devxlogo

DownloadFile – Send a file to the client browser

DownloadFile – Send a file to the client browser

' Open the standard dialog to download a file located on the server' whose virtual path is passed as an argument. This routine is useful when' you want to download a file that is otherwise processed by IIS.  ' This routine must be included in an asp.net page, so that it can access ' the Server and Response objects.Sub DownloadFile(ByVal virtualPath As String)    ' retrieve the physical path of the file to download, and create    ' a FileInfo object to read its properties    Dim FilePath As String = Server.MapPath(virtualPath)    Dim TargetFile As New System.IO.FileInfo(FilePath)      ' clear the current output content from the buffer    Response.Clear()    ' add the header that specifies the default filename for the Download/    ' SaveAs dialog    Response.AddHeader("Content-Disposition", "attachment; filename=" + _        TargetFile.Name)    ' add the header that specifies the file size, so that the browser    ' can show the download progress    Response.AddHeader("Content-Length", TargetFile.Length.ToString())    ' specify that the response is a stream that cannot be read by the    ' client and must be downloaded    Response.ContentType = "application/octet-stream"    ' send the file stream to the client    Response.WriteFile(TargetFile.FullName)    ' stop the execution of this page    Response.End()End Sub

See also  How to Avoid Money Transfer Scams  
devxblackblue

About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

About Our Journalist