In Umbraco 14, the IPublishedMediaCache.GetSingleByXPath() method is obsolete, so you’ll need to use a different approach to get media by its filename without making direct database calls.

Here’s how you can do it:

Using IPublishedSnapshot and LINQ First, you’ll need to work with IPublishedContentQuery. This allows you to query published content, including media. If you’re looking for media items by their filename, LINQ is a good option.

Inject IPublishedContentQuery: In your class, make sure to inject IPublishedContentQuery.

private readonly IPublishedContentQuery _publishedContentQuery;

public YourClass(IPublishedContentQuery publishedContentQuery)
{
    _publishedContentQuery = publishedContentQuery;
}
Fetch Media by Filename: Use a LINQ query to filter media items by their filename.
csharp
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public IPublishedContent GetMediaByFilename(string filename)
{
    // Get all media items
    var mediaItems = _publishedContentQuery.ContentAtRoot().DescendantsOrSelfOfType("media");

    // Filter by filename
    var mediaItem = mediaItems.FirstOrDefault(m => m.Name.Equals(filename, StringComparison.InvariantCultureIgnoreCase));

    return mediaItem;
}

Using Examine for Better Performance If you have a large number of media items, using LINQ directly might not be very efficient. In this case, you can use Examine, Umbraco’s built-in search engine, for a faster solution.

Inject IExamineManager:

private readonly IExamineManager _examineManager;

public YourClass(IExamineManager examineManager)
{
    _examineManager = examineManager;
}
Fetch Media by Filename using Examine:
csharp
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public IPublishedContent GetMediaByFilename(string filename)
{
    var searcher = _examineManager.SearchProviderCollection["ExternalIndexSearcher"];
    var query = searcher.CreateQuery("media")
                        .Field("nodeName", filename.MultipleCharacterWildcard())
                        .And().Field("__NodeTypeAlias", "media");

    var results = query.Execute();
    var firstResult = results.FirstOrDefault();

    if (firstResult != null)
    {
        var mediaId = int.Parse(firstResult.Id);
        return _publishedContentQuery.Content(mediaId);
    }

    return null;
}

This way, you’re making use of Umbraco’s indexing capabilities to search for media by filename efficiently. This should help you avoid the performance issues you might encounter with direct LINQ queries on a large media library.

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