Exclude Files in Graph Search

Question

Hello best community in the world ;-)

I have a question again :-)

You can easily search for data items with the MS Graph SDK.
C# Example:

GraphServiceClient graphClient = new GraphServiceClient( authProvider );

var search = await graphClient.Me.Drive.Root
    .Search("Contoso Project")
    .Request()
    .GetAsync()

But how do I search only for folders, because files can also be called like folders and I want to exclude files in a search.

Is there a way to do this with the Graph SDK ?

About an answer I would be very happy.

Greetings

Answer 1

There might be a more elegant way to do this, but this looks like it works:

https://graph.microsoft.com/v1.0/me/drive/root/search(q='a')?filter=folder ne null

For reference:
This uses the "filter" parameter:
https://learn.microsoft.com/en-us/graph/query-parameters#filter-parameter

"DriveItem" has a "folder" property that's only present for folders, so that just checks if "folder" ne (not-equals) null:
https://learn.microsoft.com/en-us/graph/api/resources/driveitem?view=graph-rest-1.0#properties

I've not used the MS graph SDK myself but I believe your code should just be:

GraphServiceClient graphClient = new GraphServiceClient( authProvider );  
      
var search = await graphClient.Me.Drive.Root  
    .Search("Contoso Project")  
    .Request()  
    .Filter("folder ne null")  
    .GetAsync();