ContentType Class
Represents a MIME protocol Content-Type header.
Assembly: System (in System.dll)
| Name | Description | |
|---|---|---|
![]() | ContentType() | Initializes a new default instance of the ContentType class. |
![]() | ContentType(String) | Initializes a new instance of the ContentType class using the specified string. |
| Name | Description | |
|---|---|---|
![]() | Boundary | Gets or sets the value of the boundary parameter included in the Content-Type header represented by this instance. |
![]() | CharSet | Gets or sets the value of the charset parameter included in the Content-Type header represented by this instance. |
![]() | MediaType | Gets or sets the media type value included in the Content-Type header represented by this instance. |
![]() | Name | Gets or sets the value of the name parameter included in the Content-Type header represented by this instance. |
![]() | Parameters | Gets the dictionary that contains the parameters included in the Content-Type header represented by this instance. |
| Name | Description | |
|---|---|---|
![]() | Equals(Object) | Determines whether the content-type header of the specified ContentType object is equal to the content-type header of this object.(Overrides Object.Equals(Object).) |
![]() | Finalize() | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.) |
![]() | GetHashCode() | Determines the hash code of the specified ContentType object(Overrides Object.GetHashCode().) |
![]() | GetType() | |
![]() | MemberwiseClone() | |
![]() | ToString() | Returns a string representation of this ContentType object.(Overrides Object.ToString().) |
The information in the ContentType class is used to describe the data contained in an e-mail message in such a way that software that displays e-mail can present the content in an appropriate manner. ContentType is used with the Attachment class to specify the type of content in the attachment.
The syntax of the Content-Type header is described in RFC 2045 Section 5.1. RFC 2046 provides detailed information about MIME media types and their parameters. These RFCs are available at http://www.ietf.org.
The following code example sends an e-mail message with an attachment and displays the ContentDisposition properties for the attachment.
public static void CreateMessageWithAttachment(string server) { // Specify the file to be attached and sent. // This example assumes that a file named Data.xls exists in the // current working directory. string file = "data.xls"; // Create a message and set up the recipients. MailMessage message = new MailMessage( "jane@contoso.com", "ben@contoso.com", "Quarterly data report.", "See the attached spreadsheet."); // Create the file attachment for this e-mail message. Attachment data = new Attachment(file, 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); // Add the file attachment to this e-mail message. message.Attachments.Add(data); //Send the message. SmtpClient client = new SmtpClient(server); // Add credentials if the SMTP server requires them. client.Credentials = CredentialCache.DefaultNetworkCredentials; try { client.Send(message); } catch (Exception ex) { Console.WriteLine("Exception caught in CreateMessageWithAttachment(): {0}", ex.ToString() ); } // Display the values in the ContentDisposition for the attachment. ContentDisposition cd = data.ContentDisposition; Console.WriteLine("Content disposition"); Console.WriteLine(cd.ToString()); Console.WriteLine("File {0}", cd.FileName); Console.WriteLine("Size {0}", cd.Size); Console.WriteLine("Creation {0}", cd.CreationDate); Console.WriteLine("Modification {0}", cd.ModificationDate); Console.WriteLine("Read {0}", cd.ReadDate); Console.WriteLine("Inline {0}", cd.Inline); Console.WriteLine("Parameters: {0}", cd.Parameters.Count); foreach (DictionaryEntry d in cd.Parameters) { Console.WriteLine("{0} = {1}", d.Key, d.Value); } data.Dispose(); }
Available since 2.0
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.


