MS Graph .NET（對於開發者的運行原理）

// Required namespaces
using Azure.Identity;
using Microsoft.Graph;

// Defining necessary credentials and scope
var clientId = "Your_Application_Id";
var tenantId = "Your_Tenant_Id";
var clientSecret = "Your_Client_Secret";
var scopes = new[] { "User.Read" };

// Configuring TokenCredentialOptions for Azure Public Cloud
var options = new TokenCredentialOptions
{
    AuthorityHost = AzureAuthorityHosts.AzurePublicCloud
};

// Authenticating using client credentials
var clientSecretCredential = new ClientSecretCredential(
    tenantId, clientId, clientSecret, options);

// Creating a new instance of GraphServiceClient
var graphClient = new GraphServiceClient(clientSecretCredential, scopes);

// Fetching current user's profile information
var user = await graphClient.Me
    .Request()
    .GetAsync();

// Printing user's display name
Console.WriteLine($"Hello, {user.DisplayName}!");

' Required namespaces
Imports Azure.Identity
Imports Microsoft.Graph

' Defining necessary credentials and scope
Private clientId = "Your_Application_Id"
Private tenantId = "Your_Tenant_Id"
Private clientSecret = "Your_Client_Secret"
Private scopes = { "User.Read" }

' Configuring TokenCredentialOptions for Azure Public Cloud
Private options = New TokenCredentialOptions With {.AuthorityHost = AzureAuthorityHosts.AzurePublicCloud}

' Authenticating using client credentials
Private clientSecretCredential = New ClientSecretCredential(tenantId, clientId, clientSecret, options)

' Creating a new instance of GraphServiceClient
Private graphClient = New GraphServiceClient(clientSecretCredential, scopes)

' Fetching current user's profile information
Private user = await graphClient.Me.Request().GetAsync()

' Printing user's display name
Console.WriteLine($"Hello, {user.DisplayName}!")

// Retrieving the top 10 messages from the user's mailbox
var messages = await graphClient.Me.Messages
    .Request()
    .Top(10)
    .GetAsync();

// Iterating through the messages and printing their subjects
foreach (var message in messages)
{
    Console.WriteLine($"Subject: {message.Subject}");
}

' Retrieving the top 10 messages from the user's mailbox
Dim messages = Await graphClient.Me.Messages.Request().Top(10).GetAsync()

' Iterating through the messages and printing their subjects
For Each message In messages
	Console.WriteLine($"Subject: {message.Subject}")
Next message

// Creating a message to be sent
var message = new Message
{
    Subject = "Hello from MS Graph .NET",
    Body = new ItemBody
    {
        ContentType = BodyType.Text,
        Content = "Hello, this is a test email."
    },
    ToRecipients = new List<Recipient>()
    {
        new Recipient
        {
            EmailAddress = new EmailAddress
            {
                Address = "recipient@example.com"
            }
        }
    }
};

// Sending the email
await graphClient.Me.SendMail(message, null)
    .Request()
    .PostAsync();

' Creating a message to be sent
Dim message As New Message With {
	.Subject = "Hello from MS Graph .NET",
	.Body = New ItemBody With {
		.ContentType = BodyType.Text,
		.Content = "Hello, this is a test email."
	},
	.ToRecipients = New List(Of Recipient)() From {
		New Recipient With {
			.EmailAddress = New EmailAddress With {.Address = "recipient@example.com"}
		}
	}
}

' Sending the email
Await graphClient.Me.SendMail(message, Nothing).Request().PostAsync()

// Creating a calendar event
var @event = new Event
{
    Subject = "Team Meeting",
    Body = new ItemBody
    {
        ContentType = BodyType.Html,
        Content = "Discuss project updates."
    },
    Start = new DateTimeTimeZone
    {
        DateTime = "2024-04-15T12:00:00",
        TimeZone = "Pacific Standard Time"
    },
    End = new DateTimeTimeZone
    {
        DateTime = "2024-04-15T14:00:00",
        TimeZone = "Pacific Standard Time"
    },
    Location = new Location
    {
        DisplayName = "Conference Room 1"
    }
};

// Adding the event to the user's calendar
await graphClient.Me.Events
    .Request()
    .AddAsync(@event);

' Creating a calendar event
Dim [event] As [Event] = New [Event] With {
	.Subject = "Team Meeting",
	.Body = New ItemBody With {
		.ContentType = BodyType.Html,
		.Content = "Discuss project updates."
	},
	.Start = New DateTimeTimeZone With {
		.DateTime = "2024-04-15T12:00:00",
		.TimeZone = "Pacific Standard Time"
	},
	.End = New DateTimeTimeZone With {
		.DateTime = "2024-04-15T14:00:00",
		.TimeZone = "Pacific Standard Time"
	},
	.Location = New Location With {.DisplayName = "Conference Room 1"}
}

' Adding the event to the user's calendar
Await graphClient.Me.Events.Request().AddAsync([event])

// Retrieving files from the root OneDrive folder
var files = await graphClient.Me.Drive.Root.Children
    .Request()
    .GetAsync();

// Printing each file's name
foreach (var file in files)
{
    Console.WriteLine(file.Name);
}

' Retrieving files from the root OneDrive folder
Dim files = Await graphClient.Me.Drive.Root.Children.Request().GetAsync()

' Printing each file's name
For Each file In files
	Console.WriteLine(file.Name)
Next file

// Retrieving teams that the user is part of
var teams = await graphClient.Me.JoinedTeams
    .Request()
    .GetAsync();

// Printing each team's display name
foreach (var team in teams)
{
    Console.WriteLine($"Team name: {team.DisplayName}");
}

' Retrieving teams that the user is part of
Dim teams = Await graphClient.Me.JoinedTeams.Request().GetAsync()

' Printing each team's display name
For Each team In teams
	Console.WriteLine($"Team name: {team.DisplayName}")
Next team

// Simplified example, ensure to handle exceptions and errors appropriately.
using Microsoft.Graph;
using IronPdf;
using System.IO;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        // Setting up the GraphServiceClient with a DelegateAuthenticationProvider
        var graphClient = new GraphServiceClient(
            new DelegateAuthenticationProvider(
                async (requestMessage) =>
                {
                    // Insert code to acquire token
                    string accessToken = await GetAccessTokenAsync();
                    requestMessage.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", accessToken);
                }));

        // Replace 'itemId' with the ID of your document in OneDrive
        var stream = await graphClient.Me.Drive.Items["itemId"].Content.Request().GetAsync();

        // IronPDF setup to convert the fetched file to PDF
        var renderer = new HtmlToPdf();
        var pdfDocument = renderer.RenderHtmlAsPdf(StreamToString(stream));

        // Save the PDF to a file
        pdfDocument.SaveAs("YourDocument.pdf");
    }

    // Method to convert a Stream to a String
    static string StreamToString(Stream stream)
    {
        using (var reader = new StreamReader(stream))
        {
            return reader.ReadToEnd();
        }
    }

    // Method to obtain the access token
    static async Task<string> GetAccessTokenAsync()
    {
        // Implement your authentication logic here to return the access token
        return "your_access_token";
    }
}

' Simplified example, ensure to handle exceptions and errors appropriately.
Imports Microsoft.Graph
Imports IronPdf
Imports System.IO
Imports System.Threading.Tasks

Friend Class Program
	Shared Async Function Main(ByVal args() As String) As Task
		' Setting up the GraphServiceClient with a DelegateAuthenticationProvider
		Dim graphClient = New GraphServiceClient(New DelegateAuthenticationProvider(Async Sub(requestMessage)
					' Insert code to acquire token
					Dim accessToken As String = Await GetAccessTokenAsync()
					requestMessage.Headers.Authorization = New System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", accessToken)
		End Sub))

		' Replace 'itemId' with the ID of your document in OneDrive
		Dim stream = Await graphClient.Me.Drive.Items("itemId").Content.Request().GetAsync()

		' IronPDF setup to convert the fetched file to PDF
		Dim renderer = New HtmlToPdf()
		Dim pdfDocument = renderer.RenderHtmlAsPdf(StreamToString(stream))

		' Save the PDF to a file
		pdfDocument.SaveAs("YourDocument.pdf")
	End Function

	' Method to convert a Stream to a String
	Private Shared Function StreamToString(ByVal stream As Stream) As String
		Using reader = New StreamReader(stream)
			Return reader.ReadToEnd()
		End Using
	End Function

	' Method to obtain the access token
	Private Shared Async Function GetAccessTokenAsync() As Task(Of String)
		' Implement your authentication logic here to return the access token
		Return "your_access_token"
	End Function
End Class