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POCan't get WPF Listview to collapse when expanders in the listview collapse
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  1. POCan't get WPF Listview to collapse when expanders in the listview collapse
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    copied!<p>I have a wpf <code>ListView</code> with two <code>Expander</code>s in it. When the expanders expand the listview makes room for the content. When they collapse the listview does not "take back" that extra space. I have set <code>HorizontalAlignment</code> and <code>VerticalAlignment</code> to <code>Stretch</code> everywhere. Is there a way to do this? The <code>Details</code> and <code>Chart</code> columns contain the expanders. See code below. Thanks. </p> <p>Here at</p> <pre><code>&lt;Window.Resources&gt; &lt;DataTemplate x:Key="StockPriceChangeCell"&gt; &lt;StackPanel Orientation="Horizontal"&gt; &lt;Label Name="stockPriceChangeValue" Foreground="{Binding StockPriceChangeColor}" Content="{Binding StockPriceChange}" Width="Auto"&gt;&lt;/Label&gt; &lt;/StackPanel&gt; &lt;/DataTemplate&gt; &lt;DataTemplate x:Key="DetailsCell"&gt; &lt;StackPanel Orientation="Horizontal" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"&gt; &lt;Expander Header="Details..." BorderBrush="DarkBlue" Width="200" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"&gt; &lt;Grid Name="stockDetailGrid" Background="Beige" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" ShowGridLines="False"&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="96*" /&gt; &lt;RowDefinition Height="6*" /&gt; &lt;RowDefinition Height="96*" /&gt; &lt;RowDefinition Height="6*" /&gt; &lt;RowDefinition Height="96*" /&gt; &lt;RowDefinition Height="6*" /&gt; &lt;RowDefinition Height="96*" /&gt; &lt;RowDefinition Height="6*" /&gt; &lt;RowDefinition Height="96*" /&gt; &lt;RowDefinition Height="96*" /&gt; &lt;RowDefinition Height="96*" /&gt; &lt;RowDefinition Height="6*" /&gt; &lt;RowDefinition Height="96*" /&gt; &lt;RowDefinition Height="6*" /&gt; &lt;RowDefinition Height="96*" /&gt; &lt;RowDefinition Height="6*" /&gt; &lt;RowDefinition Height="96*" /&gt; &lt;RowDefinition Height="6*" /&gt; &lt;RowDefinition Height="96*" /&gt; &lt;/Grid.RowDefinitions&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="Auto" /&gt; &lt;ColumnDefinition Width="Auto" /&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;Label Grid.Row="0" Grid.Column="0" Name="previousClosePrompt" FontWeight="Bold" FontSize="12" Height="28" Width="Auto"&gt;Prev Close:&lt;/Label&gt; &lt;Label Grid.Row="0" Grid.Column="1" Name="previousCloseValue" FontWeight="Bold" FontSize="12" Height="28" Width="Auto" Content="{Binding StockDetails.PreviousClose}"&gt;&lt;/Label&gt; &lt;Separator Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2" Name="stockSeparator3" Margin="0,2" /&gt; &lt;Label Grid.Row="2" Grid.Column="0" Name="openPricePrompt" FontWeight="Bold" FontSize="12" Height="28"&gt;Open:&lt;/Label&gt; &lt;Label Grid.Row="2" Grid.Column="1" Name="openPriceValue" FontWeight="Bold" FontSize="12" Height="28" Content="{Binding StockDetails.OpeningPrice}"&gt;&lt;/Label&gt; &lt;Separator Grid.Row="3" Grid.Column="0" Grid.ColumnSpan="2" Name="stockSeparator5" Margin="0,2" /&gt; &lt;Label Grid.Row="4" Grid.Column="0" Name="yearlyTargetEstimatePrompt" FontWeight="Bold" FontSize="12" Height="28"&gt;1y Target Est:&lt;/Label&gt; &lt;Label Grid.Row="4" Grid.Column="1" Name="yearlyTargetEstimateValue" FontWeight="Bold" FontSize="12" Height="28" Content="{Binding StockDetails.YearTargetEstimate}"&gt;&lt;/Label&gt; &lt;Separator Grid.Row="5" Grid.Column="0" Grid.ColumnSpan="2" Name="stockSeparator6" Margin="0,2" /&gt; &lt;Label Grid.Row="6" Grid.Column="0" Name="stockDaysRangePrompt" FontWeight="Bold" FontSize="12" Height="28"&gt;Day's Range:&lt;/Label&gt; &lt;Label Grid.Row="6" Grid.Column="1" Name="stockDaysRangeValue" FontWeight="Bold" FontSize="12" Height="28" Content="{Binding StockDetails.DaysRange}"&gt;&lt;/Label&gt; &lt;Separator Grid.Row="7" Grid.Column="0" Grid.ColumnSpan="2" Name="stockSeparator7" Margin="0,2" /&gt; &lt;Label Grid.Row="8" Grid.Column="0" Name="stockYearsRangePrompt" FontWeight="Bold" FontSize="12" Height="28"&gt;52wk Range:&lt;/Label&gt; &lt;Label Grid.Row="8" Grid.Column="1" Name="stockYearsRangeValue" FontWeight="Bold" FontSize="12" Height="28" Content="{Binding StockDetails.YearsRange}"&gt;&lt;/Label&gt; &lt;Separator Grid.Row="9" Grid.Column="0" Grid.ColumnSpan="2" Name="stockSeparator8" Margin="0,2" /&gt; &lt;Label Grid.Row="10" Grid.Column="0" Name="averageVolumePrompt" FontWeight="Bold" FontSize="12" Height="28"&gt;Avg Vol (3m):&lt;/Label&gt; &lt;Label Grid.Row="10" Grid.Column="1" Name="averageVolumeValue" FontWeight="Bold" FontSize="12" Height="28" Content="{Binding StockDetails.AverageVolume}"&gt;&lt;/Label&gt; &lt;Separator Grid.Row="11" Grid.Column="0" Grid.ColumnSpan="2" Name="stockSeparator9" Margin="0,2" /&gt; &lt;Label Grid.Row="12" Grid.Column="0" Name="marketCapPrompt" FontWeight="Bold" FontSize="12" Height="28"&gt;Market Cap:&lt;/Label&gt; &lt;Label Grid.Row="12" Grid.Column="1" Name="marketCapValue" FontWeight="Bold" FontSize="12" Height="28" Content="{Binding StockDetails.MarketCap}"&gt;&lt;/Label&gt; &lt;Separator Grid.Row="13" Grid.Column="0" Grid.ColumnSpan="2" Name="stockSeparator10" Margin="0,2" /&gt; &lt;Label Grid.Row="14" Grid.Column="0" Name="priceEarningRatioPrompt" FontWeight="Bold" FontSize="12" Height="28"&gt;P/E (ttm):&lt;/Label&gt; &lt;Label Grid.Row="14" Grid.Column="1" Name="priceEarningRatioValue" FontWeight="Bold" FontSize="12" Height="28" Content="{Binding StockDetails.PriceEarningsRatio}"&gt;&lt;/Label&gt; &lt;Separator Grid.Row="15" Grid.Column="0" Grid.ColumnSpan="2" Name="stockSeparator11" Margin="0,2" /&gt; &lt;Label Grid.Row="16" Grid.Column="0" Name="earningsPerSharePrompt" FontWeight="Bold" FontSize="12" Height="28"&gt;EPS (ttm):&lt;/Label&gt; &lt;Label Grid.Row="16" Grid.Column="1" Name="earningsPerShareValue" FontWeight="Bold" FontSize="12" Height="28" Content="{Binding StockDetails.EarningsPerShare}"&gt;&lt;/Label&gt; &lt;Separator Grid.Row="17" Grid.Column="0" Grid.ColumnSpan="2" Name="stockSeparator12" Margin="0,2" /&gt; &lt;Label Grid.Row="18" Grid.Column="0" Name="dividendYieldPrompt" FontWeight="Bold" FontSize="12" Height="28"&gt;Div &amp;amp; Yield:&lt;/Label&gt; &lt;Label Grid.Row="18" Grid.Column="1" Name="dividendYieldValue" FontWeight="Bold" FontSize="12" Height="28" Content="{Binding StockDetails.DividendYield}"&gt;&lt;/Label&gt; &lt;/Grid&gt; &lt;/Expander&gt; &lt;/StackPanel&gt; &lt;/DataTemplate&gt; &lt;DataTemplate x:Key="ChartCell"&gt; &lt;StackPanel&gt; &lt;Expander Header="Chart..." BorderBrush="DarkBlue" Width="200" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"&gt; &lt;Image Name="stockGraph" Stretch="None" Source="{Binding StockChart}"/&gt; &lt;/Expander&gt; &lt;/StackPanel&gt; &lt;/DataTemplate&gt; &lt;/Window.Resources&gt; </code></pre> <p>Here is the listview:</p> <pre><code> &lt;TabItem Name="myStocksTab" Header="My Stocks" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"&gt; &lt;StackPanel Name="myStocksTabContainerPanel" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"&gt; &lt;Label Name="myStocksPrompt" Foreground="GhostWhite" Background="DarkBlue" FontSize="16" FontWeight="Bold"&gt;My Stocks&lt;/Label&gt; &lt;ListView Name="stocksUIList" ItemsSource="{Binding}" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" VerticalContentAlignment="Stretch"&gt; &lt;ListView.View&gt; &lt;GridView&gt; &lt;GridViewColumn Header="Action" CellTemplate="{StaticResource ButtonsCell}" Width="Auto"/&gt; &lt;GridViewColumn Header="Company/Stock Symbol" Width="Auto" DisplayMemberBinding="{Binding CompanyName}"/&gt; &lt;GridViewColumn Header="Last Trade" Width="Auto" DisplayMemberBinding="{Binding LastTrade}"/&gt; &lt;GridViewColumn Header="Trade Time" Width="Auto" DisplayMemberBinding="{Binding StockDetails.TradeTime}"/&gt; &lt;GridViewColumn Header="Change" CellTemplate="{StaticResource StockPriceChangeCell}"/&gt; &lt;GridViewColumn Header="Volume" Width="Auto" DisplayMemberBinding="{Binding TradingVolume}"/&gt; &lt;GridViewColumn Header="Details" CellTemplate="{StaticResource DetailsCell}" Width="215"/&gt; &lt;GridViewColumn Header="Chart" CellTemplate="{StaticResource ChartCell}" Width="215"/&gt; &lt;/GridView&gt; &lt;/ListView.View&gt; &lt;/ListView&gt; &lt;Button Name="addStock" FontSize="14" FontWeight="Bold" VerticalAlignment="Bottom" HorizontalAlignment="Stretch" Click="AddCompanyStock"&gt;Add Stock...&lt;/Button&gt; &lt;/StackPanel&gt; </code></pre>
 

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