ContentType::Boundary Property
.NET Framework (current version)
Gets or sets the value of the boundary parameter included in the Content-Type header represented by this instance.
Assembly: System (in System.dll)
In the following example of a Content-Type header, the value of the Boundary parameter is "-----boundary---0".
content-type: multipart/mixed; boundary=-----boundary---0
Set this property to null or String::Empty to remove the boundary information from the header.
The syntax of the Content-Type header is described in RFC 2045 Section 5.1. An in-depth discussion of the boundary parameter is contained in RFC 2046 Section 5.1.1. These RFCs are available at http://www.ietf.org.
The following code example displays the value of the Boundary property.
static void CreateMessageWithMultipleViews( String^ server, String^ recipients ) { // Create a message and set up the recipients. MailMessage^ message = gcnew MailMessage( L"jane@contoso.com",recipients,L"This e-mail message has multiple views.",L"This is some plain text." ); // Construct the alternate body as HTML. String^ body = L"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\">"; body = String::Concat( body, L"<HTML><HEAD><META http-equiv=Content-Type content=\"text/html; charset=iso-8859-1\">" ); body = String::Concat( body, L"</HEAD><BODY><DIV><FONT face=Arial color=#ff0000 size=2>this is some HTML text" ); body = String::Concat( body, L"</FONT></DIV></BODY></HTML>" ); // Add the alternate body to the message. AlternateView^ alternate = AlternateView::CreateAlternateViewFromString(body); message->AlternateViews->Add(alternate); // Send the message. SmtpClient^ client = gcnew SmtpClient( server ); client->Credentials = CredentialCache::DefaultNetworkCredentials; client->Send( message ); // Display the values in the ContentType for the attachment. ContentType^ c = alternate->ContentType; Console::WriteLine( L"Content type" ); Console::WriteLine( c ); Console::WriteLine( L"Boundary {0}", c->Boundary ); Console::WriteLine( L"CharSet {0}", c->CharSet ); Console::WriteLine( L"MediaType {0}", c->MediaType ); Console::WriteLine( L"Name {0}", c->Name ); Console::WriteLine( L"Parameters: {0}", c->Parameters->Count ); IEnumerator^ myEnum = c->Parameters->GetEnumerator(); while ( myEnum->MoveNext() ) { DictionaryEntry^ d = safe_cast<DictionaryEntry^>(myEnum->Current); Console::WriteLine( L"{0} = {1}", d->Key, d->Value ); } Console::WriteLine(); alternate->~AlternateView(); }
.NET Framework
Available since 2.0
Available since 2.0
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