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How to create folder and store file in user mobile [duplicate]

I want to make the browser download a PDF document from server instead of opening the file in browser itself. I am using C#.
Below is my sample code which I used. It not working..
string filename = "Sample server url";
response.redirect(filename);

You should look at the "Content-Disposition" header; for example setting "Content-Disposition" to "attachment; filename=foo.pdf" will prompt the user (typically) with a "Save as: foo.pdf" dialog, rather than opening it. This, however, needs to come from the request that is doing the download, so you can't do this during a redirect. However, ASP.NET offers Response.TransmitFile for this purpose. For example (assuming you aren't using MVC, which has other preferred options):
Response.Clear();
Response.ContentType = "application/pdf";
Response.AppendHeader("Content-Disposition", "attachment; filename=foo.pdf");
Response.TransmitFile(filePath);
Response.End();

If you want to render the file(s) so that you could save them at your end instead of opening in the browser, you may try the following code snippet:
//create new MemoryStream object and add PDF file’s content to outStream.
MemoryStream outStream = new MemoryStream();
//specify the duration of time before a page cached on a browser expires
Response.Expires = 0;
//specify the property to buffer the output page
Response.Buffer = true;
//erase any buffered HTML output
Response.ClearContent();
//add a new HTML header and value to the Response sent to the client
Response.AddHeader(“content-disposition”, “inline; filename=” + “output.pdf”);
//specify the HTTP content type for Response as Pdf
Response.ContentType = “application/pdf”;
//write specified information of current HTTP output to Byte array
Response.BinaryWrite(outStream.ToArray());
//close the output stream
outStream.Close();
//end the processing of the current page to ensure that no other HTML content is sent
Response.End();
However, if you want to download the file using a client application then you'll have to use the WebClient class.

I use this by setting inline parameter to true it will show in browser false it will show save as dialog in browser.
public void ExportReport(XtraReport report, string fileName, string fileType, bool inline)
{
MemoryStream stream = new MemoryStream();
Response.Clear();
if (fileType == "xls")
report.ExportToXls(stream);
if (fileType == "pdf")
report.ExportToPdf(stream);
if (fileType == "rtf")
report.ExportToRtf(stream);
if (fileType == "csv")
report.ExportToCsv(stream);
Response.ContentType = "application/" + fileType;
Response.AddHeader("Accept-Header", stream.Length.ToString());
Response.AddHeader("Content-Disposition", String.Format("{0}; filename={1}.{2}", (inline ? "Inline" : "Attachment"), fileName, fileType));
Response.AddHeader("Content-Length", stream.Length.ToString());
//Response.ContentEncoding = System.Text.Encoding.Default;
Response.BinaryWrite(stream.ToArray());
Response.End();
}

In case if we are trying to write a bytes array then we can use below one.
Response.Clear();
Response.ContentType = "application/pdf";
Response.AppendHeader("Content-Disposition", "attachment; filename=file.pdf");
Response.BufferOutput = true;
Response.AddHeader("Content-Length", docBytes.Length.ToString());
Response.BinaryWrite(docBytes);
Response.End();

They are almost same in most of the cases but there is a difference:
Add Header will replace the previous entry with the same key
Append header will not replace the key, rather will add another one.

Force download ASP.Net

In ASP.Net (with C#) I'm trying to create a .DAT file with plain text in it and send it to the browser and force download. I've tried several things but I can't get it working. In my aspx-file there is an ImageButton
<asp:ImageButton ID="btnSave" runat="server" CausesValidation="False" ImageUrl="~/Images/Stages/Database/Save.png" OnClick="btnSave_OnClick" Width="26px" />
In the OnClick-method I'm trying to create the file and send it to the browser.
protected void btnSave_OnClick(object sender, EventArgs e)
{
string file = "test.dat";
string fileName = "~\\Stages\\Broekx\\Databanken\\" + file;
FileStream fs = new FileStream(MapPath(fileName), FileMode.Open);
long cntBytes = new FileInfo(MapPath(fileName)).Length;
byte[] byteArray = new byte[Convert.ToInt32(cntBytes)];
fs.Read(byteArray, 0, Convert.ToInt32(cntBytes));
fs.Close();
ImageButton btnSave = (ImageButton)FormViewStagesDummy.FindControl("btnSave");
btnSave.Visible = false;
File.Delete(Server.MapPath(fileName));
if (byteArray != null)
{
this.Response.Clear();
this.Response.ContentType = "text/plain";
this.Response.AddHeader("content-disposition", "attachment;filename=" + file);
this.Response.BinaryWrite(byteArray);
this.Response.End();
this.Response.Flush();
this.Response.Close();
}
}
The file test.dat exists in the correct folder and has to be deleted after it has been read into bytes. I've tried this without deleting the file and that wont work either.
After clicking btnSave the button has to be hidden, so that's why I set the parameter Visible to false.
I've also tried it with content-type "application/octet-stream" or with a PDF file and content-type "application/pdf" but nothing works. The page loads normally and no file is being downloaded.

Is the file string's path actually correct?
this.Response.AddHeader("content-disposition", "attachment;filename=" + file);
Should it not be filename?
Why are you deleting the file before it is written to the response? Would it not make more sense to serve the file via the response and then delete it?
i.e. call
File.Delete(Server.MapPath(fileName));
after the repsonse.
You should try:
Response.TransmitFile( Server.MapPath(fileName) );
Response.End();
TransmitFile is very efficient because it basically offloads the file streaming to IIS including potentially causing the file to get cached in the Kernal cache (based on IIS's caching rules).
Response.End();

Response.Clear();
Response.ClearContent();
Response.ClearHeaders();
Response.ContentType = "text/plain";
Response.AppendHeader("Content-Disposition", "attachment; filename = " + fileName);
Response.TransmitFile(Server.MapPath("~/foldername/" + fileName));
Response.End();

ASP - Prompt save file dialog from streamwriter

Currently I have the text file going to desktop, in ASP how can I prompt a file save dialog for the user? The result is string from the streamreader as "result" as follows:
StreamWriter FileWriter = new StreamWriter(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "file.txt"));
FileWriter.Write(result);
FileWriter.Close();

String FileName = filename;
String FilePath = filepath;
System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;
response.ClearContent();
response.Clear();
response.ContentType = "text/plain";
response.AddHeader("Content-Disposition", "attachment; filename=" + FileName + ";");
response.TransmitFile(FilePath + FileName);
response.Flush();
response.End();

Response.AppendHeader("Content-Disposition", "attachment");
StreamWriter FileWriter = new StreamWriter(Response.OutputStream);
FileWriter.Write(result);
I didn't try the code, but maybe you need to omit the call to FileWriter.Close() since it will try to dispose the stream. If not, then you should be using using instead. If it's too problematic, write to the stream directly with its Write method or use a MemoryStream.

An example from one of my apps that does it.
protected void Page_Load(object sender, EventArgs e)
{
string tempFileName = Request["tempFileName"]; // the temp file to stream
string attachFileName = Request["attachFileName"]; // the default name for the attached file
System.IO.FileInfo file = new System.IO.FileInfo(Path.GetTempPath() + tempFileName);
if (!file.Exists)
{
pFileNotFound.Visible = true;
lblFileName.Text = tempFileName;
}
else
{
// clear the current output content from the buffer
Response.Clear();
// add the header that specifies the default filename for the
// Download/SaveAs dialog
Response.AddHeader("Content-Disposition", "attachment; filename=" + attachFileName);
// add the header that specifies the file size, so that the browser
// can show the download progress
Response.AddHeader("Content-Length", file.Length.ToString());
// specify that the response is a stream that cannot be read by the
// client and must be downloaded
Response.ContentType = "application/octet-stream";
// send the file stream to the client
Response.WriteFile(file.FullName);
}
}

string path = Server.MapPath(your application path);
WebClient client = new WebClient();
byte[] data = client.DownloadData(new Uri(path));
Response.Clear();
Response.ContentType = "application/pdf";
Response.AppendHeader("Content-Disposition", String.Format("attachment; filename={0}", "aspnet.pdf"));
Response.OutputStream.Write(data, 0, data.Length);
try this code.. its helpful

Don't know if its still open but just to help others
Just use this code it should work to prompt the user to open a dialog for opening or saving the file on the system ....
byte[] bytesPDF = System.IO.File.ReadAllBytes(#"C:\sample.pdf");
if (bytesPDF != null)
{
Response.AddHeader("content-disposition", "attachment;filename= DownloadSample.pdf");
Response.ContentType = "application/octectstream";
Response.BinaryWrite(bytesPDF);
Response.End();
}

If I understand you correctly, you first had a 1-tier (desktop) app that was saving a file using C# to the user's file system. You are now trying to transition to a 2-tier app with your C# code running on the server tier, and the user's browser representing the other tier. There is nothing you can do in C# on the server to write a file to the browser user's file system directly.
That being said, what you need to do is write the file to the HTTP response stream with a content type of something like application/octet-stream. Are you actually using ASP or ASP.NET? If the latter, you should have access to the response stream through a variety of means, but start with the Response object (available from the page, but also available via HttpContext.Current.Response).

Response.TransmitFile and delete it after transmission

I have to implement GEDCOM export in my site.
My .net code created one file at server when export to gedcom clicked.
Then I need to download it to client from server, as well as user should be asked where to save that file, meaning savedialog is required.
After it's downloaded, I want to delete that file from server.
I got one code to transmit file from server to client:
Response.ContentType = "text/xml";
Response.AppendHeader("Content-Disposition", "attachment; filename=" + FileName);
Response.TransmitFile(Server.MapPath("~/" + FileName));
Response.End();
from this LINK
but I am not able to delete the file after this code as Response.End ends response so whatever code written after that line is not execute.
If I do code to delete file before Response.End();, then file does not transmitted and I get an error.

Anything you put after Response.End won't get executed because it throws a ThreadAbortException to stop execution of the page at that point.
Try this instead:
string responseFile = Server.MapPath("~/" + FileName);
try{
Response.ContentType = "text/xml";
Response.AppendHeader("Content-Disposition", "attachment; filename=" + FileName);
Response.TransmitFile(responseFile);
Response.Flush();
}
finally {
File.Delete(responseFile);
}

If the file is reasonably small, you can load it into a byte array so that you can delete the file while still being able to send the data:
Response.ContentType = "text/xml";
Response.AppendHeader("Content-Disposition", "attachment; filename=" + FileName);
string path = Server.MapPath("~/" + FileName);
byte[] data = File.ReadAllBytes(path);
File.Delete(path);
Response.BinaryWrite(data);
Response.End();

Allowing user to download from my site through Response.WriteFile()

I am trying to programatically download a file through clicking a link, on my site (it's a .doc file sitting on my web server). This is my code:
string File = Server.MapPath(#"filename.doc");
string FileName = "filename.doc";
if (System.IO.File.Exists(FileName))
{
FileInfo fileInfo = new FileInfo(File);
long Length = fileInfo.Length;
Response.ContentType = "Application/msword";
Response.AddHeader("Content-Disposition", "attachment; filename=" + fileInfo.Name);
Response.AddHeader("Content-Length", Length.ToString());
Response.WriteFile(fileInfo.FullName);
}
This is in a buttonclick event handler. Ok I could do something about the file path/file name code to make it neater, but when clicking the button, the page refreshes. On localhost, this code works fine and allows me to download the file ok. What am I doing wrong?
Thanks

Rather than having a button click event handler you could have a download.aspx page that you could link to instead.
This page could then have your code in the page load event. Also add Response.Clear(); before your Response.ContentType = "Application/msword"; line and also add Response.End(); after your Response.WriteFile(fileInfo.FullName); line.

Try a slightly modified version:
string File = Server.MapPath(#"filename.doc");
string FileName = "filename.doc";
if (System.IO.File.Exists(FileName))
{
FileInfo fileInfo = new FileInfo(File);
Response.Clear();
Response.ContentType = "Application/msword";
Response.AddHeader("Content-Disposition", "attachment; filename=" + fileInfo.Name);
Response.WriteFile(fileInfo.FullName);
Response.End();
}

Oh, you shouldn't do it in button click event handler. I suggest moving the whole thing to an HTTP Handler (.ashx) and use Response.Redirect or any other redirection method to take the user to that page. My answer to this question provides a sample.
If you still want to do it in the event handler. Make sure you do a Response.End call after writing out the file.