/// <summary>
/// Retrieves the picture of a contact, if any
/// </summary>
/// <param name="contactId">The ID of the contact</param>
/// <returns>The picture as a binary Stream</returns>
public static Stream GetContactPhoto(String contactId)
{
Stream result = null;
String contentType = "image/png";
try
{
result = MicrosoftGraphHelper.MakeGetRequestForStream(
String.Format("{0}me/contacts/{1}/photo/$value",
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri, contactId),
contentType);
}
catch (ApplicationException ex)
{
HttpException httpException = ex.InnerException as HttpException;
if (httpException != null && httpException.GetHttpCode() == 404)
{
// If 404 -> The contact does not have a picture
// Keep NULL value for result
result = null;
}
}
return(result);
}
/// <summary>
/// This method retrieves the photo of a group from Azure AD
/// </summary>
/// <param name="groupId">The ID of the group</param>
/// <returns>The group's photo retrieved from Azure AD</returns>
public static Stream GetGroupPhoto(String groupId)
{
String contentType = "image/png";
var result = MicrosoftGraphHelper.MakeGetRequestForStream(
String.Format("{0}groups/{1}/photo/$value",
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri, groupId),
contentType);
return(result);
}
/// <summary>
/// This method returns the content of a specific file by ID
/// </summary>
/// <param name="driveId">The ID of the target drive</param>
/// <param name="fileId">The ID of the target file</param>
/// <returns>The content of the file as a Stream</returns>
public static Stream GetFileContent(String driveId, String fileId, String contentType)
{
Stream fileContent = MicrosoftGraphHelper.MakeGetRequestForStream(
String.Format("{0}drives/{1}/items/{2}/content",
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
driveId,
fileId),
contentType);
return(fileContent);
}
/// <summary>
/// This method returns the thumbnails of a specific file by ID
/// </summary>
/// <param name="driveId">The ID of the target drive</param>
/// <param name="fileId">The ID of the target file</param>
/// <returns>The file thumbnails for the specific file</returns>
public static Stream GetFileThumbnailImage(String driveId, String fileId, ThumbnailSize size)
{
String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
String.Format("{0}drives/{1}/items/{2}/thumbnails/0/{3}",
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
driveId,
fileId,
size.ToString().ToLower()));
var thumbnail = JsonConvert.DeserializeObject <Thumbnail>(jsonResponse);
var thumbnailImageStream = MicrosoftGraphHelper.MakeGetRequestForStream(
thumbnail.Url,
"image/jpeg");
return(thumbnailImageStream);
}
