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POSet WPF Image source from List<T> based on combo box selection
 

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  1. POSet WPF Image source from List<T> based on combo box selection
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    <p>I have a SearchResponse class that is returned to my viewmodel.</p> <pre><code>public class SearchResponse { public ICollection&lt;SearchResult&gt; Results { get; private set; } public string OriginalSearchTerm { get; private set; } public TimeSpan TimeTaken { get; private set; } public SearchResponse(ICollection&lt;SearchResult&gt; results, string originalSearchTerm, TimeSpan timeTaken) { Results = results; OriginalSearchTerm = originalSearchTerm; TimeTaken = timeTaken; } } </code></pre> <p>A listbox is bound to <code>SearchResponse.Results</code> with each item containing an image for the thumbnail. <code>SearchResult</code> looks like this:</p> <pre><code>public class SearchResult { public string Title { get; set; } public string Description { get; set; } public string Path { get; set; } public ICollection&lt;ThumbnailImage&gt; ThumbnailPaths { get; set; } public SearchResult() { } public SearchResult(string title, string description, string path, ICollection&lt;ThumbnailImage&gt; thumbnailPaths) { Title = title; Description = description; Path = path; ThumbnailPaths = thumbnailPaths; } } </code></pre> <p>And here is <code>ThumbnailImage</code> (ThumbnailSize is an enum):</p> <pre><code>public class ThumbnailImage { public int Id { get; set; } public ThumbnailSize ThumbnailSize { get; set; } public string Path { get; set; } public ThumbnailImage() { } public ThumbnailImage(ThumbnailSize thumbnailSize, string path) { ThumbnailSize = thumbnailSize; Path = path; } } </code></pre> <p>Finally, I have a ComboBox bound to an enum of thumbnail sizes with the intention that when the user selects a size the thumbnail images in the search results immediately change accordingly. So when this happens I need to query the <code>ICollection&lt;ThumbnailImage&gt;</code> for the correct filepath, update the image width and height (fixed width/height for each thumbnail size) and apply the changes to the entire list of results.</p> <pre><code>&lt;ComboBox DockPanel.Dock="Right" ItemsSource="{Binding Source={StaticResource ThumbnailSizesFromEnum}}" SelectedItem="{Binding CurrentThumbnailSize}"&gt; &lt;/ComboBox&gt; </code></pre> <p>I have a working bound <code>CurrentThumbnail</code> property as shown above.</p> <p>Can anyone suggest the best (or at least a good) way to approach this. At the moment I just have a headache form reading too much trying to find a solution. I wonder if I should make use of a Command, a Value Converter or maybe a StyleTrigger but either way I really need some pointers.</p> <p>Thanks.</p>
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