TIP: File download using ASP.NET

The following is a method to send a file to browser using ASP.NET

 

Dim fs As FileStream
Dim strPath = "C:\DownloadableFilePath\"
Dim strFileName As String = "Filename.pdf"
fs = File.Open(strPath & strFileName, FileMode.Open)
Dim bytBytes(fs.Length) As Byte
fs.Read(bytBytes, 0, fs.Length)
fs.Close()
Response.AddHeader("Content-disposition", "attachment; filename=" & strFileName)
Response.ContentType = "application/octet-stream"
Response.BinaryWrite(bytBytes)
Response.End() ‘or Response.Redirect("somepage.aspx",false)

 

Alternatively, you can also use (if it is available within web application folders) with WriteFile() as follows

 

Public Sub SecureFileDownload(ByVal inFile As String)
    Dim strFileNamePath As String
    strFileNamePath = Request.MapPath("SecureDirectory") & "\" & inFile
    Dim myFile As FileInfo = New FileInfo(strFileNamePath)
    Response.Clear()
    Response.AddHeader("Content-Disposition", "attachment; filename=" & myFile.Name)
    Response.AddHeader("Content-Length", myFile.Length.ToString())
    Response.ContentType = "application/octet-stream"
    Response.WriteFile(myFile.FullName)
    Response.End()
End Sub

 

thanks

Jag