How to get itemid of a file to be downloaded from Sharepoint folder which is under sub-sub folders using Graph APIs

Question

We can download a given file if we know the itemid of the file to be downloaded using below

https://graph.microsoft.com/v1.0/sites/{{siteid}}/drive/items/{{itemid}}/content

But how could we get the itemid of a file (test123.csv) which is present under sub-sub folder level

e.g. Folder A -> Subfolder B -> Subfolder C -> SUbfolder D -> test123.csv

We can display root -> Children and get the id of next Subfolder level but how can we get at even lower levels and that too with Graph API (not with other REST APIs)?

Answer 1

Hello Patil, Vinod V

Thanks for reaching out!

To get the item-ID of a file that is present in a multi-subfolder level using Graph API, you need to list children of a drive and traverse through the folder structure by using '/children' endpoint. This needs to be done recursively to reach the target folder (The item-ID needs to be replaced with lower-level folder (Item-ID)). The response will have id, name of items and other details. You can identify whether an item is a folder or a file by looking for "files" or "folder" property for that specific Item in response. Refer drive Items resource.

To list children in the root of the current user's drive: This will list all the items (folders and files) along with the Item-IDs present in drive at root level.

GET /me/drive/root/children

To list children of a DriveItem with a known path: This returns the list of items in the children collection of the target item. Refer this.

GET /drives/{drive-id}/root:/{path-relative-to-root}:/children

Hope this helps.

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