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Xojo Plugin Examples

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(Xojo Plugin) MIME Content-Disposition Header Field

Explains the Content-Disposition header field and the properties used for setting or updating.

Chilkat Xojo Plugin Download

Xojo Plugin for Windows, Linux, Mac OS X, and ARM

//  The Content-Disposition header field provides a suggestion to the receiver for how the content is to be processed.
//  The standard dispositions are "inline" and "attachment".

//  A disposition of "attachment" indicates the content is something to be saved to a file and not processed (such as rendering for viewing inline).
//  A disposition of "inline" indicates the content should be processed (displayed) inline with the other parts of the MIME message.

//  For example, an email client could handle a JPG image based on the disposition.  If the disposition is "attachment",
//  the email client (such as Thunderbird, GMail, or Outlook) might simply list the JPG image as one of the email's attachments,
//  but won't display the JPG image.  If the disposition is "inline", the email client might display the JPG image, but not list
//  it as an attachment.

//  The Content-Disposition header field can also include a "filename" attribute.  This is the suggested default filename if the content
//  is to be saved to a file.

Dim success As Boolean
Dim mime As New Chilkat.Mime

//  The Content-Disposition header field can be set or modified in two ways.
//  1) By setting the Disposition and Filename properties.

//  2) By setting the entire contents of the Content-Disposition header with the SetHeaderField method.
//     Setting the Content-Disposition header automatically updates the Disposition and Filename properties.

//  For example:
mime.Disposition = "attachment"
mime.Filename = "ghost.jpg"

//  The Content-Disposition header field contains this:
//      Content-Disposition: attachment; filename="ghost.jpg"
System.DebugLog(mime.GetEntireHead())
System.DebugLog("-")

//  If we set the entire header field..
success = mime.SetHeaderField("Content-Disposition","attachment; filename=""zombie.jpg""")
//  The Content-Disposition header field now contains this:
//      Content-Disposition: attachment; filename="zombie.jpg"
System.DebugLog(mime.GetEntireHead())
System.DebugLog("-")

//  Notice how the Filename property has been updated
System.DebugLog("Filename property: " + mime.Filename)
System.DebugLog("-")

//  To change a particular attribute value, set the property.
mime.Filename = "skeleton.jpg"
System.DebugLog(mime.GetEntireHead())
System.DebugLog("-")

//  To remove the filename from the Content-Disposition header,
//  set the property to an empty string.
mime.Filename = ""
System.DebugLog(mime.GetEntireHead())
System.DebugLog("-")

 

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