An extension method that uses the Try pattern to get a single value from a collection.

TrySingleExtensionMethod.cs

public static class Extensions
{
    /// <summary>
    /// Try to get the single value from the collection
    /// </summary>
    /// <typeparam name="T">The type of elements in the collection</typeparam>
    /// <param name="source">the source collection</param>
    /// <param name="predicate">The predicate to test elements</param>
    /// <param name="item">The item found, or null</param>
    /// <returns>true if found, false otherwise</returns>
    public static bool TrySingle<T>(this IEnumerable<T> source, Func<T, bool> predicate, out T? item)
    {
        item = source.SingleOrDefault(predicate);
        return item != null;
    }
}