ContentType Constructors
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Initializes a new instance of the ContentType class.
ContentType() |
Initializes a new default instance of the ContentType class. |
ContentType(String) |
Initializes a new instance of the ContentType class using the specified string. |
- Source:
- ContentType.cs
- Source:
- ContentType.cs
- Source:
- ContentType.cs
Initializes a new default instance of the ContentType class.
public:
ContentType();
public ContentType ();
Public Sub New ()
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
This constructor initializes the MediaType property to "application/octet-stream"
.
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:
- ContentType.cs
- Source:
- ContentType.cs
- Source:
- ContentType.cs
Initializes a new instance of the ContentType class using the specified string.
public:
ContentType(System::String ^ contentType);
public ContentType (string contentType);
new System.Net.Mime.ContentType : string -> System.Net.Mime.ContentType
Public Sub New (contentType As String)
Parameters
- contentType
- String
A String, for example, "text/plain; charset=us-ascii"
, that contains the MIME media type, subtype, and optional parameters.
Exceptions
contentType
is null
.
contentType
is Empty ("").
contentType
is in a form that cannot be parsed.
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
The syntax of the contentType
string is described in RFC 2045 Section 5.1 available at https://www.ietf.org.
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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