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POInteractions with MVVM wpf
 

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    <p>I am working with ComponentOne WPF Controls with MVVM Pattern.</p> <p>I have the following in my ViewModel:</p> <pre><code>public ICommand ClientsEnter { get { if (this.m_ClientsEnter == null) { this.m_ClientsEnter = new DelegateCommand&lt;string&gt;(ClientsLostFocusExecute, ClientsLostFocusCanExecute); } return m_ClientsEnter; } } </code></pre> <p>And an observable collection:</p> <pre><code>public ObservableCollection&lt;Client&gt; Clients { get { return m_Clients; } set { m_Clients = value; RaisePropertyChanged("Clients"); } } </code></pre> <p>In Xaml I have Added A ComponentOne Combo Box where I can enter ClientName Or ID and press enter to fire Event to execute ClientsEnter Command:</p> <pre><code>&lt;Custom1:C1ComboBox Grid.Row="2" Grid.Column="1" Height="24" Name="cmbClients" HorizontalAlignment="Left" VerticalAlignment="Center" ItemsSource="{Binding Clients, Mode=OneWay}" SelectedValuePath="ClientID" DisplayMemberPath="NameE" IsEditable="True" Text="Enter Client Name Or ID" SelectedValue="{Binding Path=Filter.ClientID, Mode=TwoWay}" MinWidth="150" Margin="0,2" Width="189"&gt; &lt;i:Interaction.Triggers&gt; &lt;ei:KeyTrigger Key="enter" FiredOn="KeyUp" ActiveOnFocus="True" SourceName= "cmbClients"&gt; &lt;i:InvokeCommandAction Command="{Binding ClientsEnter, Mode=OneWay}" CommandParameter="{Binding Text,ElementName=cmbClients}" CommandName="KeyDown"/&gt; &lt;/ei:KeyTrigger&gt; &lt;/i:Interaction.Triggers&gt; &lt;/Custom1:C1ComboBox&gt; </code></pre> <p>I need to know why it doesn't work, after pressing enter the clientID Disappears and nothing happens. Even the text="Enter Client Name Or ID" doesn't appear! Any ideas? note that when i change the key to space it works but it doesnt take the text from combobox,</p>
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    1. USSheridan
    1. USHatem Ahmed Gamil
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      1. VTUpMod
    1. COAre your command being called then user presses Enter? Can you also provide code for you command and DataContext of Combobox (your view model)
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      1. USNikolay
    2. COAfter spending 2 days investigating this issue ,i discover that there is a bug in C1Combobox as i replaced it with telerik Comboxbox and add the same trigger without changing anything in xaml except the control and it works fine. finally,i dont recommend C1 wpf controls
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      1. USHatem Ahmed Gamil
 

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