Add attachment

Namespace: microsoft.graph

Use this API to add an attachment to an existing event. This operation limits the size of the attachment you can add to under 3 MB.

If an organizer adds an attachment to a meeting event, the organizer can subsequently update the event to send the attachment and update the event for each attendee as well.

Permissions

One of the following permissions is required to call this API. To learn more, including how to choose permissions, see Permissions.

Permission type	Permissions (from least to most privileged)
Delegated (work or school account)	Calendars.ReadWrite
Delegated (personal Microsoft account)	Calendars.ReadWrite
Application	Calendars.ReadWrite

HTTP request

Attachments for an event in the user's default calendar.

POST /me/events/{id}/attachments
POST /users/{id | userPrincipalName}/events/{id}/attachments

POST /me/calendar/events/{id}/attachments
POST /users/{id | userPrincipalName}/calendar/events/{id}/attachments

Attachments for an event in a calendar belonging to the user's default calendarGroup.

POST /me/calendars/{id}/events/{id}/attachments
POST /users/{id | userPrincipalName}/calendars/{id}/events/{id}/attachments

Attachments for an event in a calendar belonging to a user's calendarGroup.

POST /me/calendargroups/{id}/calendars/{id}/events/{id}/attachments
POST /users/{id | userPrincipalName}/calendargroups/{id}/calendars/{id}/events/{id}/attachments

Request headers

Name	Type	Description
Authorization	string	Bearer {token}. Required.
Content-Type	string	Nature of the data in the body of an entity. Required.

Request body

In the request body, supply a JSON representation of attachment object.

Response

If successful, this method returns 201 Created response code and attachment object in the response body.

Example (file attachment)

Request

Here is an example of the request.

HTTP

POST https://graph.microsoft.com/v1.0/me/events/AAMkAGI1AAAt9AHjAAA=/attachments
Content-type: application/json

{
    "@odata.type": "#microsoft.graph.fileAttachment",
    "name": "menu.txt",
    "contentBytes": "base64bWFjIGFuZCBjaGVlc2UgdG9kYXk="   
}

C#

var graphClient = new GraphServiceClient(requestAdapter);

var requestBody = new Attachment
{
	OdataType = "#microsoft.graph.fileAttachment",
	Name = "menu.txt",
	AdditionalData = new Dictionary<string, object>
	{
		{
			"contentBytes" , "base64bWFjIGFuZCBjaGVlc2UgdG9kYXk="
		},
	},
};
var result = await graphClient.Me.Events["{event-id}"].Attachments.PostAsync(requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

JavaScript

const options = {
	authProvider,
};

const client = Client.init(options);

const attachment = {
    '@odata.type': '#microsoft.graph.fileAttachment',
    name: 'menu.txt',
    contentBytes: 'base64bWFjIGFuZCBjaGVlc2UgdG9kYXk='   
};

await client.api('/me/events/AAMkAGI1AAAt9AHjAAA=/attachments')
	.post(attachment);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Java

GraphServiceClient graphClient = GraphServiceClient.builder().authenticationProvider( authProvider ).buildClient();

FileAttachment attachment = new FileAttachment();
attachment.name = "menu.txt";
attachment.contentBytes = Base64.getDecoder().decode("base64bWFjIGFuZCBjaGVlc2UgdG9kYXk=");

graphClient.me().events("AAMkAGI1AAAt9AHjAAA=").attachments()
	.buildRequest()
	.post(attachment);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Go

//THE GO SDK IS IN PREVIEW. NON-PRODUCTION USE ONLY
graphClient := msgraphsdk.NewGraphServiceClientWithCredentials(cred, scopes)

requestBody := graphmodels.NewAttachment()
name := "menu.txt"
requestBody.SetName(&name) 
additionalData := map[string]interface{}{
	"contentBytes" : "base64bWFjIGFuZCBjaGVlc2UgdG9kYXk=", 
}
requestBody.SetAdditionalData(additionalData)

result, err := graphClient.Me().EventsById("event-id").Attachments().Post(context.Background(), requestBody, nil)

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PowerShell

Import-Module Microsoft.Graph.Calendar

$params = @{
	"@odata.type" = "#microsoft.graph.fileAttachment"
	Name = "menu.txt"
	ContentBytes = "base64bWFjIGFuZCBjaGVlc2UgdG9kYXk="
}

# A UPN can also be used as -UserId.
New-MgUserEventAttachment -UserId $userId -EventId $eventId -BodyParameter $params

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PHP

<?php

// THIS SNIPPET IS A PREVIEW FOR THE KIOTA BASED SDK. NON-PRODUCTION USE ONLY
$graphServiceClient = new GraphServiceClient($requestAdapter);

$requestBody = new Attachment();
$requestBody->set@odatatype('#microsoft.graph.fileAttachment');

$requestBody->setName('menu.txt');

$additionalData = [
'contentBytes' => 'base64bWFjIGFuZCBjaGVlc2UgdG9kYXk=', 
];
$requestBody->setAdditionalData($additionalData);




$requestResult = $graphServiceClient->me()->eventsById('event-id')->attachments()->post($requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

In the request body, supply a JSON representation of attachment object.

Response

Here is an example of the response.

HTTP 201 Created
Content-type: application/json

{
    "@odata.context":"https://graph.microsoft.com/v1.0/$metadata#users('cd209b0b-3f83-4c35-82d2-d88a61820480')/events('AAMkAGI1AAAt9AHjAAA%3D')/attachments/$entity",
    "@odata.type":"#microsoft.graph.fileAttachment",
    "id":"AAMkAGI1AAAt9AHjAAABEgAQAEdBogju-MJEu6Ngg-1_W0g=",
    "lastModifiedDateTime":"2017-04-15T03:21:49Z",
    "name":"menu.txt",
    "contentType":"text/plain",
    "size":178,
    "isInline":false,
    "contentId":null,
    "contentLocation":null,
    "contentBytes":"bWFjIGFuZCBjaGVlc2UgdG9kYXk="
}

Example (item attachment)

Request

Here is an example which attaches an event with another event as an item attachment.

HTTP

POST https://graph.microsoft.com/v1.0/me/events/AAMkAGI1AAAt9AHjAAA=/attachments
Content-type: application/json

{
  "@odata.type": "#microsoft.graph.itemAttachment",
  "name": "Holiday event", 
  "item": {
        "@odata.type": "microsoft.graph.event",
        "subject": "Discuss gifts for children",
        "body": {
            "contentType": "HTML",
            "content": "Let's look for funding!"
         },
         "start": {
             "dateTime": "2016-12-02T18:00:00",
             "timeZone": "Pacific Standard Time"
          },
          "end": {
             "dateTime": "2016-12-02T19:00:00",
             "timeZone": "Pacific Standard Time"
          }
    }
}

C#

var graphClient = new GraphServiceClient(requestAdapter);

var requestBody = new Attachment
{
	OdataType = "#microsoft.graph.itemAttachment",
	Name = "Holiday event",
	AdditionalData = new Dictionary<string, object>
	{
		{
			"item" , new 
			{
				OdataType = "microsoft.graph.event",
				Subject = "Discuss gifts for children",
				Body = new 
				{
					ContentType = "HTML",
					Content = "Let's look for funding!",
				},
				Start = new 
				{
					DateTime = "2016-12-02T18:00:00",
					TimeZone = "Pacific Standard Time",
				},
				End = new 
				{
					DateTime = "2016-12-02T19:00:00",
					TimeZone = "Pacific Standard Time",
				},
			}
		},
	},
};
var result = await graphClient.Me.Events["{event-id}"].Attachments.PostAsync(requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

JavaScript

const options = {
	authProvider,
};

const client = Client.init(options);

const attachment = {
  '@odata.type': '#microsoft.graph.itemAttachment',
  name: 'Holiday event', 
  item: {
        '@odata.type': 'microsoft.graph.event',
        subject: 'Discuss gifts for children',
        body: {
            contentType: 'HTML',
            content: 'Let\'s look for funding!'
         },
         start: {
             dateTime: '2016-12-02T18:00:00',
             timeZone: 'Pacific Standard Time'
          },
          end: {
             dateTime: '2016-12-02T19:00:00',
             timeZone: 'Pacific Standard Time'
          }
    }
};

await client.api('/me/events/AAMkAGI1AAAt9AHjAAA=/attachments')
	.post(attachment);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Java

GraphServiceClient graphClient = GraphServiceClient.builder().authenticationProvider( authProvider ).buildClient();

ItemAttachment attachment = new ItemAttachment();
attachment.name = "Holiday event";
Event item = new Event();
item.subject = "Discuss gifts for children";
ItemBody body = new ItemBody();
body.contentType = BodyType.HTML;
body.content = "Let's look for funding!";
item.body = body;
DateTimeTimeZone start = new DateTimeTimeZone();
start.dateTime = "2016-12-02T18:00:00";
start.timeZone = "Pacific Standard Time";
item.start = start;
DateTimeTimeZone end = new DateTimeTimeZone();
end.dateTime = "2016-12-02T19:00:00";
end.timeZone = "Pacific Standard Time";
item.end = end;
attachment.item = item;

graphClient.me().events("AAMkAGI1AAAt9AHjAAA=").attachments()
	.buildRequest()
	.post(attachment);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Go

//THE GO SDK IS IN PREVIEW. NON-PRODUCTION USE ONLY
graphClient := msgraphsdk.NewGraphServiceClientWithCredentials(cred, scopes)

requestBody := graphmodels.NewAttachment()
name := "Holiday event"
requestBody.SetName(&name) 
additionalData := map[string]interface{}{
item := graphmodels.New()
subject := "Discuss gifts for children"
item.SetSubject(&subject) 
body := graphmodels.New()
contentType := "HTML"
body.SetContentType(&contentType) 
content := "Let's look for funding!"
body.SetContent(&content) 
	item.SetBody(body)
start := graphmodels.New()
dateTime := "2016-12-02T18:00:00"
start.SetDateTime(&dateTime) 
timeZone := "Pacific Standard Time"
start.SetTimeZone(&timeZone) 
	item.SetStart(start)
end := graphmodels.New()
dateTime := "2016-12-02T19:00:00"
end.SetDateTime(&dateTime) 
timeZone := "Pacific Standard Time"
end.SetTimeZone(&timeZone) 
	item.SetEnd(end)
	requestBody.SetItem(item)
}
requestBody.SetAdditionalData(additionalData)

result, err := graphClient.Me().EventsById("event-id").Attachments().Post(context.Background(), requestBody, nil)

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PowerShell

Import-Module Microsoft.Graph.Calendar

$params = @{
	"@odata.type" = "#microsoft.graph.itemAttachment"
	Name = "Holiday event"
	Item = @{
		"@odata.type" = "microsoft.graph.event"
		Subject = "Discuss gifts for children"
	}
}

# A UPN can also be used as -UserId.
New-MgUserEventAttachment -UserId $userId -EventId $eventId -BodyParameter $params

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PHP

<?php

// THIS SNIPPET IS A PREVIEW FOR THE KIOTA BASED SDK. NON-PRODUCTION USE ONLY
$graphServiceClient = new GraphServiceClient($requestAdapter);

$requestBody = new Attachment();
$requestBody->set@odatatype('#microsoft.graph.itemAttachment');

$requestBody->setName('Holiday event');

$additionalData = [
'item' => $requestBody = new Item();
$		requestBody->set@odatatype('microsoft.graph.event');

$		requestBody->setSubject('Discuss gifts for children');

$body = new Body();
$		body->setContentType('HTML');

$		body->setContent('Let\'s look for funding!');


$requestBody->setBody($body);
$start = new Start();
$		start->setDateTime('2016-12-02T18:00:00');

$		start->setTimeZone('Pacific Standard Time');


$requestBody->setStart($start);
$end = new End();
$		end->setDateTime('2016-12-02T19:00:00');

$		end->setTimeZone('Pacific Standard Time');


$requestBody->setEnd($end);

$requestBody->setItem($item);

];
$requestBody->setAdditionalData($additionalData);




$requestResult = $graphServiceClient->me()->eventsById('event-id')->attachments()->post($requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Response

Here is an example of the response.

HTTP 201 Created
Content-type: application/json

{
    "@odata.context":"https://graph.microsoft.com/v1.0/$metadata#me/events('AAMkAGI1AAAt9AHjAAA=')/attachments/$entity",
    "@odata.type":"#microsoft.graph.itemAttachment",
    "@odata.id":"https://graph.microsoft.com/v1.0/users('fdcbcf34-2505-4d07-be5b-0a55b699d157@41a5b830-45ac-4f1b-9bfc-baafa3b7db2e')/events('AAMkAGI1AAAt9AHjAAA=')/attachments('AAMkADNkN2Jp5JVnQIe9r0=')",
    "id":"AAMkADNkNJp5JVnQIe9r0=",
    "lastModifiedDateTime":"2016-12-01T22:27:13Z",
    "name":"Holiday event",
    "contentType":null,
    "size":2473,
    "isInline":false
}