Controller.File Method (Stream, String, String)
Creates a FileStreamResult object using the Stream object, the content type, and the target file name.
Namespace: System.Web.Mvc
Assembly: System.Web.Mvc (in System.Web.Mvc.dll)
Syntax
'Declaration
Protected Friend Overridable Function File ( _
fileStream As Stream, _
contentType As String, _
fileDownloadName As String _
) As FileStreamResult
protected internal virtual FileStreamResult File(
Stream fileStream,
string contentType,
string fileDownloadName
)
protected public:
virtual FileStreamResult^ File(
Stream^ fileStream,
String^ contentType,
String^ fileDownloadName
)
Parameters
- fileStream
Type: System.IO.Stream
The stream to send to the response.
- contentType
Type: System.String
The content type (MIME type)
- fileDownloadName
Type: System.String
The file name to use in the file-download dialog box that is displayed in the browser.
Return Value
Type: System.Web.Mvc.FileStreamResult
The file-stream result object.
Remarks
The fileDownloadName parameter is used to generate the content-disposition header. The result object that is prepared by this method is written to the response by the MVC framework when the object is executed. The MediaTypeNames class can be used to get the MIME type for a specific file name extension.
Examples
The following example shows how to open a file-download dialog box and set the file name to the name of the server file. The id parameter contains the server file name.
A Visual Studio project with source code is available to accompany this topic: Download.
public ActionResult ShowFileDLNStrm(string id) {
fileDetail fd = getFileDetailsStrm(id);
return File(fd._fs, fd.mimeType, id);
}
Public Function ShowFileDLNStrm(ByVal id As String) As ActionResult
Dim fd As fileDetail = getFileDetailsStrm(id)
Return File(fd._fs, fd.mimeType, id)
End Function