Specifying request headers using C# Office Graph SDK client

Question

I am interacting with Office graph using C# Office Graph SDK. I need to create specific request header, while I am using GraphServiceClient and RequestBuilder to create the request. How can I achieve that?

Vena

Answer 1

To set custom header for the request, you need to create Option collection. To add headers, you need to add new item of type HeaderOption to this collection. See code sample bellow:

List<Option> options = new List<Option>
{
   //Creating query parameters
   new QueryOption("filter", $"(start/dateTime le '{DateTime.Now.AddMinutes(5).ToString("yyyy-MM-ddTHH:mm")}')),

   //Creating header
   new HeaderOption("Prefer","outlook.timezone=\"Europe/Budapest\"")
};

var res = await graphClient.Users["userId"].Events.Request(options).GetAsync();

Vena

I discovered through trial and error that this is the better way to do this as it allows the ability to write functional unit tests that mock the graph client. The alternative way is to use the Header in the chain of the call after the request. – Jurgen

Answer 2

In the MSGraph v5 SDK and there is no Microsoft.Graph.Option class nor is there a Request method. Headers are added using the requestConfiguration modifier as follows

var message = await graphServiceClient.Me.Messages["message-id"] .GetAsync((requestConfiguration) =>{requestConfiguration.Headers.Add("Etag", "etag"); requestConfiguration.Headers.Add("If-Match", "ifmatch");});

Apriorism

This does not provide an answer to the question. Once you have sufficient reputation you will be able to comment on any post; instead, provide answers that don't require clarification from the asker. - From Review – Ammo

That worked for me. Thank you! – Bursiform

My first thank you! Nice to help someone else for a change. – Apriorism