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  • Koen van Ras 55 posts 315 karma points c-trib
    Apr 22, 2020 @ 15:34
    Koen van Ras
    0

    Get IMedia children in Umbraco 8

    Hi,

    I'm trying to get all the child folders of a media folder in Umbraco 8. I'm using the MediaService to get a root media item (folder) like this:

    var challengesRootFolder = ms.GetRootMedia().FirstOrDefault(x => x.Name.InvariantEquals("Challenges"));

    Now I can use the MediaService to check if the IMedia item has children using the .HasChildren() method.

    Is there any way to get all the child folders as IEnumerable<IMedia> from the challengesRootFolder in the code snippet?

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  • Kevin Jump 1867 posts 11859 karma points MVP 4x c-trib
    Apr 22, 2020 @ 15:51
    Kevin Jump
    100

    Hi,

    you can get the child items through 

            ms.GetPagedChildren(item.Id, 0, 100, out long total);

    this would get the first 100 items (nothing but performance stopping you upping the pageSize variable)

    a more comprehensive way to get everything

    const int pageSize = 500;
var page = 0;
var total = long.MaxValue;
while(page * pageSize < total)
{
  var children = ms.GetPagedChildren(item.Id, page++, pageSize, out total);

  // do stuff wit the child items
}

    Also GetPagedDescendants will get all items down the tree.

    Update: Just getting folders is a little more complex, but you can see how Umbraco does it in the source for the media controller https://github.com/umbraco/Umbraco-CMS/blob/v8/contrib/src/Umbraco.Web/Editors/MediaController.cs#L196

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  • Koen van Ras 55 posts 315 karma points c-trib
    Apr 22, 2020 @ 16:20
    Koen van Ras
    0

    Thanks this worked! I managed to get only folders by simply adding a Where to check the ContentType.Alias in the while loop. Like this:

    children.AddRange(ms.GetPagedChildren(challengesRootFolder.Id, page++, pageSize, out total)
                    .Where(x => x.ContentType.Alias == Constants.Conventions.MediaTypes.Folder));
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