How to get Sharepoint ListItem on DriveItem with Microsoft Graph API c#

Question

The newly added DriveItem object returns the listItem field as null, which means that the relationship between DriveItem and ListItem offered by Graph Api cannot be used.

I created new DriveItem:

var driveItemResult= await CreateGraphClient().Groups[_options.GroupId].Sites[_options.SiteId]
                        .Drives[_driveOptions.DriveId]
                        .Root
                        .Children
                        .Request()
                        .AddAsync(driveItem).ConfigureAwait(false);

Now I would like to update custom columns in it. I know this is possible if you get driveItem as listItem. So I would like to do this:

var listItem= await CreateGraphClient().Groups[_options.GroupId].Sites[_options.SiteId]
                        .Lists[_listOptions.ListTitle]
                        .Items[driveItemResultId]
                        .Request()
                        .AddAsync(driveItem).ConfigureAwait(false);

But driveItemResult.Id returns Guid. I need Id as number to take Item from list. And driveItem has property listItem. So I thought I can get correct id if I take driveItem.ListItem.Id but driveItem.ListItem is always null.

Do you know what could caused this behavior or how to get correct id?

Answer 1

You can get the list item through below code:

CreateGraphClient().Groups[_options.GroupId].Sites[_options.SiteId]
                    .Drives[_driveOptions.DriveId]
                    .Items[driveitemid]
                    .ListItem
                    .Request().GetAsync()

Listitem is a expand property of driveitem, by default it has not been initialized. so we need to request it again.

BR