I want multiple file uploder file manager in asp.net in c#....plzz help me....i hardly need it

<dx:ASPxFileManager ID="ASPxFileManager1" runat="server" Width="827px">
        <Settings ThumbnailFolder="~\content\thumb\" />
        <SettingsToolbar ShowDownloadButton="True" />
        <SettingsEditing AllowDelete="True" AllowRename="True" />
       <SettingsUpload Enabled="False">

</SettingsUpload>
    </dx:ASPxFileManager>
    <div id="upload-div">
    <asp:FileUpload ID="Uploadaudio" runat="server" AllowMultiple="true" Width="200px"/>
    </div>

    <div id="upload-submit">
    <asp:Button runat="server" ID="uploadedFile" Text="Upload" OnClick="uploadFile_Click" />
    </div>

protected void uploadFile_Click(object sender, EventArgs e)
{
    if (Uploadaudio.HasFiles)
   {
       foreach (HttpPostedFile uploadedFile in Uploadaudio.PostedFiles)
       {

           uploadedFile.SaveAs(System.IO.Path.Combine(Server.MapPath("~/content/uploads/bkfiles/" + BookId.ToString(CultureInfo.InvariantCulture) + "/"),
           uploadedFile.FileName));

       }
   }
}