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POMultiple parameters with Command binding
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  1. POMultiple parameters with Command binding
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    copied!<p>I have a textblock with command binding and using Prism library.</p> <p>this is the XAML parth:</p> <pre><code>&lt;TextBlock Margin="0,10,0,0"&gt;SocialSecurityNumer:&lt;/TextBlock&gt; &lt;TextBox Name="SSNText" GotFocus="TextBox_GotFocus" Text="{Binding SSN, UpdateSourceTrigger=PropertyChanged}" Margin="0,3,0,0"/&gt; </code></pre> <p>And this is the ViewModel behind:</p> <pre><code>public FindViewModel() { var eventAggregator = ServiceLocator.Current.GetInstance&lt;IEventAggregator&gt;(); FindCommand = new DelegateCommand( () =&gt; eventAggregator.GetEvent&lt;SSNChangedEvent&gt;().Publish(SSN), () =&gt; !string.IsNullOrWhiteSpace(Kennitala) ); } public DelegateCommand FindCommand { get; set; } private string ssn; public string SSN { get { return ssn; } set { if (ssn== value) return; ssn = value; RaisePropertyChanged(() =&gt; SSN); FindCommand.RaiseCanExecuteChanged(); } } </code></pre> <p>And this is the GridViewModel that listen for this event trigger and fire up a function with SSN as a parameter</p> <pre><code>public class GridViewModel : NotificationObject { public GridViewModel() { var eventAggregator = ServiceLocator.Current.GetInstance&lt;IEventAggregator&gt;(); eventAggregator.GetEvent&lt;SSNChangedEvent&gt;().Subscribe(GetData); } public ObservableCollection&lt;Investment&gt; Investments { get; set; } private void GetData(string ssn) { var list = GeniusConnection.GetDataFromWebService(ssn); Investments = new ObservableCollection&lt;Investment&gt;(list); RaisePropertyChanged(() =&gt; Investment); } } </code></pre> <p>How can i add another parameter, for example datetime parameter, the part that confuses me is:</p> <pre><code>FindCommand = new DelegateCommand( () =&gt; eventAggregator.GetEvent&lt;SSNChangedEvent&gt;().Publish(SSN), () =&gt; !string.IsNullOrWhiteSpace(Kennitala) ); </code></pre> <p>This Publish function takes just one parameter and therefor i don´t see how i can easily add multiple paramters.??</p>
 

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