[silverlight]

كود :

' This interface defines the basic properties and methods of a Downloader.

Imports System.Net

Public Interface IFileDownloader

#Region " Property "

    ' Basic settings of a Downloader
    Property Url() As Uri
    Property DownloadPath() As String
    Property TotalSize() As Long
    Property Credentials() As ICredentials
    Property Proxy() As IWebProxy

    ' Support the ""Pause"", ""Resume"" and Multi-Threads feature.
    Property IsRangeSupported() As Boolean
    Property StartPoint() As Long
    Property EndPoint() As Long

    ' The downloaded data and status.
    Property DownloadedSize() As Long
    Property CachedSize() As Integer
    Property HasChecked() As Boolean
    Property Status() As FileDownloadStatus
    ReadOnly Property TotalUsedTime() As TimeSpan

    ' Advanced settings of a Downloader
    Property BufferSize() As Integer
    Property BufferCountPerNotification() As Integer
    Property MaxCacheSize() As Integer

#End Region

#Region " Methods "

    Sub CheckUrl(<System.Runtime.InteropServices.Out()> ByRef fileName As String)
    Sub BeginDownload()
    Sub Download()
    Sub Pause()
    Sub [Resume]()
    Sub BeginResume()
    Sub Cancel()

#End Region

#Region " Events "

    Event DownloadCompleted As EventHandler(Of FileDownloadCompletedEventArgs)
    Event DownloadProgressChanged As EventHandler(Of FileDownloadProgressChangedEventArgs)
    Event StatusChanged As EventHandler

#End Region

End Interface