Microsoft Graph - 搜索 OneDrive

Question

Based on the Microsoft Graph REST API documentation , we have Xamarin/C# code that looks something like this:

var graphClient = new GraphServiceClient(
   new DelegateAuthenticationProvider(
      (requestMessage) =>
         {
            requestMessage.Headers.Authorization = new AuthenticationHeaderValue("bearer", accessToken);
            return (Task.FromResult(0));
         }
      ));
IDriveItemSearchCollectionPage search = await graphClient.Me.Drive.Root
   .Search("{search-query}")
   .Request()
   .GetAsync();

The problem is, I can't find any documentation about what "{search-query}" can be. By trial and error, it appears that:

1. Searching for "A" finds all files that contain an "A" in their name or contents
2. Searching for "{search-query}" returns a couple of files, I have no idea why
3. Searching for "filename:A" returns nothing even though I have a few files that contain "A" in their name

I want to search for all files whose name contains a certain substring, but if I search for "*" or "filename:A*" or "filename:A%2A" it throws a ServiceException with the code UnknownError.

Question 1 : How do I pass a wildcard to the Search() function?

Then, when I do get results, it's a Microsoft.Graph.DriveItemSearchCollectionPage , I can enumerate through that and get a bunch of DriveItem objects. DriveItem has a property named "Folder" that is sometimes non-null , but it's an object of type Microsoft.Graph.Folder and Intellisense indicates there is no way to get the name of the folder. And the current version of Visual Studio Mac is screwy, if I right-click on a folder and select "Go To Declaration" it immediately hangs and uses 100% CPU and never returns, I have to Force Quit.

Question 2 : How do I get the name of a folder when I have a Microsoft.Graph.Folder ?

Answer 1

I'm not familiar with the Drive search query syntax.

I can say that when the Folder property is non-null, it indicates that the DriveItem is a folder. You'll use DriveItem.Name to get the name of the folder.