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POHow to apply view-side filtering in MVVM?
 

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  1. POHow to apply view-side filtering in MVVM?
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    <p>I'm using Telerik RadGridView in my project (which essentially is a standart GridView). This component has its own filtering functionality and I want to get advantage of it.</p> <p>Filtering itself I am planning to do based on several combobox selected values. So if I got right idea of MVVM, I need to bind the combos to some ViewModel's properties. But here's a problem of how to pass these selected values back to View's component? how to make it refresh filtering as selected value change?</p> <p>upd: I use SimpleMVVM framework.</p> <p>XAML of MainWindow:</p> <pre><code>&lt;Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" ...... DataContext="{Binding Source={StaticResource Locator}, Path=MainPageViewModel}"&gt; &lt;StackPanel Height="auto"&gt; &lt;telerik:RadMenu VerticalAlignment="Top"&gt; ...... &lt;/telerik:RadMenu&gt; &lt;my:Expander VerticalAlignment="Top" HorizontalAlignment="Stretch" Height="auto" Width="auto"/&gt; &lt;my:CustomerView Margin="0,0,0,0" VerticalAlignment="Top" HorizontalAlignment="Stretch" Height="auto" Width="auto"/&gt; &lt;/StackPanel&gt; </code></pre> <p></p> <p>XAML of expander:</p> <pre><code>&lt;UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" ...... &gt; &lt;Grid Margin="10,10,0,10" Width="684" Height="97" VerticalAlignment="Top" HorizontalAlignment="Left" &gt; &lt;telerik:RadExpander x:Name="radExpander" IsExpanded="True" HorizontalAlignment="Stretch" VerticalAlignment="Top" telerik:AnimationManager.IsAnimationEnabled="True" Margin="0,0,0,0" Grid.RowSpan="2"&gt; &lt;telerik:RadComboBox HorizontalAlignment="Left" Margin="244,-2,0,0" VerticalAlignment="Top" Width="154" Height="26" ItemsSource="{Binding Path=AllLevels}" DisplayMemberPath="name" SelectedItem="{Binding SelectedEventLevel}"/&gt; ....... &lt;/Grid&gt; &lt;/telerik:RadExpander&gt; &lt;/Grid&gt; </code></pre> <p></p> <p>XAML of CustomerView:</p> <pre><code> &lt;telerik1:RadGridView Name="EventList" .... ItemsSource="{Binding SportEventsList}" AutoGenerateColumns="False"&gt; &lt;telerik1:RadGridView.Columns&gt; ..... &lt;/telerik1:RadGridView.Columns&gt; &lt;/telerik1:RadGridView&gt; </code></pre> <p>Snippet of Viewmodel's code:</p> <pre><code> private ObservableCollection&lt;sportevent&gt; _sportEventsList; public ObservableCollection&lt;sportevent&gt; SportEventsList { get { return _sportEventsList; } set { _sportEventsList = value; NotifyPropertyChanged(vm =&gt; vm.SportEventsList); } } </code></pre>
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    1. USRoaring Stones
    1. USRoaring Stones
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      1. POHow to apply view-side filtering in MVVM?
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    1. COHow do you imagine a filtering? You want to use your own combos or built-it RadGridView's functionality? Just bind `Selecteditem` to `ViewModel`'s property to pass the selected value back to `View`
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      1. POHow to apply view-side filtering in MVVM?
      1. USAndrey Gordeev
    2. CO@AndreyGordeev The combos from which I get parameters of filtering have nothing to do with RadGRidView. They are separate controls bound to properties on ViewModel. Since I plan to make filtering in RGV programmatically, in the View, it needs to get actual property's values and update a filter.
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      1. POHow to apply view-side filtering in MVVM?
      1. USRoaring Stones
    3. COThen do as I said - bind `ItemsSource` and `SelectedItem` of your `ComboBox` to `ViewModel`'s properties
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      1. POHow to apply view-side filtering in MVVM?
      1. USAndrey Gordeev
 

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