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POexecute a function in a viewmodel and real time refresh of the view
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  1. POexecute a function in a viewmodel and real time refresh of the view
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    copied!<p>I have a small problem with my MVVM application.</p> <p>I have a function in a viewmodel which modify a collection. This collection is bind to the view to show a datagrid. When an user click on a button, the function modify the collection but it can take few minutes and the view is not refresh.</p> <p>My question is how can I execute this function to have the view refreshed in real time ?</p> <p>In another program I have used the dispatcher but it was in the code behind of the view without binding.</p> <p>Thanks</p> <p>Edit :</p> <p>Model :</p> <pre><code>public class Composants : INotifyPropertyChanged { private string _nom; public string Nom { get { return _nom; } set { _nom = value; OnPropertyChanged("Nom"); } } } </code></pre> <p>ViewModel :</p> <pre><code>public class PageSynchroViewModel : INotifyPropertyChanged { public void SynchroniserComposants() { foreach (var comp in _selectedVersion.ListeComposants) { comp.Nom = ""; } } </code></pre> <p>View (I don't put all the code):</p> <pre><code>&lt;Page x:Class="Centre_de_synchronisation.Vues.PageSynchro" [...] xmlns:app="clr-namespace:Centre_de_synchronisation.Classes" mc:Ignorable="d" d:DesignHeight="531" d:DesignWidth="778" Title="PageSynchro" Background="{x:Null}"&gt; &lt;Canvas&gt; [...] &lt;DataGrid Name="GridComposants" Style="{StaticResource DatagridStyle}" ItemsSource="{Binding ListeComposants}" AutoGenerateColumns="False" Canvas.Left="12" Canvas.Top="201" Height="285" Width="754" &gt; &lt;DataGrid.Columns&gt; &lt;DataGridTextColumn Header="Nom" Binding="{Binding Nom}" Width="150" IsReadOnly="True"/&gt; [...] &lt;/DataGrid&gt; &lt;Button Name="BoutonSynchro" Style="{StaticResource MessageBoxButtonStyle}" Content="Synchroniser" Height="27" Width="107" Command="{Binding BoutonSynchro}" CommandParameter="GridComposants" Visibility="{Binding Etat, Converter={StaticResource VisibilityConverter}}"/&gt; &lt;/Canvas&gt; </code></pre> <p></p>
 

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