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ContentDisposition.Inline Property

Gets or sets a Boolean value that determines the disposition type (Inline or Attachment) for an e-mail attachment.

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

public bool Inline { get; set; }

Property Value

Type: System.Boolean
true if content in the attachment is presented inline as part of the e-mail body; otherwise, false.

The Inline property sets the disposition type in the Content-Disposition header sent with the e-mail message. The disposition type can be used by software that displays e-mail to determine the correct way to present the e-mail attachments. Attachments with a disposition type of DispositionTypeNames.Inline are usually displayed when the user opens the e-mail. Attachments with a disposition type of DispositionTypeNames.Attachment are usually not opened until the user performs some additional action, such as clicking an icon that represents the attachment.

The Content-Disposition header is described in RFC 2183 available at http://www.ietf.org.

The following code example demonstrates how to set the value of this property.

		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 e-mail message.
			Attachment data = new Attachment(textMessage, MediaTypeNames.Text.Plain);
			// Send textMessage as part of the e-mail 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();
		}
public:
   static void CreateMessageInlineAttachment(String* server, String* 
   textMessage)
    {
        // Create a message and set up the recipients.
         MailMessage* message = new MailMessage(
            S"jane@contoso.com", 
            S"ben@contoso.com",
            S"An inline text message for you.", 
            S"Message: ");

        // Attach the message string to this e-mail message.
        Attachment* data = new Attachment(textMessage, MediaTypeNames::Text::Plain);
        // Send textMessage as part of the e-mail 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;
        client->Send(message);
        data->Dispose();
        client->Dispose();
    }

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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