function DownloadFileWindow(oGridMenu, args) {

var domElem = args.get_targetElement();

var text = $telerik.$(domElem).text();

//var isFolder = text.indexOf(".") == -1;

var gridContextMenuItems = oGridMenu.get_allItems();

for (var i = 0; i < gridContextMenuItems.length; i++) {

var menuItem = gridContextMenuItems[i];

if (menuItem.get_value() == "Download_File") {

OnClientFileOpen(sender, args)

__doPostBack(

"download");

}

}

}

string userSelection = Request.Params.Get("__EVENTTARGET");

if (userSelection == "download")

{

DownLoadFile();

}

void DownLoadFile()

{

string TargetFile = here i need physical path of the file
//radFileExplorer.TreeView.SelectedNode.GetFullPath("/");//radFileExplorer.Configuration.ViewPaths;

FileInfo file = new System.IO.FileInfo(TargetFile);

//-- if the file exists on the server

//set appropriate headers

if (file.Exists)

{

FileStream liveStream = new FileStream(TargetFile, FileMode.Open, FileAccess.Read);

byte[] buffer = new byte[Convert.ToInt32(liveStream.Length) + 1];

liveStream.Read(buffer, 0,

Convert.ToInt32(liveStream.Length));

liveStream.Close();

Response.ClearHeaders();

Response.ClearContent();

Response.Clear();

Response.ContentType =

"application/octet-stream";

Response.AddHeader(

"Content-Length", buffer.Length.ToString());

Response.AddHeader(

"Content-Disposition", "attachment; filename=" + file.Name);

Response.BinaryWrite(buffer);

}

}