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Attachment Constructores

  • Referencia

Definición

Espacio de nombres:
System.Net.Mail
Ensamblado:
System.Net.Mail.dll
Ensamblado:
System.dll
Ensamblado:
netstandard.dll

Inicializa una nueva instancia de la clase Attachment.

Sobrecargas

Attachment(String)

Inicializa una nueva instancia de la clase Attachment con la cadena de contenido especificada.
Attachment(Stream, ContentType)

Inicializa una nueva instancia de la clase Attachment con la cadena y el tipo de contenido especificados.
Attachment(Stream, String)

Inicializa una nueva instancia de la clase Attachment con la secuencia y el nombre especificados.
Attachment(String, ContentType)

Inicializa una nueva instancia de la clase Attachment con la cadena de contenido y el objeto ContentType que se hayan especificado.
Attachment(String, String)

Inicializa una nueva instancia de la clase Attachment con la cadena de contenido y la información de tipo MIME que se hayan especificado.
Attachment(Stream, String, String)

Inicializa una nueva instancia de la clase Attachment con la cadena, el nombre y la información de tipo MIME que se hayan especificado.

Attachment(String)

Source:
Attachment.cs
Source:
Attachment.cs
Source:
Attachment.cs

Inicializa una nueva instancia de la clase Attachment con la cadena de contenido especificada.

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)

Parámetros

fileName
String

Objeto String que contiene una ruta de acceso al archivo que se va a utilizar para crear estos datos adjuntos.

Excepciones

ArgumentNullException

fileName es null.

ArgumentException

fileName está vacía.

Ejemplos

En el ejemplo de código siguiente se muestra cómo llamar a este constructor.

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();
}

Comentarios

Las propiedades se establecen de la siguiente manera:

Propiedad. Valor
MediaType Plain.
TransferEncoding QuotedPrintable.

Se aplica a

Attachment(Stream, ContentType)

Source:
Attachment.cs
Source:
Attachment.cs
Source:
Attachment.cs

Inicializa una nueva instancia de la clase Attachment con la cadena y el tipo de contenido especificados.

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)

Parámetros

contentStream
Stream

Objeto Stream legible que incluye el contenido de estos datos adjuntos.

contentType
ContentType

Objeto ContentType que describe los datos de contentStream.

Excepciones

ArgumentNullException

contentType es null.

O bien

contentStream es null.

Ejemplos

En el ejemplo de código siguiente se muestra cómo llamar a este constructor.

// 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();
}

Comentarios

La propiedad TransferEncoding está establecida en Base64.

Si la propiedad de CanSeek la secuencia es false, los datos adjuntos y el MailMessage que lo contiene no son reutilizables. Debe proporcionar una secuencia que se pueda buscar para reutilizar los datos adjuntos.

Se aplica a

Attachment(Stream, String)

Source:
Attachment.cs
Source:
Attachment.cs
Source:
Attachment.cs

Inicializa una nueva instancia de la clase Attachment con la secuencia y el nombre especificados.

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)

Parámetros

contentStream
Stream

Objeto Stream legible que incluye el contenido de estos datos adjuntos.

name
String

Objeto String que contiene el valor de la propiedad Name del objeto ContentType asociado a estos datos adjuntos. Este valor puede ser null.

Excepciones

ArgumentNullException

contentStream es null.

Ejemplos

En el ejemplo de código siguiente se muestra cómo llamar a este constructor.

// 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;
}

Comentarios

Si name no null es o igual a String.Empty (""), el ContentType objeto de estos datos adjuntos se construye con la Name propiedad establecida nameen . La propiedad TransferEncoding está establecida en Base64.

Si la propiedad de CanSeek la secuencia es false, los datos adjuntos y el MailMessage que lo contiene no son reutilizables. Debe proporcionar una secuencia que se pueda buscar para reutilizar los datos adjuntos.

Se aplica a

Attachment(String, ContentType)

Source:
Attachment.cs
Source:
Attachment.cs
Source:
Attachment.cs

Inicializa una nueva instancia de la clase Attachment con la cadena de contenido y el objeto ContentType que se hayan especificado.

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)

Parámetros

fileName
String

Objeto String que contiene una ruta de acceso al archivo que se va a utilizar para crear estos datos adjuntos.

contentType
ContentType

Objeto ContentType que describe los datos de fileName.

Excepciones

ArgumentNullException

fileName es null.

ArgumentException

mediaType no tiene el formato correcto.

Se aplica a

Attachment(String, String)

Source:
Attachment.cs
Source:
Attachment.cs
Source:
Attachment.cs

Inicializa una nueva instancia de la clase Attachment con la cadena de contenido y la información de tipo MIME que se hayan especificado.

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)

Parámetros

fileName
String

Objeto String que incluye el contenido de estos datos adjuntos.

mediaType
String

Objeto String que contiene la información Content-Header MIME de estos datos adjuntos. Este valor puede ser null.

Excepciones

ArgumentNullException

fileName es null.

FormatException

mediaType no tiene el formato correcto.

Ejemplos

En el ejemplo de código siguiente se muestra cómo llamar a este constructor.

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();
}

Comentarios

Si mediaType es null o igual a String.Empty (""), la MediaType propiedad de estos datos adjuntos se establece en Plain. Si mediaType no null es y no es una cadena de longitud cero, se usa para construir el ContentType asociado a estos datos adjuntos.

Se aplica a

Attachment(Stream, String, String)

Source:
Attachment.cs
Source:
Attachment.cs
Source:
Attachment.cs

Inicializa una nueva instancia de la clase Attachment con la cadena, el nombre y la información de tipo MIME que se hayan especificado.

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)

Parámetros

contentStream
Stream

Objeto Stream legible que incluye el contenido de estos datos adjuntos.

name
String

Objeto String que contiene el valor de la propiedad Name del objeto ContentType asociado a estos datos adjuntos. Este valor puede ser null.

mediaType
String

Objeto String que contiene la información Content-Header MIME de estos datos adjuntos. Este valor puede ser null.

Excepciones

ArgumentNullException

stream es null.

FormatException

mediaType no tiene el formato correcto.

Ejemplos

En el ejemplo de código siguiente se muestra cómo llamar a este constructor.

// 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();
}

Comentarios

Si mediaType no null es o igual a String.Empty (""), se usa para construir la ContentType clase asociada a estos datos adjuntos.

Si mediaType y name ambos contienen Name información, se usa el valor especificado en name . La propiedad TransferEncoding está establecida en Base64.

Si la propiedad de CanSeek la secuencia es false, los datos adjuntos y el MailMessage que lo contiene no son reutilizables. Debe proporcionar una secuencia que se pueda buscar para reutilizar los datos adjuntos.

Se aplica a