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POPopulate a second DataGrid once I double click on a row WPF
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  1. POPopulate a second DataGrid once I double click on a row WPF
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    copied!<p>I am still a little new to wpf and MVVM. I am trying to code a solution without breaking that pattern. I have two (well three, but for the scope of this question just two) <code>DataGrid</code>s. I want to double click on the row of one, and from that load data Into the second <code>DataGrid</code> (ideally I would spin up a second thread that would load the data). So far I can get a window to pop up when I double click on a row. I throw the code for the event into the code behind for the xaml. To me that seems very windows formish. Somehow or the other I feel like that breaks the pattern a great deal. </p> <pre><code>private void DataGrid_MouseDoubleClick(object sender, System.Windows.Input.MouseButtonEventArgs e) { if (popDataGrid.SelectedItem == null) { return; } var selectedPopulation = popDataGrid.SelectedItem as PopulationModel; MessageBox.Show(string.Format("The Population you double clicked on has this ID - {0}, Name - {1}, and Description {2}", selectedPopulation.populationID, selectedPopulation.PopName, selectedPopulation.description)); } </code></pre> <p>That is the code for the event in the code behind and here is the grids definition in the xaml:</p> <pre><code>&lt;DataGrid ItemsSource="{Binding PopulationCollection}" Name="popDataGrid" AutoGenerateColumns="False" RowDetailsVisibilityMode="VisibleWhenSelected" CanUserAddRows="False" Margin="296,120,0,587" HorizontalAlignment="Left" Width="503" Grid.Column="1" MouseDoubleClick="DataGrid_MouseDoubleClick"&gt; &lt;/DataGrid&gt; </code></pre> <p>I am thinking this code should go in the MainWindowViewModel. So I am attempting to create a command:</p> <pre><code>public ICommand DoubleClickPopRow { get { return new DelegateCommand(OnDoubleClickPopRow); }} </code></pre> <p>and the same event handler:</p> <pre><code>private void OnDoubleClickPopRow(object sender, MouseButtonEventArgs e) { } </code></pre> <p>But the <code>ICommand</code> is throwing an exception when it returns the <code>DelegateCommand(OnDoubleClickPopRow)</code>.</p> <p>Well, one can plainly see that the number of arguments doesn't match. I know I am doing something wrong, but I am not quite sure what it is. I will continue to research this but any help you guys can give would be greatly appreciated.</p>
 

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