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.NET Development
.NET Framework 3.5
MailMessage Class
 Subject Property

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This page is specific to
Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:
.NET Framework Class Library
MailMessage..::.Subject Property

Gets or sets the subject line for this e-mail message.

Namespace:  System.Net.Mail
Assembly:  System (in System.dll)
Visual Basic (Declaration)
Public Property Subject As String
Visual Basic (Usage)
Dim instance As MailMessage
Dim value As String

value = instance.Subject

instance.Subject = value
C#
public string Subject { get; set; }
Visual C++
public:
property String^ Subject {
    String^ get ();
    void set (String^ value);
}
JScript
public function get Subject () : String
public function set Subject (value : String)

Property Value

Type: System..::.String
A String that contains the subject content.

Specify the encoding used for the subject by using the SubjectEncoding property.

The following code example demonstrates setting the Subject property.

C#
        public static void CreateTestMessage2(string server)
        {
            string to = "jane@contoso.com";
            string from = "ben@contoso.com";
            MailMessage message = new MailMessage(from, to);
            message.Subject = "Using the new SMTP client.";
            message.Body = @"Using this new feature, you can send an e-mail message from an application very easily.";
            SmtpClient client = new SmtpClient(server);
            // Credentials are necessary if the server requires the client 
            // to authenticate before it will send e-mail on the client's behalf.
            client.UseDefaultCredentials = true;

      try {
              client.Send(message);
            }  
            catch (Exception ex) {
              Console.WriteLine("Exception caught in CreateTestMessage2(): {0}", 
                    ex.ToString() );              
      }              
        }

Visual C++
   static void CreateTestMessage2( String^ server )
   {
      String^ to = L"jane@contoso.com";
      String^ from = L"ben@contoso.com";
      MailMessage^ message = gcnew MailMessage( from,to );
      message->Subject = L"Using the new SMTP client.";
      message->Body = L"Using this new feature, you can send an e-mail message from an application very easily.";
      SmtpClient^ client = gcnew SmtpClient( server );

      // Credentials are necessary if the server requires the client 
      // to authenticate before it will send e-mail on the client's behalf.
      client->UseDefaultCredentials = true;
      client->Send( message );
      client->~SmtpClient();
   }



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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Undocumented Exception      Omer van Kloeten   |   Edit   |   Show History
Setting this will cause a System.ArgumentException when the value contains an Environment.NewLine.
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