ContentDisposition.DispositionType 屬性

定義

命名空間:

System.Net.Mime

組件:

System.Net.Mail.dll

來源:

ContentDisposition.cs

取得或設定電子郵件附件的配置類型。

public:
 property System::String ^ DispositionType { System::String ^ get(); void set(System::String ^ value); };

public string DispositionType { get; set; }

member this.DispositionType : string with get, set

Public Property DispositionType As String

屬性值

String

String，包含配置類型。 這個值沒有限制，但通常是其中一個 DispositionType 值。

例外狀況

ArgumentNullException

為設定作業指定的值為 null。

ArgumentException

為設定作業指定的值等於 Empty ("")。

範例

下列程式代碼範例示範如何設定此屬性的值。

static void CreateMessageWithAttachment4( String^ server, String^ to )
{
   
   // Specify the file to be attached and sent.
   // This example uses a file on a UNC share.
   String^ file = L"\\\\share3\\c$\\reports\\data.xls";
   
   // Create a message and set up the recipients.
   MailMessage^ message = gcnew MailMessage( L"ReportMailer@contoso.com",to,L"Quarterly data report",L"See the attached spreadsheet." );
   
   // Create  the file attachment for this email message.
   Attachment^ data = gcnew Attachment("qtr3.xls", MediaTypeNames::Application::Octet);
   
   // Add time stamp information for the file.
   ContentDisposition^ disposition = data->ContentDisposition;
   disposition->CreationDate = System::IO::File::GetCreationTime( file );
   disposition->ModificationDate = System::IO::File::GetLastWriteTime( file );
   disposition->ReadDate = System::IO::File::GetLastAccessTime( file );
   disposition->DispositionType = DispositionTypeNames::Attachment;
   
   // Add the file attachment to this email message.
   message->Attachments->Add( data );
   
   //Send the message.
   SmtpClient^ client = gcnew SmtpClient( server );
   
   // Add credentials if the SMTP server requires them.
   client->Credentials = dynamic_cast<ICredentialsByHost^>(CredentialCache::DefaultNetworkCredentials);
   client->Send( message );
   
   // Display the message headers.
   array<String^>^keys = message->Headers->AllKeys;
   Console::WriteLine( L"Headers" );
   IEnumerator^ myEnum3 = keys->GetEnumerator();
   while ( myEnum3->MoveNext() )
   {
      String^ s = safe_cast<String^>(myEnum3->Current);
      Console::WriteLine( L"{0}:", s );
      Console::WriteLine( L"    {0}", message->Headers[ s ] );
   }

   data->~Attachment();
   client->~SmtpClient();
}

public static void CreateMessageWithAttachment4(string server, string to)
{
    // Specify the file to be attached and sent.
    // This example uses a file on a UNC share.
    string file = @"\\share3\c$\reports\data.xls";
    // Create a message and set up the recipients.
    MailMessage message = new MailMessage(
       "ReportMailer@contoso.com",
       to,
       "Quarterly data report",
       "See the attached spreadsheet.");

    // Create  the file attachment for this email message.
    Attachment data = new Attachment("qtr3.xls", MediaTypeNames.Application.Octet);
    // Add time stamp information for the file.
    ContentDisposition disposition = data.ContentDisposition;
    disposition.CreationDate = System.IO.File.GetCreationTime(file);
    disposition.ModificationDate = System.IO.File.GetLastWriteTime(file);
    disposition.ReadDate = System.IO.File.GetLastAccessTime(file);
    disposition.DispositionType = DispositionTypeNames.Attachment;
    // Add the file attachment to this email message.
    message.Attachments.Add(data);
    //Send the message.
    SmtpClient client = new SmtpClient(server);
    // Add credentials if the SMTP server requires them.
    client.Credentials = (ICredentialsByHost)CredentialCache.DefaultNetworkCredentials;
    client.Send(message);
    // Display the message headers.
    string[] keys = message.Headers.AllKeys;
    Console.WriteLine("Headers");
    foreach (string s in keys)
    {
        Console.WriteLine("{0}:", s);
        Console.WriteLine("    {0}", message.Headers[s]);
    }
    data.Dispose();
}

備註

DispositionType屬性值可由顯示電子郵件的軟體使用，以判斷呈現電子郵件附件的正確方式。 Inline 當使用者開啟電子郵件時，通常會顯示附件。 Attachment 用戶執行一些動作之前，通常不會開啟附件，例如按下代表附件的圖示。

Content-Disposition 標頭會在 的 https://www.ietf.orgRFC 2183 中說明。