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适用于 .NET 的 Azure 通信Email客户端库 - 版本 1.0.1

项目
08/23/2023

此包包含用于 Email Azure 通信服务的 C# SDK。

入门

安装包

使用 NuGet 安装适用于 .NET 的 Azure 通信Email客户端库：

dotnet add package Azure.Communication.Email

先决条件

需要 Azure 订阅、通信服务资源和具有活动域的Email通信资源。

若要创建这些资源，可以使用 Azure 门户、Azure PowerShell或 .NET 管理客户端库。

关键概念

EmailClient 提供发送电子邮件的功能。

使用语句

using Azure.Communication.Email;

验证客户端

Email客户端可以使用从 Azure 门户中的 Azure 通信资源获取的连接字符串进行身份验证。

var connectionString = "<connection_string>"; // Find your Communication Services resource in the Azure portal
EmailClient emailClient = new EmailClient(connectionString);

或者，也可以使用有效的令牌凭据对Email客户端进行身份验证。在此选项中，AZURE_CLIENT_SECRET、AZURE_CLIENT_ID 和 AZURE_TENANT_ID 环境变量需要设置为可执行身份验证。

string endpoint = "<endpoint_url>";
TokenCredential tokenCredential = new DefaultAzureCredential();
tokenCredential = new DefaultAzureCredential();
EmailClient emailClient = new EmailClient(new Uri(endpoint), tokenCredential);

示例

发送带有状态自动轮询的简单电子邮件

若要发送电子邮件，请从调用或 SendSendAsync 函数的 EmailClient简单重载。

try
{
    var emailSendOperation = emailClient.Send(
        wait: WaitUntil.Completed,
        senderAddress: "<Send email address>" // The email address of the domain registered with the Communication Services resource
        recipientAddress: "<recipient email address>"
        subject: "This is the subject",
        htmlContent: "<html><body>This is the html body</body></html>");
    Console.WriteLine($"Email Sent. Status = {emailSendOperation.Value.Status}");

    /// Get the OperationId so that it can be used for tracking the message for troubleshooting
    string operationId = emailSendOperation.Id;
    Console.WriteLine($"Email operation id = {operationId}");
}
catch ( RequestFailedException ex )
{
    /// OperationID is contained in the exception message and can be used for troubleshooting purposes
    Console.WriteLine($"Email send operation failed with error code: {ex.ErrorCode}, message: {ex.Message}");
}

使用手动轮询状态发送简单电子邮件

若要发送电子邮件，请从调用或 SendSendAsync 函数的 EmailClient简单重载。

/// Send the email message with WaitUntil.Started
var emailSendOperation = await emailClient.SendAsync(
    wait: WaitUntil.Started,
    senderAddress: "<Send email address>" // The email address of the domain registered with the Communication Services resource
    recipientAddress: "<recipient email address>"
    subject: "This is the subject",
    htmlContent: "<html><body>This is the html body</body></html>");

/// Call UpdateStatus on the email send operation to poll for the status
/// manually.
try
{
    while (true)
    {
        await emailSendOperation.UpdateStatusAsync();
        if (emailSendOperation.HasCompleted)
        {
            break;
        }
        await Task.Delay(100);
    }

    if (emailSendOperation.HasValue)
    {
        Console.WriteLine($"Email queued for delivery. Status = {emailSendOperation.Value.Status}");
    }
}
catch (RequestFailedException ex)
{
    Console.WriteLine($"Email send failed with Code = {ex.ErrorCode} and Message = {ex.Message}");
}

/// Get the OperationId so that it can be used for tracking the message for troubleshooting
string operationId = emailSendOperation.Id;
Console.WriteLine($"Email operation id = {operationId}");

发送包含更多选项的电子邮件

若要发送电子邮件，请从EmailClient采用 EmailMessage 参数的 SendSendAsync 调用或函数的重载。

// Create the email content
var emailContent = new EmailContent("This is the subject")
{
    PlainText = "This is the body",
    Html = "<html><body>This is the html body</body></html>"
};

// Create the EmailMessage
var emailMessage = new EmailMessage(
    senderAddress: "<Send email address>" // The email address of the domain registered with the Communication Services resource
    recipientAddress: "<recipient email address>"
    content: emailContent);

try
{
    var emailSendOperation = emailClient.Send(
        wait: WaitUntil.Completed,
        message: emailMessage);
    Console.WriteLine($"Email Sent. Status = {emailSendOperation.Value.Status}");

    /// Get the OperationId so that it can be used for tracking the message for troubleshooting
    string operationId = emailSendOperation.Id;
    Console.WriteLine($"Email operation id = {operationId}");
}
catch ( RequestFailedException ex )
{
    /// OperationID is contained in the exception message and can be used for troubleshooting purposes
    Console.WriteLine($"Email send operation failed with error code: {ex.ErrorCode}, message: {ex.Message}");
}

向多个收件人发送电子邮件

若要向多个收件人发送电子邮件，请将每种食谱类型的对象添加到 EmailAddress 对象 EmailRecipient 。

// Create the email content
var emailContent = new EmailContent("This is the subject")
{
    PlainText = "This is the body",
    Html = "<html><body>This is the html body</body></html>"
};

// Create the To list
var toRecipients = new List<EmailAddress>
{
    new EmailAddress(
        address: "<recipient email address>"
        displayName: "<recipient displayname>"
    new EmailAddress(
        address: "<recipient email address>"
        displayName: "<recipient displayname>"
};

// Create the CC list
var ccRecipients = new List<EmailAddress>
{
    new EmailAddress(
        address: "<recipient email address>"
        displayName: "<recipient displayname>"
    new EmailAddress(
        address: "<recipient email address>"
        displayName: "<recipient displayname>"
};

// Create the BCC list
var bccRecipients = new List<EmailAddress>
{
    new EmailAddress(
        address: "<recipient email address>"
        displayName: "<recipient displayname>"
    new EmailAddress(
        address: "<recipient email address>"
        displayName: "<recipient displayname>"
};

var emailRecipients = new EmailRecipients(toRecipients, ccRecipients, bccRecipients);

// Create the EmailMessage
var emailMessage = new EmailMessage(
    senderAddress: "<Send email address>" // The email address of the domain registered with the Communication Services resource
    emailRecipients,
    emailContent);

try
{
    EmailSendOperation emailSendOperation = emailClient.Send(WaitUntil.Completed, emailMessage);
    Console.WriteLine($"Email Sent. Status = {emailSendOperation.Value.Status}");

    /// Get the OperationId so that it can be used for tracking the message for troubleshooting
    string operationId = emailSendOperation.Id;
    Console.WriteLine($"Email operation id = {operationId}");
}
catch ( RequestFailedException ex )
{
    /// OperationID is contained in the exception message and can be used for troubleshooting purposes
    Console.WriteLine($"Email send operation failed with error code: {ex.ErrorCode}, message: {ex.Message}");
}

发送带有附件的电子邮件

Azure 通信服务支持发送包含附件的电子邮件。

// Create the EmailMessage
var emailMessage = new EmailMessage(
    senderAddress: "<Send email address>" // The email address of the domain registered with the Communication Services resource
    recipientAddress: "<recipient email address>"
    content: emailContent);

var filePath = "<path to your file>";
var attachmentName = "<name of your attachment>";
var contentType = MediaTypeNames.Text.Plain;

var content = new BinaryData(System.IO.File.ReadAllBytes(filePath));
var emailAttachment = new EmailAttachment(attachmentName, contentType, content);

emailMessage.Attachments.Add(emailAttachment);

try
{
    EmailSendOperation emailSendOperation = emailClient.Send(WaitUntil.Completed, emailMessage);
    Console.WriteLine($"Email Sent. Status = {emailSendOperation.Value.Status}");

    /// Get the OperationId so that it can be used for tracking the message for troubleshooting
    string operationId = emailSendOperation.Id;
    Console.WriteLine($"Email operation id = {operationId}");
}
catch ( RequestFailedException ex )
{
    /// OperationID is contained in the exception message and can be used for troubleshooting purposes
    Console.WriteLine($"Email send operation failed with error code: {ex.ErrorCode}, message: {ex.Message}");
}

疑难解答

对于 RequestFailedException 任何不成功的请求，会作为服务响应引发。异常包含有关从服务返回的响应代码的信息。

后续步骤

详细了解 Azure 通信服务中的Email

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