var config = new BoxConfig(<Client_Id>, <Client_Secret>, new Uri("http://localhost"));
var session = new OAuthSession(<Developer_Token>, "NOT_NEEDED", 3600, "bearer");
client = new BoxClient(config, session);

var boxConfig = new BoxConfig(<Client_Id>, <Client_Secret>, <Enterprise_Id>, <Private_Key>, <JWT_Private_Key_Password>, <JWT_Public_Key_Id>);
var boxJWT = new BoxJWTAuth(boxConfig);

var adminToken = boxJWT.AdminToken(); //valid for 60 minutes so should be cached and re-used
var adminClient = boxJWT.AdminClient(adminToken);

//NOTE: you must set IsPlatformAccessOnly=true for an App User
var userRequest = new BoxUserRequest() { Name = "test appuser", IsPlatformAccessOnly = true };
var appUser = await adminClient.UsersManager.CreateEnterpriseUserAsync(userRequest);

//get a user client
var userToken = boxJWT.UserToken(appUser.Id); //valid for 60 minutes so should be cached and re-used
var userClient = boxJWT.UserClient(userToken, appUser.Id);

//for example, look up the app user's details
var userDetails = await userClient.UsersManager.GetCurrentUserInformationAsync();

var config = new BoxConfig(<Client_Id>, <Client_Secret>, <Redirect_Uri>);
var client = new BoxClient(config);

string authCode = await OAuth2Sample.GetAuthCode(config.AuthCodeUri, new Uri(config.RedirectUri));
await client.Auth.AuthenticateAsync(authCode);

// Ensure the OAuth2Sample control is placed at the root level of the application page xaml and named "oAuth2Sample"
// Subscribe to the received call back 
oAuth2Sample.AuthCodeReceived += async (s, e) =>
{
    var auth = s as OAuth2Sample;
    await client.Auth.AuthenticateAsync(auth.AuthCode);
};
// Navigate and show the login page
oauth.GetAuthCode(config.AuthCodeUri, config.RedirectUri);

OAuthSession session = // Create session from custom implementation
var client = new BoxClient(config, session);

// Get root folder with default properties
var items = await client.FoldersManager.GetFolderItemsAsync("0", 500);

BoxFile f = await client.FilesManager.GetInformationAsync(fileId);

// Create request object with new property values
BoxFileRequest request = new BoxFileRequest()
{
    Id = fileId,
    Name = "NewName",
    Description = "New Description"
};
BoxFile f = await client.FilesManager.UpdateInformationAsync(request );

BoxFile newFile;

// Create request object with name and parent folder the file should be uploaded to
using (FileStream stream = new FileStream(@"C:\\example.pdf", FileMode.Open))
{
	BoxFileRequest req = new BoxFileRequest()
	{
		Name = "example.pdf",
		Parent = new BoxRequestEntity() { Id = "0" }
	};
	newFile = await client.FilesManager.UploadAsync(req, stream);
}

BoxFile newFile;

// Create request object with name and parent folder the file should be uploaded to
using (FileStream stream = new FileStream(@"C:\\example.pdf", FileMode.Open))
using (SHA1 sha1 = SHA1.Create())
{
	BoxFileRequest req = new BoxFileRequest()
	{
		Name = "example.pdf",
		Parent = new BoxRequestEntity() { Id = "0" }
	};
	
	byte[] md5Bytes = sha1.ComputeHash(fs);
	
	newFile = await client.FilesManager.UploadAsync(req, stream, contentMD5: md5Bytes);
}

try
{
	var req = new BoxPreflightCheckRequest() { Name = "example.pdf", 
											   Parent = new BoxRequestEntity() { Id = "0" },
											   Size = 10000 //set the size if known, otherwise don't set (i.e. for a stream)
											 };
											 
	//exception will be thrown if name collision or storage limit would be exceeded by upload									 
	await userClient.FilesManager.PreflightCheck(req);
}
catch (BoxPreflightCheckConflictException<BoxFile> bex)
{
	//Handle file name collision error	
}
catch (BoxException bex)
{
	//Handle storage limit error 
}

try
{
	var req = new BoxPreflightCheckRequest() { Size=10926 };
	
	//exception will be thrown if storage limit would be exceeded by uploading new version of file
    await userClient.FilesManager.PreflightCheckNewVersion(existingFile.Id, req);									 
}
catch (BoxException bex)
{
	//Handle storage limit error
}

Stream stream = await client.FilesManager.DownloadStreamAsync(fileId);

var downloadUri = await client.FilesManager.GetDownloadUriAsync(fileId);

var filter = new 
{ 
	someKey = "blah", 
	expiresOn = new {gt = new DateTime(2015,1,1), lt = new DateTime(2015, 9, 1)}
};

var mdFilter = new BoxMetadataFilterRequest() 
{ 
	TemplateKey = "yourTemplate", 
	Scope = "enterprise", 
	Filters = filter 
};

//currently only one BoxMetadataFilterRequest element is supported; in the future multiple will be supported (hence the List)
var results = await client.SearchManager.SearchAsync(mdFilters: new List<BoxMetadataFilterRequest>() { mdFilter });

var config = new BoxConfig(<Client_Id>, <Client_Secret>, <Redirect_Uri);
var auth = new OAuthSession(<Your_Access_Token>, <Your_Refresh_Token>, 3600, "bearer");

var userId = "12345678"
var userClient = new BoxClient(config, auth, asUser: userId);

//returns root folder items for the user with ID '12345678'
var items  = await userClient.FoldersManager.GetFolderItemsAsync("0", 500);

var config = new BoxConfig(<Client_Id>, <Client_Secret>, <Redirect_Uri);
var auth = new OAuthSession(<Your_Access_Token>, <Your_Refresh_Token>, 3600, "bearer");

var adminClient = new BoxClient(config, auth, suppressNotifications: true);