How to get calendar events or reservations from Room resource using Graph Client

Question

Hi I'm trying to get the events from the room mailbox using graph client. Like we retrieve events from the user calendar as follows.

var queryOptions = new List<QueryOption>()
        {
               new QueryOption("startDateTime", startDateTime),
               new QueryOption("endDateTime", endDateTime)
        };

       var calendarView = await graphClient.Users[{user_id}].CalendarView
             .Request(queryOptions)
             .GetAsync();

Is there any way to fetch events from the room calendar using graph client.

I need all reservations of room resources. That includes any user reservation in that room.

Any help is appreciated.

Answer 1

Take a look at and adjust as needed:

https://github.com/lazywinadmin/PowerShell/blob/master/O365-Get-O365CalendarEvent/O365-Get-O365CalendarEvent.ps1

https://lazywinadmin.com/2015/06/powershell-using-office-365-rest-api-to.html

Answer 2

@Sumith Jose , Thank you for reaching out. To get the schedule for a room, you can use the following Microsoft Graph API:

HTTP:

POST https://graph.microsoft.com/v1.0/me/calendar/getSchedule   
Prefer: outlook.timezone="Pacific Standard Time"  
Content-Type: application/json  
  
{          
    "schedules": ["******@contoso.onmicrosoft.com", "******@contoso.onmicrosoft.com"],  
    "startTime": {  
        "dateTime": "2019-03-15T09:00:00",  
        "timeZone": "Pacific Standard Time"  
    },  
    "endTime": {  
        "dateTime": "2019-03-15T18:00:00",  
        "timeZone": "Pacific Standard Time"  
    },  
    "availabilityViewInterval": 60  
}  

For C#:

GraphServiceClient graphClient = new GraphServiceClient( authProvider );  
  
var schedules = new List<String>()  
{  
	"******@contoso.onmicrosoft.com",  
	"******@contoso.onmicrosoft.com"  
};  
  
var startTime = new DateTimeTimeZone  
{  
	DateTime = "2019-03-15T09:00:00",  
	TimeZone = "Pacific Standard Time"  
};  
  
var endTime = new DateTimeTimeZone  
{  
	DateTime = "2019-03-15T18:00:00",  
	TimeZone = "Pacific Standard Time"  
};  
  
var availabilityViewInterval = 60;  
  
await graphClient.Me.Calendar  
	.GetSchedule(schedules,endTime,startTime,availabilityViewInterval)  
	.Request()  
	.Header("Prefer","outlook.timezone=\"Pacific Standard Time\"")  
	.PostAsync();  

You can find more details around this api here: https://learn.microsoft.com/en-us/graph/api/calendar-getschedule?view=graph-rest-1.0&tabs=csharp

Hope this helps.

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