public ActionResult Download(MemeViewModel meme)
{
try
{
MemeBL MemeBL = new MemeBL();
MemeBL.DownloadMeme(meme);
}
catch (Exception ex)
{
//todo: log exception
}
return PartialView("~/Views/Meme/_MemeDisplay.cshtml", meme);
}
public void DownloadMeme(MemeViewModel meme)
{
//Create a stream for the file
Stream stream = null;
//This controls how many bytes to read at a time and send to the client
int bytesToRead = 10000;
// Buffer to read bytes in chunk size specified above
byte[] buffer = new Byte[bytesToRead];
// The number of bytes read
try
{
//Create a WebRequest to get the file
HttpWebRequest fileReq = (HttpWebRequest)HttpWebRequest.Create(meme.FileUrl);
//Create a response for this request
HttpWebResponse fileResp = (HttpWebResponse)fileReq.GetResponse();
if (fileReq.ContentLength > 0)
fileResp.ContentLength = fileReq.ContentLength;
//Get the Stream returned from the response
stream = fileResp.GetResponseStream();
// prepare the response to the client. resp is the client Response
var resp = HttpContext.Current.Response;
//Indicate the type of data being sent
resp.ContentType = "application/octet-stream";
//Name the file
resp.AddHeader("Content-Disposition", "attachment; filename=\"" + meme.FileName + "\"");
resp.AddHeader("Content-Length", fileResp.ContentLength.ToString());
int length;
do
{
// Verify that the client is connected.
if (resp.IsClientConnected)
{
// Read data into the buffer.
length = stream.Read(buffer, 0, bytesToRead);
// and write it out to the response's output stream
resp.OutputStream.Write(buffer, 0, length);
// Flush the data
resp.Flush();
//Clear the buffer
buffer = new Byte[bytesToRead];
}
else
{
// cancel the download if client has disconnected
length = -1;
}
} while (length > 0); //Repeat until no data is read
}
finally
{
if (stream != null)
{
//Close the input stream
stream.Close();
}
}
}
public MemeViewModel GetMeme(string filename)
{
HttpContextWrapper context = new HttpContextWrapper(System.Web.HttpContext.Current);
var request = context.Request;
var url = request.Url.ToString();
var uri = new Uri(HttpContext.Current.Request.Url.AbsoluteUri).GetLeftPart(UriPartial.Authority);
if (!url.Contains(filename))
{
url = url.Replace("All", "Show") + "/" + filename;
}
MemeViewModel meme = new MemeViewModel
{
MemeFileType = ViewModels.MemeFileType.Created,
FileName = filename + Constants.IMAGE_EXTENSION,
ShareUrl = url,
FileUrl = uri + MemeBL.GetStoreVirtualPath() + filename + Constants.IMAGE_EXTENSION
};
return meme;
}
