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MailMessage Constructor (String, String, String, String)

Initializes a new instance of the MailMessage class.

Namespace:  System.Net.Mail
Assembly:  System (in System.dll)

public MailMessage(
	string from,
	string to,
	string subject,
	string body
)

Parameters

from
Type: System.String

A String that contains the address of the sender of the e-mail message.

to
Type: System.String

A String that contains the address of the recipient of the e-mail message.

subject
Type: System.String

A String that contains the subject text.

body
Type: System.String

A String that contains the message body.

ExceptionCondition
ArgumentNullException

from is null.

-or-

to is null.

ArgumentException

from is Empty ("").

-or-

to is Empty ("").

FormatException

from or to is malformed.

The properties for the new MailMessage object are initialized as follows:

Parameter

Property

from

From

  • to

  • subject

  • body

By default, the subject and content are assumed to use the default encoding based on local computer settings. Use the BodyEncoding and SubjectEncoding properties to specify different encodings.

The following code example demonstrates calling this constructor.

		public static void CreateTimeoutTestMessage(string server)
		{
			string to = "jane@contoso.com";
			string from = "ben@contoso.com";
			string subject = "Using the new SMTP client.";
			string body = @"Using this new feature, you can send an e-mail message from an application very easily.";
			MailMessage message = new MailMessage(from, to, subject, body);
			SmtpClient client = new SmtpClient(server);
			Console.WriteLine("Changing time out from {0} to 100.", client.Timeout);
			client.Timeout = 100;
			// Credentials are necessary if the server requires the client  
			// to authenticate before it will send e-mail on the client's behalf.
			client.Credentials = CredentialCache.DefaultNetworkCredentials;

      try {
			  client.Send(message);
			}  
			catch (Exception ex) {
			  Console.WriteLine("Exception caught in CreateTimeoutTestMessage(): {0}", 
                    ex.ToString() );			  
		  }
		}
public:
    static void CreateTimeoutTestMessage(String* server )
    {
        String* to = S"jane@contoso.com";
        String* from = S"ben@contoso.com";
        String* subject = S"Using the new SMTP client.";
        String* body  = S"Using this new feature, you can send an e-mail message from an application very easily.";
        MailMessage* message = new MailMessage(from, to, subject, body);
        SmtpClient* client = new SmtpClient(server);
        Console::WriteLine(S"Changing time out from {0} to 100.", __box(client->Timeout));
        client->Timeout = 100;
        // Credentials are necessary if the server requires the client 
        // to authenticate before it will send e-mail on the client's behalf.
       client->Credentials = CredentialCache::DefaultNetworkCredentials;
       client->Send(message);
    }

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0
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