight - (custoMediaElementHeight / 5); return mediaElementHeight; } #region IValueConverter Members object IValueConverter.ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } #endregion } </code></pre> <p>But getting the exception Unknown Element Height in the element RowDefination.</p> <p><strong>Updating Code <em>@Tony</em></strong></p> <pre><code>&lt;Style TargetType="local:customVideoControl"&gt; &lt;Setter Property="Template"&gt; &lt;Setter.Value&gt; &lt;ControlTemplate TargetType="local:customVideoControl"&gt; &lt;Grid&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="{TemplateBinding Height-Height/5}"/&gt; &lt;RowDefinition Height="{TemplateBinding Height/15}"/&gt; &lt;RowDefinition Height="{TemplateBinding Height/20}"/&gt; &lt;RowDefinition Height="{TemplateBinding Height/6}"/&gt; &lt;/Grid.RowDefinitions&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="2*"/&gt; &lt;ColumnDefinition Width="2*"/&gt; &lt;ColumnDefinition Width="2*"/&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;MediaElement x:Name="customMediaPlayer" Source="{TemplateBinding CustomMediaSource}" HorizontalAlignment="Center" VerticalAlignment="Center" Height="{TemplateBinding Height}" Width="{TemplateBinding Width}" Grid.Row="0" Grid.ColumnSpan="3" /&gt; &lt;/Grid&gt; &lt;/ControlTemplate&gt; &lt;/Setter.Value&gt; &lt;/Setter&gt; &lt;/Style&gt; </code></pre> <p>Now , My implementing XAML file contains is as follows:</p> <pre><code>&lt;customMediaElement:customVideoControl x:Name="custMediaElement" Width="400" Height="300" nextBtnEvent="custMediaElement_nextBtnEvent" prevBtnEvent="custMediaElement_prevBtnEvent" Visibility="Collapsed"/&gt; </code></pre> <p>Now, I want to substract or divide the values depending on the height of custMediaElement.</p>
 

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