Attachment Constructors
Important
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Initializes a new instance of the Attachment class.
Attachment(String) |
Initializes a new instance of the Attachment class with the specified content string. |
Attachment(Stream, ContentType) |
Initializes a new instance of the Attachment class with the specified stream and content type. |
Attachment(Stream, String) |
Initializes a new instance of the Attachment class with the specified stream and name. |
Attachment(String, ContentType) |
Initializes a new instance of the Attachment class with the specified content string and ContentType. |
Attachment(String, String) |
Initializes a new instance of the Attachment class with the specified content string and MIME type information. |
Attachment(Stream, String, String) |
Initializes a new instance of the Attachment class with the specified stream, name, and MIME type information. |
- Source:
- Attachment.cs
- Source:
- Attachment.cs
- Source:
- Attachment.cs
Initializes a new instance of the Attachment class with the specified content string.
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)
Parameters
Exceptions
fileName
is null
.
fileName
is empty.
Examples
The following code example demonstrates how to call this 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();
}
Remarks
The properties are set as follows:
Property | Value |
---|---|
MediaType | Plain. |
TransferEncoding | QuotedPrintable. |
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 2.0, 2.1 |
- Source:
- Attachment.cs
- Source:
- Attachment.cs
- Source:
- Attachment.cs
Initializes a new instance of the Attachment class with the specified stream and content type.
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)
Parameters
- contentType
- ContentType
A ContentType that describes the data in contentStream
.
Exceptions
Examples
The following code example demonstrates how to call this 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();
}
Remarks
The TransferEncoding property is set to Base64.
If the stream's CanSeek property is false
, the attachment and the MailMessage that contains it are not reusable. You must supply a stream that can be searched to reuse an attachment.
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 2.0, 2.1 |
- Source:
- Attachment.cs
- Source:
- Attachment.cs
- Source:
- Attachment.cs
Initializes a new instance of the Attachment class with the specified stream and name.
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)
Parameters
- name
- String
A String that contains the value for the Name property of the ContentType associated with this attachment. This value can be null
.
Exceptions
contentStream
is null
.
Examples
The following code example demonstrates how to call this 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;
}
Remarks
If name
is not null
or equal to String.Empty (""), the ContentType for this attachment is constructed with the Name property set to name
. The TransferEncoding property is set to Base64.
If the stream's CanSeek property is false
, the attachment and the MailMessage that contains it are not reusable. You must supply a stream that can be searched in order to reuse an attachment.
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 2.0, 2.1 |
- Source:
- Attachment.cs
- Source:
- Attachment.cs
- Source:
- Attachment.cs
Initializes a new instance of the Attachment class with the specified content string and 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)
Parameters
- contentType
- ContentType
A ContentType that describes the data in fileName
.
Exceptions
fileName
is null
.
mediaType
is not in the correct format.
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 2.0, 2.1 |
- Source:
- Attachment.cs
- Source:
- Attachment.cs
- Source:
- Attachment.cs
Initializes a new instance of the Attachment class with the specified content string and MIME type information.
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)
Parameters
- mediaType
- String
A String that contains the MIME Content-Header information for this attachment. This value can be null
.
Exceptions
fileName
is null
.
mediaType
is not in the correct format.
Examples
The following code example demonstrates how to call this 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();
}
Remarks
If mediaType
is null
or equal to String.Empty (""), the MediaType property for this attachment is set to Plain. If mediaType
is not null
and is not a zero-length string, it is used to construct the ContentType associated with this attachment.
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 2.0, 2.1 |
- Source:
- Attachment.cs
- Source:
- Attachment.cs
- Source:
- Attachment.cs
Initializes a new instance of the Attachment class with the specified stream, name, and MIME type information.
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)
Parameters
- name
- String
A String that contains the value for the Name property of the ContentType associated with this attachment. This value can be null
.
- mediaType
- String
A String that contains the MIME Content-Header information for this attachment. This value can be null
.
Exceptions
stream
is null
.
mediaType
is not in the correct format.
Examples
The following code example demonstrates how to call this 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();
}
Remarks
If mediaType
is not null
or equal to String.Empty (""), it is used to construct the ContentType class associated with this attachment.
If mediaType
and name
both contain Name information, the value specified in name
is used. The TransferEncoding property is set to Base64.
If the stream's CanSeek property is false
, the attachment and the MailMessage that contains it are not reusable. You must supply a stream that can be searched in order to reuse an attachment.
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 2.0, 2.1 |
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