(.NET Core C#) Outlook Calendar Create an Event

See more Outlook Calendar Examples

Create an event in the specified time zone, and assign the event an optional transactionId value.

For more information, see https://docs.microsoft.com/en-us/graph/api/user-post-events?view=graph-rest-1.0&tabs=http#example-1-create-an-event-in-the-specified-time-zone-and-assign-the-event-an-optional-transactionid-value

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// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Http http = new Chilkat.Http();

// Use your previously obtained access token here: Get Outlook Calendar OAuth2 Access Token (Azure AD v2.0 Endpoint).

Chilkat.JsonObject jsonToken = new Chilkat.JsonObject();
bool success = jsonToken.LoadFile("qa_data/tokens/outlookCalendar.json");
if (success == false) {
    Debug.WriteLine(jsonToken.LastErrorText);
    return;
}

http.AuthToken = jsonToken.StringOf("access_token");

// Send the following POST:

// POST https://graph.microsoft.com/v1.0/me/events
// Prefer: outlook.timezone="Pacific Standard Time"
// Content-type: application/json
// 
// {
//   "subject": "Let's go for lunch",
//   "body": {
//     "contentType": "HTML",
//     "content": "Does noon work for you?"
//   },
//   "start": {
//       "dateTime": "2017-04-15T12:00:00",
//       "timeZone": "Pacific Standard Time"
//   },
//   "end": {
//       "dateTime": "2017-04-15T14:00:00",
//       "timeZone": "Pacific Standard Time"
//   },
//   "location":{
//       "displayName":"Harry's Bar"
//   },
//   "attendees": [
//     {
//       "emailAddress": {
//         "address":"samanthab@contoso.onmicrosoft.com",
//         "name": "Samantha Booth"
//       },
//       "type": "required"
//     }
//   ],
//   "allowNewTimeProposals": true,
//   "transactionId":"7E163156-7762-4BEB-A1C6-729EA81755A7"
// }

// Build the JSON body of the POST.
Chilkat.JsonObject json = new Chilkat.JsonObject();
json.UpdateString("subject","Let's go for lunch");
json.UpdateString("body.contentType","HTML");
json.UpdateString("body.content","Does noon work for you?");
json.UpdateString("start.dateTime","2021-05-15T12:00:00");
json.UpdateString("start.timeZone","Pacific Standard Time");
json.UpdateString("end.dateTime","2021-05-15T14:00:00");
json.UpdateString("end.timeZone","Pacific Standard Time");
json.UpdateString("location.displayName","Harry's Bar");
json.UpdateString("attendees[0].emailAddress.address","samanthab@contoso.onmicrosoft.com");
json.UpdateString("attendees[0].emailAddress.name","Samantha Booth");
json.UpdateString("attendees[0].type","required");
json.UpdateBool("allowNewTimeProposals",true);

// Generate a UUID.
Chilkat.Crypt2 crypt = new Chilkat.Crypt2();
json.UpdateString("transactionId",crypt.GenerateUuid());

// Add the "Prefer" request header.
http.SetRequestHeader("Prefer","outlook.timezone=\"Pacific Standard Time\"");

// Send the HTTP POST
Chilkat.HttpResponse resp = http.PostJson2("https://graph.microsoft.com/v1.0/me/events","application/json",json.Emit());
if (http.LastMethodSuccess != true) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

Debug.WriteLine("Response status code = " + Convert.ToString(resp.StatusCode));

Chilkat.JsonObject jResp = new Chilkat.JsonObject();
jResp.Load(resp.BodyStr);
jResp.EmitCompact = false;
Debug.WriteLine(jResp.Emit());

// The send succeeded if the response status code = 201.
if (resp.StatusCode != 201) {
    Debug.WriteLine("Failed");
    return;
}

// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)

// {
//   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('user%40example.com')/events/$entity",
//   "@odata.etag": "W/\"5+vF7TKKdE6bGCRqXyl2PQAEaGQgcw==\"",
//   "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgENAAAA5_vF7TKKdE6bGCRqXyl2PQAEaDkEcAAAAA==",
//   "createdDateTime": "2021-04-18T23:38:52.1979259Z",
//   "lastModifiedDateTime": "2021-04-18T23:38:53.3747647Z",
//   "changeKey": "5+vF7TKKdE6bGCRqXyl2PQAEaGQgcw==",
//   "categories": [
//   ],
//   "transactionId": "1d12b565-3ca3-4ed8-b3f9-e8a14ac3ac17",
//   "originalStartTimeZone": "Pacific Standard Time",
//   "originalEndTimeZone": "Pacific Standard Time",
//   "iCalUId": "040000008200E00074C5B7101A82E00800000000EF0328FDAB34D7010000000000000000100000004478DD5948382543AFD1B52C25E88C02",
//   "reminderMinutesBeforeStart": 15,
//   "isReminderOn": true,
//   "hasAttachments": false,
//   "subject": "Let's go for lunch",
//   "bodyPreview": "Does noon work for you?",
//   "importance": "normal",
//   "sensitivity": "normal",
//   "isAllDay": false,
//   "isCancelled": false,
//   "isOrganizer": true,
//   "responseRequested": true,
//   "seriesMasterId": null,
//   "showAs": "busy",
//   "type": "singleInstance",
//   "webLink": "https://outlook.live.com/owa/?itemid=AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5%2BvF7TKKdE6bGCRqXyl2PQAAAgENAAAA5%2BvF7TKKdE6bGCRqXyl2PQAEaDkEcAAAAA%3D%3D&exvsurl=1&path=/calendar/item",
//   "onlineMeetingUrl": null,
//   "isOnlineMeeting": false,
//   "onlineMeetingProvider": "unknown",
//   "allowNewTimeProposals": true,
//   "isDraft": false,
//   "hideAttendees": false,
//   "recurrence": null,
//   "onlineMeeting": null,
//   "responseStatus": {
//     "response": "organizer",
//     "time": "0001-01-01T00:00:00Z"
//   },
//   "body": {
//     "contentType": "html",
//     "content": "<html>\r\n<head>\r\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\r\n<meta content=\"text/html; charset=us-ascii\">\r\n</head>\r\n<body>\r\nDoes noon work for you?\r\n</body>\r\n</html>\r\n"
//   },
//   "start": {
//     "dateTime": "2021-05-15T12:00:00.0000000",
//     "timeZone": "Pacific Standard Time"
//   },
//   "end": {
//     "dateTime": "2021-05-15T14:00:00.0000000",
//     "timeZone": "Pacific Standard Time"
//   },
//   "location": {
//     "displayName": "Harry's Bar",
//     "locationType": "default",
//     "uniqueId": "Harry's Bar",
//     "uniqueIdType": "private"
//   },
//   "locations": [
//     {
//       "displayName": "Harry's Bar",
//       "locationType": "default",
//       "uniqueId": "Harry's Bar",
//       "uniqueIdType": "private"
//     }
//   ],
//   "attendees": [
//     {
//       "type": "required",
//       "status": {
//         "response": "none",
//         "time": "0001-01-01T00:00:00Z"
//       },
//       "emailAddress": {
//         "name": "Samantha Booth",
//         "address": "samanthab@contoso.onmicrosoft.com"
//       }
//     }
//   ],
//   "organizer": {
//     "emailAddress": {
//       "name": "John Doe",
//       "address": "outlook_3A33FCEB9B74CC15@outlook.com"
//     }
//   }
// }

// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON

string displayName;
string locationType;
string uniqueId;
string uniqueIdType;
string statusResponse;
string statusTime;
string emailAddressName;
string emailAddressAddress;

string odata_context = jResp.StringOf("\"@odata.context\"");
string odata_etag = jResp.StringOf("\"@odata.etag\"");
string id = jResp.StringOf("id");
string createdDateTime = jResp.StringOf("createdDateTime");
string lastModifiedDateTime = jResp.StringOf("lastModifiedDateTime");
string changeKey = jResp.StringOf("changeKey");
string transactionId = jResp.StringOf("transactionId");
string originalStartTimeZone = jResp.StringOf("originalStartTimeZone");
string originalEndTimeZone = jResp.StringOf("originalEndTimeZone");
string iCalUId = jResp.StringOf("iCalUId");
int reminderMinutesBeforeStart = jResp.IntOf("reminderMinutesBeforeStart");
bool isReminderOn = jResp.BoolOf("isReminderOn");
bool hasAttachments = jResp.BoolOf("hasAttachments");
string subject = jResp.StringOf("subject");
string bodyPreview = jResp.StringOf("bodyPreview");
string importance = jResp.StringOf("importance");
string sensitivity = jResp.StringOf("sensitivity");
bool isAllDay = jResp.BoolOf("isAllDay");
bool isCancelled = jResp.BoolOf("isCancelled");
bool isOrganizer = jResp.BoolOf("isOrganizer");
bool responseRequested = jResp.BoolOf("responseRequested");
string seriesMasterId = jResp.StringOf("seriesMasterId");
string showAs = jResp.StringOf("showAs");
string v_type = jResp.StringOf("type");
string webLink = jResp.StringOf("webLink");
string onlineMeetingUrl = jResp.StringOf("onlineMeetingUrl");
bool isOnlineMeeting = jResp.BoolOf("isOnlineMeeting");
string onlineMeetingProvider = jResp.StringOf("onlineMeetingProvider");
bool allowNewTimeProposals = jResp.BoolOf("allowNewTimeProposals");
bool isDraft = jResp.BoolOf("isDraft");
bool hideAttendees = jResp.BoolOf("hideAttendees");
string recurrence = jResp.StringOf("recurrence");
string onlineMeeting = jResp.StringOf("onlineMeeting");
string responseStatusResponse = jResp.StringOf("responseStatus.response");
string responseStatusTime = jResp.StringOf("responseStatus.time");
string bodyContentType = jResp.StringOf("body.contentType");
string bodyContent = jResp.StringOf("body.content");
string startDateTime = jResp.StringOf("start.dateTime");
string startTimeZone = jResp.StringOf("start.timeZone");
string endDateTime = jResp.StringOf("end.dateTime");
string endTimeZone = jResp.StringOf("end.timeZone");
string locationDisplayName = jResp.StringOf("location.displayName");
string locationLocationType = jResp.StringOf("location.locationType");
string locationUniqueId = jResp.StringOf("location.uniqueId");
string locationUniqueIdType = jResp.StringOf("location.uniqueIdType");
string organizerEmailAddressName = jResp.StringOf("organizer.emailAddress.name");
string organizerEmailAddressAddress = jResp.StringOf("organizer.emailAddress.address");
int i = 0;
int count_i = jResp.SizeOfArray("categories");
while (i < count_i) {
    jResp.I = i;
    i = i + 1;
}

i = 0;
count_i = jResp.SizeOfArray("locations");
while (i < count_i) {
    jResp.I = i;
    displayName = jResp.StringOf("locations[i].displayName");
    locationType = jResp.StringOf("locations[i].locationType");
    uniqueId = jResp.StringOf("locations[i].uniqueId");
    uniqueIdType = jResp.StringOf("locations[i].uniqueIdType");
    i = i + 1;
}

i = 0;
count_i = jResp.SizeOfArray("attendees");
while (i < count_i) {
    jResp.I = i;
    v_type = jResp.StringOf("attendees[i].type");
    statusResponse = jResp.StringOf("attendees[i].status.response");
    statusTime = jResp.StringOf("attendees[i].status.time");
    emailAddressName = jResp.StringOf("attendees[i].emailAddress.name");
    emailAddressAddress = jResp.StringOf("attendees[i].emailAddress.address");
    i = i + 1;
}

Debug.WriteLine("Event created.");