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POSrange result about wpf grid row removal
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  1. POSrange result about wpf grid row removal
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    copied!<p>I have a question about grid removal:</p> <p>whenever I delete the last row or all rows in the grid, there is still something(actually the last row) displayed on the grid. I did actually checked the grid.rowdefinitions.count is 0. the method I used is removeAt and removeRange(0, grid.rowdefinitions.count). what's wrong with that? Can anybody tell why? Many thanks!</p> <pre><code>//------------ &lt;Grid DockPanel.Dock="Top" HorizontalAlignment="Left" Name="grid1" ShowGridLines="true" Width="200" Height="200"&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition/&gt; &lt;ColumnDefinition/&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition/&gt; &lt;RowDefinition/&gt; &lt;RowDefinition/&gt; &lt;RowDefinition/&gt; &lt;RowDefinition/&gt; &lt;/Grid.RowDefinitions&gt; &lt;TextBlock Grid.Row="0" Grid.Column="0" Text="100" /&gt; &lt;TextBlock Grid.Row="1" Grid.Column="0" Text="200" /&gt; &lt;TextBlock Grid.Row="2" Grid.Column="0" Text="300" /&gt; &lt;TextBlock Grid.Row="3" Grid.Column="0" Text="400" /&gt; &lt;TextBlock Grid.Row="4" Grid.Column="0" Text="500" /&gt; &lt;/Grid&gt; &lt;StackPanel HorizontalAlignment="Left" Orientation="Horizontal" Width="200" DockPanel.Dock="Top"&gt; &lt;Button Width="80" Click="rem5Row"&gt;Remove 5 Rows&lt;/Button&gt; &lt;/StackPanel&gt; //-------------- private void rem5Row(object sender, RoutedEventArgs e) { if (grid1.RowDefinitions.Count &lt; 5) { Console.WriteLine("less than 5!"); } else { grid1.RowDefinitions.RemoveRange(0,grid1.RowDefinitions.Count); } } </code></pre>
 

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