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POPassing Data from WinForm to WPF
 

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    <p>I'm looking to pass data to a WPF window from a WinForm and receive a message back from the WPF window. </p> <p>My code is a mix of random online tutorials and HighCore's <a href="https://stackoverflow.com/questions/16743804/implementing-a-log-viewer-with-wpf/16745054#16745054" title="log viewer">log viewer</a>. I have a WinForm that launches my new WPF window in the following fashion: </p> <pre><code>private void openTransactionViewToolStripMenuItem_Click(object sender, EventArgs e) { var transactionViewWindow = new TransactionViewer.MainWindow(); ElementHost.EnableModelessKeyboardInterop(transactionViewWindow); transactionViewWindow.Show(); transactionViewWindow.Test = "test"; // testing out data passing transactionViewWindow.AddTest(); } </code></pre> <p>My MainWindow.xaml.cs looks like:</p> <pre><code>public partial class MainWindow : Window { public ObservableCollection&lt;Session&gt; SessionList { get; set; } public string Test{ get; set; } public MainWindow() { InitializeComponent(); SessionList = new ObservableCollection&lt;Session&gt;(); SessionList.Add(new Session() { BeginLine = 0, EndLine = 1, Message = "some message" }); SessionList.Add(new Session() { BeginLine = 2, EndLine = 3, Message = "another message" }); SessionItems.ItemsSource = SessionList; // the ItemsControl } public void AddTest() { SessionList.Add(new Session() { BeginLine = 4, EndLine = 5, Message = Test }); } } public class Session : PropertyChangedBase { public int BeginLine { get; set; } public int EndLine { get; set; } public string Message { get; set; } } </code></pre> <p>where <code>PropertyChangedBase</code> inherits from <code>INotifyPropertyChanged</code>. I have an ItemsControl bound to <code>Message</code>. My output looks like:</p> <blockquote> <p>some message<br> another message<br> test</p> </blockquote> <p>"Data passing" is successful! Eventually, when the WPF window loads I want to pass a <code>List&lt;Session&gt;</code> from my WinForm that will be used to populate the ItemsControl. I also want to have a button on the WinForm that will send a List to repopulate/refresh the data in the WPF. From the current behaviour I think this will be possible even with my current, simple implementation (just updating <code>SessionList</code>).</p> <p>Is there a more appropriate way of doing this? Events, for example? Do I need to fire off an event in order to tell my WinForm that the WPF has successfully added all <code>Session</code> objects, or whenever a user clicks on a specific one?<br> Any benefit to using MVVM here?</p> <p>I've been developing for WinForms for a while and finding the transition to WPF quite confusing. Hopefully someone can help out with some guidance or code examples. </p> <p>Edit: for future reference, a decent MVVM tutorial targeted to people like me can be found here: <a href="http://jpreecedev.com/2013/06/08/wpf-mvvm-for-winforms-devs-part-1-of-5/" rel="nofollow noreferrer">http://jpreecedev.com/2013/06/08/wpf-mvvm-for-winforms-devs-part-1-of-5/</a></p>
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    1. COSo you have WPF and WinForms in the same process? Same assembly?
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    2. CO@JeffBridgman yes, they're also in the same solution. I added a WPF Custom Control Library project to my existing solution.
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