[Client bug]: .Copy.PostAsync(requestBody) return null.

[nklchaudhary]

I am using the C# code provided on link

https://learn.microsoft.com/en-us/graph/api/driveitem-copy?view=graph-rest-1.0&tabs=csharp

to copy folder or files. It work well but always return null.

var requestBody = new CopyPostRequestBody
{
ParentReference = new ItemReference
{
DriveId = "6F7D00BF-FC4D-4E62-9769-6AEA81F3A21B",
Id = "DCD0D3AD-8989-4F23-A5A2-2C086050513F",
},
Name = "contoso plan (copy).txt",
};

var result = graphClient.Drives["{drive-id}"].Items["{driveItem-id}"].Copy.PostAsync(requestBody).GetAwaiter().GetResult();

Please suggest solution for it.

[andrueastman]

Thanks for raising this @nklchaudhary

According to the REST documentation, the specific API does not return a body(202 response). Hence the null value.
To obtain the location header, you can pass options as below to get the location of the monitor.

            var requestBody = new CopyPostRequestBody
            {
                ParentReference = new ItemReference
                {
                    DriveId = "6F7D00BF-FC4D-4E62-9769-6AEA81F3A21B",
                    Id = "DCD0D3AD-8989-4F23-A5A2-2C086050513F",
                },
                Name = "contoso plan (copy).txt",
            };
            var headersInspectionHandlerOption = new HeadersInspectionHandlerOption()
            {
                InspectResponseHeaders = true // specific you wish to collect reponse headers
            };
            var result = await graphClient.Drives["{drive-id}"].Items["{driveItem-id}"].Copy.PostAsync(requestBody, requestConfiguration => requestConfiguration.Options.Add(headersInspectionHandlerOption));

            var locationHeader = headersInspectionHandlerOption.ResponseHeaders["Location"];

The SDK does not support monitoring long running operations as described in the docs below, (this is tracked via microsoftgraph/msgraph-sdk-design#83)
https://learn.microsoft.com/en-us/graph/long-running-actions-overview?tabs=http

[nklchaudhary]

Thank for responce. It help me a lot.