public static async Task <string> GetSharingLinkAsync(string Id)
{
string sharingLinkUrl = null;
JObject jResult = null;
try
{
HttpClient client = new HttpClient();
var token = await AuthenticationHelper.GetTokenForUserAsync();
client.DefaultRequestHeaders.Add("Authorization", "Bearer " + token);
string postContent = "{'type': 'view','scope': 'anonymous'}";
var createBody = new StringContent(postContent, System.Text.Encoding.UTF8, "application/json");
Uri photoEndpoint = new Uri("https://graph.microsoft.com/v1.0/me/drive/items/" + Id + "/createLink");
HttpResponseMessage response = await client.PostAsync(photoEndpoint, createBody);
if (response.IsSuccessStatusCode)
{
string responseContent = await response.Content.ReadAsStringAsync();
jResult = JObject.Parse(responseContent);
JToken sharingLink = jResult["link"];
sharingLinkUrl = (string)sharingLink["webUrl"];
}
else
{
return(null);
}
}
catch (Exception e)
{
throw new Exception("We could not get the sharing link. The request returned this status code: " + e.Message);
}
return(sharingLinkUrl);
}
/// <summary>
/// Compose and send a new email.
/// </summary>
/// <param name="subject">The subject line of the email.</param>
/// <param name="bodyContent">The body of the email.</param>
/// <param name="recipients">A semicolon-separated list of email addresses.</param>
/// <returns></returns>
internal async Task ComposeAndSendMailAsync(string subject,
string bodyContent,
string recipients)
{
// Get current user photo
Stream photoStream = await GetCurrentUserPhotoStreamAsync();
// If the user doesn't have a photo, or if the user account is MSA, we use a default photo
if (photoStream == null)
{
StorageFile file = await Windows.ApplicationModel.Package.Current.InstalledLocation.GetFileAsync("test.jpg");
photoStream = (await file.OpenReadAsync()).AsStreamForRead();
}
MemoryStream photoStreamMS = new MemoryStream();
// Copy stream to MemoryStream object so that it can be converted to byte array.
photoStream.CopyTo(photoStreamMS);
byte[] photoStreamBytes = photoStreamMS.ToArray();
string photoStreamBase64 = Convert.ToBase64String(photoStreamBytes);
string photoFileId = await UploadFileToOneDriveAsync(photoStreamMS.ToArray());
string attachments = "{'contentBytes':'" + photoStreamBase64 + "',"
+ "'@odata.type' : '#microsoft.graph.fileAttachment',"
+ "'contentType':'image/png',"
+ "'name':'me.png'}";
// Get the sharing link and insert it into the message body.
string sharingLinkUrl = await GetSharingLinkAsync(photoFileId);
string bodyContentWithSharingLink = String.Format(bodyContent, sharingLinkUrl);
// Prepare the recipient list
string[] splitter = { ";" };
var splitRecipientsString = recipients.Split(splitter, StringSplitOptions.RemoveEmptyEntries);
string recipientsJSON = null;
int n = 0;
foreach (string recipient in splitRecipientsString)
{
if (n == 0)
{
recipientsJSON += "{'EmailAddress':{'Address':'" + recipient.Trim() + "'}}";
}
else
{
recipientsJSON += ", {'EmailAddress':{'Address':'" + recipient.Trim() + "'}}";
}
n++;
}
try
{
HttpClient client = new HttpClient();
var token = await AuthenticationHelper.GetTokenForUserAsync();
client.DefaultRequestHeaders.Add("Authorization", "Bearer " + token);
// Build contents of post body and convert to StringContent object.
// Using line breaks for readability.
string postBody = "{'Message':{"
+ "'Body':{ "
+ "'Content': '" + bodyContentWithSharingLink + "',"
+ "'ContentType':'HTML'},"
+ "'Subject':'" + subject + "',"
+ "'ToRecipients':[" + recipientsJSON + "],"
+ "'Attachments':[" + attachments + "]},"
+ "'SaveToSentItems':true}";
var emailBody = new StringContent(postBody, System.Text.Encoding.UTF8, "application/json");
HttpResponseMessage response = await client.PostAsync(new Uri("https://graph.microsoft.com/v1.0/me/microsoft.graph.SendMail"), emailBody);
if (!response.IsSuccessStatusCode)
{
throw new Exception("We could not send the message: " + response.StatusCode.ToString());
}
}
catch (Exception e)
{
throw new Exception("We could not send the message: " + e.Message);
}
}