Attachment Konstruktor

Referensi

Definisi

Ruang nama:: System.Net.Mail

Rakitan:: System.Net.Mail.dll

Rakitan:: System.dll

Rakitan:: netstandard.dll

Penting

Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.

Menginisialisasi instans baru kelas Attachment.

Overload

Attachment(String)	Menginisialisasi instans Attachment baru kelas dengan string konten yang ditentukan.
Attachment(Stream, ContentType)	Menginisialisasi instans Attachment baru kelas dengan aliran dan jenis konten yang ditentukan.
Attachment(Stream, String)	Menginisialisasi instans Attachment baru kelas dengan aliran dan nama yang ditentukan.
Attachment(String, ContentType)	Menginisialisasi instans Attachment baru kelas dengan string konten yang ditentukan dan ContentType.
Attachment(String, String)	Menginisialisasi instans Attachment baru kelas dengan string konten yang ditentukan dan informasi jenis MIME.
Attachment(Stream, String, String)	Menginisialisasi instans Attachment baru kelas dengan informasi jenis aliran, nama, dan MIME yang ditentukan.

Attachment(String)

Sumber:: Attachment.cs

Sumber:: Attachment.cs

Sumber:: Attachment.cs

Menginisialisasi instans Attachment baru kelas dengan string konten yang ditentukan.

public:
 Attachment(System::String ^ fileName);

public Attachment (string fileName);

new System.Net.Mail.Attachment : string -> System.Net.Mail.Attachment

Public Sub New (fileName As String)

Parameter

fileName: String

String Yang berisi jalur file yang akan digunakan untuk membuat lampiran ini.

Pengecualian

ArgumentNullException

fileNameadalah null.

ArgumentException

fileName kosong.

Contoh

Contoh kode berikut menunjukkan cara memanggil konstruktor ini.

static void CreateMessageInlineAttachment2( String^ server, String^ textMessage )
{
   
   // Create a message and set up the recipients.
   MailMessage^ message = gcnew MailMessage( L"jane@contoso.com",L"ben@contoso.com",L"A text message for you.",L"Message: " );
   
   // Attach the message string to this email message.
   Attachment^ data = gcnew Attachment( textMessage );
   
   // Send textMessage as part of the email body.
   message->Attachments->Add( data );
   ContentType^ content = data->ContentType;
   content->MediaType = MediaTypeNames::Text::Plain;
   
   //Send the message.
   // Include credentials if the server requires them.
   SmtpClient^ client = gcnew SmtpClient( server );
   client->Credentials = CredentialCache::DefaultNetworkCredentials;
   client->Send( message );
   data->~Attachment();
   client->~SmtpClient();
}

public static void CreateMessageInlineAttachment2(string server, string
textMessage)
{
    // Create a message and set up the recipients.
    MailMessage message = new MailMessage(
       "jane@contoso.com",
       "ben@contoso.com",
       "A text message for you.",
       "Message: ");

    // Attach the message string to this email message.
    Attachment data = new Attachment(textMessage);
    // Send textMessage as part of the email body.
    message.Attachments.Add(data);
    ContentType content = data.ContentType;
    content.MediaType = MediaTypeNames.Text.Plain;
    //Send the message.
    // Include credentials if the server requires them.
    SmtpClient client = new SmtpClient(server);
    client.Credentials = CredentialCache.DefaultNetworkCredentials;

    try
    {
        client.Send(message);
    }
    catch (Exception ex)
    {
        Console.WriteLine("Exception caught in CreateMessageInlineAttachment2: {0}",
            ex.ToString());
    }
    data.Dispose();
}

Keterangan

Properti diatur sebagai berikut:

Properti	Nilai
MediaType	Plain.
TransferEncoding	QuotedPrintable.

Berlaku untuk

Attachment(Stream, ContentType)

Sumber:: Attachment.cs

Sumber:: Attachment.cs

Sumber:: Attachment.cs

Menginisialisasi instans Attachment baru kelas dengan aliran dan jenis konten yang ditentukan.

public:
 Attachment(System::IO::Stream ^ contentStream, System::Net::Mime::ContentType ^ contentType);

public Attachment (System.IO.Stream contentStream, System.Net.Mime.ContentType contentType);

new System.Net.Mail.Attachment : System.IO.Stream * System.Net.Mime.ContentType -> System.Net.Mail.Attachment

Public Sub New (contentStream As Stream, contentType As ContentType)

Parameter

contentStream: Stream

Dapat dibaca Stream yang berisi isi untuk lampiran ini.

contentType: ContentType

ContentType yang menjelaskan data di contentStream.

Pengecualian

ArgumentNullException

contentTypeadalah null.

-atau-

contentStreamadalah null.

Contoh

Contoh kode berikut menunjukkan cara memanggil konstruktor ini.

// The following example sends a summary of a log file as the message
// and the log as an email attachment.
static void SendErrorLog( String^ server, String^ recipientList )
{
   
   // Create a message from logMailer@contoso.com to recipientList.
   MailMessage^ message = gcnew MailMessage( L"logMailer@contoso.com",recipientList );
   message->Subject = L"Error Log report";
   String^ fileName = L"log.txt";
   
   // Get the file stream for the error log.
   // Requires the System.IO namespace.
   FileStream^ fs = gcnew FileStream( fileName,FileMode::Open,FileAccess::Read );
   StreamReader^ s = gcnew StreamReader( fs );
   int errors = 0;
   while ( s->ReadLine() != nullptr )
   {
      
      // Process each line from the log file here.
      errors++;
   }

   message->Body = String::Format( L"{0} errors in log as of {1}", errors, DateTime::Now );
   
   // Close the stream reader. This also closes the file.
   s->Close();
   
   // Re-open the file at the beginning to make the attachment.
   fs = gcnew FileStream( fileName,FileMode::Open,FileAccess::Read );
   
   // Make a contentType indicating that the log data
   // that is attached is plain text.
   ContentType^ ct = gcnew ContentType( MediaTypeNames::Text::Plain );
   
   // Attach the log file stream to the email message.
   Attachment^ data = gcnew Attachment( fs,ct );
   ContentDisposition^ disposition = data->ContentDisposition;
   
   // Suggest a file name for the attachment.
   disposition->FileName = String::Format( L"log{0}.txt", DateTime::Now );
   
   // Add the attachment to the message.
   message->Attachments->Add( data );
   
   // Send the message.
   // Include credentials if the server requires them.
   SmtpClient^ client = gcnew SmtpClient( server );
   client->Credentials = CredentialCache::DefaultNetworkCredentials;
   client->Send( message );
   data->~Attachment();
   client->~SmtpClient();
   
   // Close the log file.
   fs->Close();
}

// The following example sends a summary of a log file as the message
// and the log as an email attachment.
public static void SendErrorLog(string server, string recipientList)
{
    // Create a message from logMailer@contoso.com to recipientList.
    MailMessage message = new MailMessage(
       "logMailer@contoso.com", recipientList);

    message.Subject = "Error Log report";
    string fileName = "log.txt";
    // Get the file stream for the error log.
    // Requires the System.IO namespace.
    FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
    StreamReader s = new StreamReader(fs);
    int errors = 0;
    while (s.ReadLine() != null)
    {
        // Process each line from the log file here.
        errors++;
    }
    // The email message summarizes the data found in the log.
    message.Body = String.Format("{0} errors in log as of {1}",
        errors, DateTime.Now);
    // Close the stream reader. This also closes the file.
    s.Close();
    // Re-open the file at the beginning to make the attachment.
    fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
    // Make a contentType indicating that the log data
    // that is attached is plain text.
    ContentType ct = new ContentType(MediaTypeNames.Text.Plain);
    // Attach the log file stream to the email message.
    Attachment data = new Attachment(fs, ct);
    ContentDisposition disposition = data.ContentDisposition;
    // Suggest a file name for the attachment.
    disposition.FileName = "log" + DateTime.Now.ToString() + ".txt";
    // Add the attachment to the message.
    message.Attachments.Add(data);
    // Send the message.
    // Include credentials if the server requires them.
    SmtpClient client = new SmtpClient(server);
    client.Credentials = CredentialCache.DefaultNetworkCredentials;

    try
    {
        client.Send(message);
    }
    catch (Exception ex)
    {
        Console.WriteLine("Exception caught in SendErrorLog: {0}",
            ex.ToString());
    }
    data.Dispose();
    // Close the log file.
    fs.Close();
}

Keterangan

Properti TransferEncoding diatur ke Base64.

Jika properti stream CanSeek adalah false, lampiran dan MailMessage yang berisi tidak dapat digunakan kembali. Anda harus menyediakan aliran yang dapat dicari untuk menggunakan kembali lampiran.

Berlaku untuk

Attachment(Stream, String)

Sumber:: Attachment.cs

Sumber:: Attachment.cs

Sumber:: Attachment.cs

Menginisialisasi instans Attachment baru kelas dengan aliran dan nama yang ditentukan.

public:
 Attachment(System::IO::Stream ^ contentStream, System::String ^ name);

public Attachment (System.IO.Stream contentStream, string? name);

public Attachment (System.IO.Stream contentStream, string name);

new System.Net.Mail.Attachment : System.IO.Stream * string -> System.Net.Mail.Attachment

Public Sub New (contentStream As Stream, name As String)

Parameter

contentStream: Stream

Dapat dibaca Stream yang berisi isi untuk lampiran ini.

name: String

String yang berisi nilai untuk Name properti yang ContentType terkait dengan lampiran ini. Nilai ini bisa berupa null.

Pengecualian

ArgumentNullException

contentStreamadalah null.

Contoh

Contoh kode berikut menunjukkan cara memanggil konstruktor ini.

// The following example sends a summary of a log file as the message
// and the log as an email attachment.
static void SendNamedErrorLog( String^ server, String^ recipientList )
{
   
   // Create a message from logMailer@contoso.com to recipientList.
   MailMessage^ message = gcnew MailMessage( L"logMailer@contoso.com",recipientList );
   message->Subject = L"Error Log report";
   String^ fileName = L"log.txt";
   
   // Get the file stream for the error log.
   // Requires the System.IO namespace.
   FileStream^ fs = gcnew FileStream( fileName,FileMode::Open,FileAccess::Read );
   StreamReader^ s = gcnew StreamReader( fs );
   int errors = 0;
   while ( s->ReadLine() != nullptr )
   {
      
      // Process each line from the log file here.
      errors++;
   }

   message->Body = String::Format( L"{0} errors in log as of {1}", errors, DateTime::Now );
   
   // Close the stream reader. This also closes the file.
   s->Close();
   
   // Re-open the file at the beginning to make the attachment.
   fs = gcnew FileStream( fileName,FileMode::Open,FileAccess::Read );
   
   // Make a ContentType indicating that the log data
   // that is attached is plain text and is named.
   ContentType^ ct = gcnew ContentType;
   ct->MediaType = MediaTypeNames::Text::Plain;
   ct->Name = String::Format( L"log{0}.txt", DateTime::Now );
   
   // Create the attachment.
   Attachment^ data = gcnew Attachment( fs,ct );
   
   // Add the attachment to the message.
   message->Attachments->Add( data );
   
   // Send the message.
   // Include credentials if the server requires them.
   SmtpClient^ client = gcnew SmtpClient( server );
   client->Credentials = CredentialCache::DefaultNetworkCredentials;
   client->Send( message );
   data->~Attachment();
   client->~SmtpClient();
   
   // Close the log file.
   fs->Close();
   return;
}

// The following example sends a summary of a log file as the message
// and the log as an email attachment.
public static void SendNamedErrorLog(string server, string recipientList)
{
    // Create a message from logMailer@contoso.com to recipientList.
    MailMessage message = new MailMessage(
       "logMailer@contoso.com", recipientList);

    message.Subject = "Error Log report";
    string fileName = "log.txt";
    // Get the file stream for the error log.
    // Requires the System.IO namespace.
    FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
    StreamReader s = new StreamReader(fs);
    int errors = 0;
    while (s.ReadLine() != null)
    {
        // Process each line from the log file here.
        errors++;
    }
    // The email message summarizes the data found in the log.
    message.Body = String.Format("{0} errors in log as of {1}",
        errors, DateTime.Now);
    // Close the stream reader. This also closes the file.
    s.Close();
    // Re-open the file at the beginning to make the attachment.
    fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
    // Make a ContentType indicating that the log data
    // that is attached is plain text and is named.
    ContentType ct = new ContentType();
    ct.MediaType = MediaTypeNames.Text.Plain;
    ct.Name = "log" + DateTime.Now.ToString() + ".txt";
    // Create the attachment.
    Attachment data = new Attachment(fs, ct);
    // Add the attachment to the message.
    message.Attachments.Add(data);
    // Send the message.
    // Include credentials if the server requires them.
    SmtpClient client = new SmtpClient(server);
    client.Credentials = CredentialCache.DefaultNetworkCredentials;

    try
    {
        client.Send(message);
    }
    catch (Exception ex)
    {
        Console.WriteLine("Exception caught in SendNamedErrorLog: {0}",
            ex.ToString());
    }
    data.Dispose();
    // Close the log file.
    fs.Close();
    return;
}

Keterangan

Jika name tidak null atau sama dengan String.Empty (""), ContentType untuk lampiran ini dibangun dengan properti yang Name diatur ke name. Properti TransferEncoding diatur ke Base64.

Jika properti stream CanSeek adalah false, lampiran dan MailMessage yang berisi tidak dapat digunakan kembali. Anda harus menyediakan aliran yang dapat dicari untuk menggunakan kembali lampiran.

Berlaku untuk

Attachment(String, ContentType)

Sumber:: Attachment.cs

Sumber:: Attachment.cs

Sumber:: Attachment.cs

Menginisialisasi instans Attachment baru kelas dengan string konten yang ditentukan dan ContentType.

public:
 Attachment(System::String ^ fileName, System::Net::Mime::ContentType ^ contentType);

public Attachment (string fileName, System.Net.Mime.ContentType contentType);

new System.Net.Mail.Attachment : string * System.Net.Mime.ContentType -> System.Net.Mail.Attachment

Public Sub New (fileName As String, contentType As ContentType)

Parameter

fileName: String

String Yang berisi jalur file yang akan digunakan untuk membuat lampiran ini.

contentType: ContentType

ContentType yang menjelaskan data di fileName.

Pengecualian

ArgumentNullException

fileNameadalah null.

ArgumentException

mediaType tidak dalam format yang benar.

Berlaku untuk

Attachment(String, String)

Sumber:: Attachment.cs

Sumber:: Attachment.cs

Sumber:: Attachment.cs

Menginisialisasi instans Attachment baru kelas dengan string konten yang ditentukan dan informasi jenis MIME.

public:
 Attachment(System::String ^ fileName, System::String ^ mediaType);

public Attachment (string fileName, string? mediaType);

public Attachment (string fileName, string mediaType);

new System.Net.Mail.Attachment : string * string -> System.Net.Mail.Attachment

Public Sub New (fileName As String, mediaType As String)

Parameter

fileName: String

Yang String berisi isi untuk lampiran ini.

mediaType: String

String yang berisi informasi Mime Content-Header untuk lampiran ini. Nilai ini bisa berupa null.

Pengecualian

ArgumentNullException

fileNameadalah null.

FormatException

mediaType tidak dalam format yang benar.

Contoh

Contoh kode berikut menunjukkan cara memanggil konstruktor ini.

static void CreateMessageInlineAttachment( String^ server, String^ textMessage )
{
   
   // Create a message and set up the recipients.
   MailMessage^ message = gcnew MailMessage( L"jane@contoso.com",L"ben@contoso.com",L"An inline text message for you.",L"Message: " );
   
   // Attach the message string to this email message.
   Attachment^ data = gcnew Attachment( textMessage,MediaTypeNames::Text::Plain );
   
   // Send textMessage as part of the email body.
   message->Attachments->Add( data );
   ContentDisposition^ disposition = data->ContentDisposition;
   disposition->Inline = true;
   
   //Send the message.
   // Include credentials if the server requires them.
   SmtpClient^ client = gcnew SmtpClient( server );
   client->Credentials = CredentialCache::DefaultNetworkCredentials;
   client->Send( message );
   data->~Attachment();
   client->~SmtpClient();
}

public static void CreateMessageInlineAttachment(string server, string
textMessage)
{
    // Create a message and set up the recipients.
    MailMessage message = new MailMessage(
       "jane@contoso.com",
       "ben@contoso.com",
       "An inline text message for you.",
       "Message: ");

    // Attach the message string to this email message.
    Attachment data = new Attachment(textMessage, MediaTypeNames.Text.Plain);
    // Send textMessage as part of the email body.
    message.Attachments.Add(data);
    ContentDisposition disposition = data.ContentDisposition;
    disposition.Inline = true;
    //Send the message.
    // Include credentials if the server requires them.
    SmtpClient client = new SmtpClient(server);
    client.Credentials = CredentialCache.DefaultNetworkCredentials;

    try
    {
        client.Send(message);
    }
    catch (Exception ex)
    {
        Console.WriteLine("Exception caught in CreateMessageInlineAttachment: {0}",
            ex.ToString());
    }
    data.Dispose();
}

Keterangan

Jika mediaType atau sama dengan String.Empty (""), MediaType properti untuk lampiran ini diatur ke Plain.null Jika mediaType tidak null dan bukan string panjang nol, string tersebut digunakan untuk membangun yang ContentType terkait dengan lampiran ini.

Berlaku untuk

Attachment(Stream, String, String)

Sumber:: Attachment.cs

Sumber:: Attachment.cs

Sumber:: Attachment.cs

Menginisialisasi instans Attachment baru kelas dengan informasi jenis aliran, nama, dan MIME yang ditentukan.

public:
 Attachment(System::IO::Stream ^ contentStream, System::String ^ name, System::String ^ mediaType);

public Attachment (System.IO.Stream contentStream, string? name, string? mediaType);

public Attachment (System.IO.Stream contentStream, string name, string mediaType);

new System.Net.Mail.Attachment : System.IO.Stream * string * string -> System.Net.Mail.Attachment

Public Sub New (contentStream As Stream, name As String, mediaType As String)

Parameter

contentStream: Stream

Dapat dibaca Stream yang berisi isi untuk lampiran ini.

name: String

String yang berisi nilai untuk Name properti yang ContentType terkait dengan lampiran ini. Nilai ini bisa berupa null.

mediaType: String

String yang berisi informasi Mime Content-Header untuk lampiran ini. Nilai ini bisa berupa null.

Pengecualian

ArgumentNullException

streamadalah null.

FormatException

mediaType tidak dalam format yang benar.

Contoh

Contoh kode berikut menunjukkan cara memanggil konstruktor ini.

// The following example sends a summary of a log file as the message
// and the log as an email attachment.
static void SendNamedAndTypedErrorLog( String^ server, String^ recipientList )
{
   
   // Create a message from logMailer@contoso.com to recipientList.
   MailMessage^ message = gcnew MailMessage( L"logMailer@contoso.com",recipientList );
   message->Subject = L"Error Log report";
   String^ fileName = L"log.txt";
   
   // Get the file stream for the error log.
   // Requires the System.IO namespace.
   FileStream^ fs = gcnew FileStream( fileName,FileMode::Open,FileAccess::Read );
   StreamReader^ s = gcnew StreamReader( fs );
   int errors = 0;
   while ( s->ReadLine() != nullptr )
   {
      
      // Process each line from the log file here.
      errors++;
   }

   message->Body = String::Format( L"{0} errors in log as of {1}", errors, DateTime::Now );
   
   // Close the stream reader. This also closes the file.
   s->Close();
   
   // Re-open the file at the beginning to make the attachment.
   fs = gcnew FileStream( fileName,FileMode::Open,FileAccess::Read );
   
   // Create a name for the log data file.
   String^ name = String::Format( L"log{0}.txt", DateTime::Now );
   
   // Create the attachment, name it, and specify the MIME type.
   Attachment^ data = gcnew Attachment( fs,name,MediaTypeNames::Text::Plain );
   
   // Add the attachment to the message.
   message->Attachments->Add( data );
   
   // Send the message.
   // Include credentials if the server requires them.
   SmtpClient^ client = gcnew SmtpClient( server );
   client->Credentials = CredentialCache::DefaultNetworkCredentials;
   client->Send( message );
   data->~Attachment();
   client->~SmtpClient();
   
   // Close the log file.
   fs->Close();
}

// The following example sends a summary of a log file as the message
// and the log as an email attachment.
public static void SendNamedAndTypedErrorLog(string server, string recipientList)
{
    // Create a message from logMailer@contoso.com to recipientList.
    MailMessage message = new MailMessage(
       "logMailer@contoso.com", recipientList);

    message.Subject = "Error Log report";
    string fileName = "log.txt";
    // Get the file stream for the error log.
    // Requires the System.IO namespace.
    FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
    StreamReader s = new StreamReader(fs);
    int errors = 0;
    while (s.ReadLine() != null)
    {
        // Process each line from the log file here.
        errors++;
    }
    // The email message summarizes the data found in the log.
    message.Body = String.Format("{0} errors in log as of {1}",
        errors, DateTime.Now);
    // Close the stream reader. This also closes the file.
    s.Close();
    // Re-open the file at the beginning to make the attachment.
    fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
    // Create a name for the log data file.
    string name = "log" + DateTime.Now.ToString() + ".txt";
    // Create the attachment, name it, and specify the MIME type.
    Attachment data = new Attachment(fs, name, MediaTypeNames.Text.Plain);
    // Add the attachment to the message.
    message.Attachments.Add(data);
    // Send the message.
    // Include credentials if the server requires them.
    SmtpClient client = new SmtpClient(server);
    client.Credentials = CredentialCache.DefaultNetworkCredentials;

    try
    {
        client.Send(message);
    }
    catch (Exception ex)
    {
        Console.WriteLine("Exception caught in SendNamedAndTypedErrorLog: {0}",
            ex.ToString());
    }
    data.Dispose();
    // Close the log file.
    fs.Close();
}

Keterangan

Jika mediaType tidak null atau sama dengan String.Empty (""), itu digunakan untuk membangun kelas yang ContentType terkait dengan lampiran ini.

Jika mediaType dan name keduanya berisi Name informasi, nilai yang ditentukan di name digunakan. Properti TransferEncoding diatur ke Base64.

Jika properti stream CanSeek adalah false, lampiran dan MailMessage yang berisi tidak dapat digunakan kembali. Anda harus menyediakan aliran yang dapat dicari untuk menggunakan kembali lampiran.

Berlaku untuk

Bagikan melalui

Attachment Konstruktor

Definisi

Overload

Attachment(String)

Parameter

Pengecualian

Contoh

Keterangan

Berlaku untuk

Attachment(Stream, ContentType)

Parameter

Pengecualian

Contoh

Keterangan

Berlaku untuk

Attachment(Stream, String)

Parameter

Pengecualian

Contoh

Keterangan

Berlaku untuk

Attachment(String, ContentType)

Parameter

Pengecualian

Berlaku untuk

Attachment(String, String)

Parameter

Pengecualian

Contoh

Keterangan

Berlaku untuk

Attachment(Stream, String, String)

Parameter

Pengecualian

Contoh

Keterangan

Berlaku untuk

Saran dan Komentar

Sumber Daya Tambahan: