public void Downloadfile(string sFileName, string sFilePath)
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ClearContent();
HttpContext.Current.Response.ClearHeaders();
HttpContext.Current.Response.ContentType = "APPLICATION/OCTET-STREAM";
String Header = "Attachment; Filename=" + sFileName;
HttpContext.Current.Response.AppendHeader("Content-Disposition", Header);
HttpContext.Current.Response.AppendHeader("Cache-Control", "no-cache");
System.IO.FileInfo Dfile = new System.IO.FileInfo(HttpContext.Current.Server.MapPath(sFilePath));
HttpContext.Current.Response.TransmitFile(Dfile.FullName);
HttpContext.Current.ApplicationInstance.CompleteRequest();
}
I have a download button, the click will return the call and download the corresponding file download, but sometimes file returns is detailt.aspx file. I do not understand what is happening.
I need help. Thanks a lot
This has worked for me with out issue for a while now.
public void Downloadfile(string sFileName, string sFilePath)
{
var file = new System.IO.FileInfo(sFilePath);
Response.Clear();
Response.AddHeader("Content-Disposition", "attachment; filename=" + sFileName);
Response.AddHeader("Content-Length", file.Length.ToString(CultureInfo.InvariantCulture));
Response.ContentType = "application/octet-stream";
Response.WriteFile(file.FullName);
Response.End();
}
Related
I am getting the exception http:/.168.11.8:/UploadedFiles/CustomerKYC/Photo/134_26581.jpg' is not a valid virtual path when I write either WriteFile or TranferFile in the following code. Please give me a code fix.
Response.Clear();
Response.ContentType = "application/octet-stream";
Response.AppendHeader("content-disposition", "filename=" +NavigateURLID.Value);
Response.WriteFile(Server.MapPath(url));
Response.Flush();
Response.End();
I need the file from the url to be downloaded. They are all image files only(jpg)
Try this code will help
Response.ContentType = ContentType;
Response.AppendHeader("Content-Disposition", "attachment; filename=" + Path.GetFileName(filePath));
Response.WriteFile(filePath);
Response.End();
Reference url: https://www.aspsnippets.com/Articles/Upload-and-Download-files-from-Folder-Directory-in-ASPNet-using-C-and-VBNet.aspx
I found out the answer after searching in Internet. The code is.
WebClient req=new WebClient();
HttpResponse response = HttpContext.Current.Response;
response.Clear();
response.ClearContent();
response.ClearHeaders();
response.Buffer= true;
response.AddHeader("Content-Disposition","attachment;filename=\"" +strURL + "\"");
byte[] data=req.DownloadData(strURL);
response.BinaryWrite(data);
response.End();
I have written some content to an Excel file using OpenXML, and I tried to transmit the file using Reponse.TransmitFile, but it is not working. When I debug the code it is not throwing any exception.
string filename = "Book1.xlsx";
try {
System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;
Response.ClearContent();
Response.Clear();
Response.ContentType = "application/vnd.ms-excel";
Response.AddHeader("Content-Length", Server.MapPath("~/" + filename).Length.ToString());
Response.AppendHeader("Content-Disposition", "attachment; filename=" + filename);
Response.TransmitFile(Server.MapPath("~/"+filename));
Response.Flush();
Response.End();
}
catch (Exception e) {
Console.WriteLine(e);
}
This is my code for downloading text file. But the server.transfer method is not able to resolve that path. It is giving "is not a valid virtual path error"
string filePath = #"D:/BCPResult/Cust_File.t`enter code here`xt";
Response.ContentType = "text/plain";
Response.AppendHeader("content-disposition",
"attachment; filename=" + filePath);
Response.TransmitFile(Server.MapPath(filePath));
Response.End();
Please guide me...
If your file path is not related to server you do not need Server.MapPath.
Also if you run your code in windows, path separator is \, not /.
This code must work:
string filePath = #"D:\BCPResult\Cust_File.txt";
Response.ContentType = "text/plain";
Response.AppendHeader("content-disposition", "attachment; filename=" + filePath);
Response.TransmitFile(filePath);
Response.End();
Use '\' (backslash) instead '/'.
string filePath = #"D:\BCPResult\Cust_File.txt";
or
string filePath = "D:\\BCPResult\\Cust_File.txt";
If You Are trying to access a file from the Remote URL or External URL like (https://www.example.com/)
then you have to Use for the web client like this
string url= "this is the URL of the file from where you want to access the file"
System.Net.WebClient webClient = new System.Net.WebClient();
byte[] bytes = webClient.DownloadData(url);
if (mimetype != null)
{
context.Response.ContentType = mimetype;
}
else
{
context.Response.ContentType = "Application/pdf";
}
context.Response.AppendHeader("Content-Disposition", "attachment; filename=" + fileName);
context.Response.BinaryWrite(bytes);
context.Response.End();
In asp.net MVC I can do something like the following which will open a stream:
Stream strm1 = GenerateReport(Id);
return File(strm1,
"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
"Report_" + reportId.ToString() + ".xlsx");
Notice how I am passing strm1 which is a stream. I can then name it Report_+ ...xlsx like the example above shows.
Is there a similar way to do this with asp.net web forms using c#.
You can use TransmitFile or WriteFile if the file is in your website folder.
string fileName = string.Format("Report_{0}.xlsx", reportId);
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.AddHeader("Content-Disposition",
string.Format("attachment; filename={0}", fileName));
Response.TransmitFile(fileName);
Response.End();
Stream
If your data is already in Memory, you want this method which writes the response in chunks.
Stream stm1 = GenerateReport(Id);
Int16 bufferSize = 1024;
byte[] buffer = new byte[bufferSize + 1];
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.AddHeader("Content-Disposition",
string.Format("attachment; filename=\"Report_{0}.xlsx\";", reportId));
Response.BufferOutput = false;
int count = stm1.Read(buffer, 0, bufferSize);
while (count > 0)
{
Response.OutputStream.Write(buffer, 0, count);
count = stm1.Read(buffer, 0, bufferSize);
}
I use this extension to send a stream as a downloadable file:
public static class ToDownloadExtention
{
public static void ToDownload(this Stream stream, string fileName, HttpResponse response)
{
response.Clear();
response.ContentType = "application/octet-stream";
response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}", fileName));
stream.CopyTo(response.OutputStream);
response.End();
}
}
And the usage is:
var stream = new MemoryStream();
stream.ToDownload("someFileName.ext",Response);
Or if you have a stream ready to be written, simply copy it to response stream:
Response.Clear();
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.AddHeader("Content-Disposition", "attachment; filename={your file name}");
Response.OutputStream.Write(stream, 0, stream.length);
Response.End();
Added same code just for visibility
I have a problem in my project.
I have some code for downloading content as: .doc, .zip etc
It was working fine until chrome update for version 12, after that the browser shows an error message: "Download Interrupted".
I already tested in other browsers (Chrome 11, FF and IE8) and everything works fine.
An code sample is:
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.AppendHeader("Content-Type", "application/msword");
HttpContext.Current.Response.AppendHeader("Content-disposition", "attachment; filename=" + filename + ".doc");
HttpContext.Current.Response.AppendHeader("Content-Transfer-Encoding", "binary");
HttpContext.Current.Response.Write(strBody);
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.Close();
Someone know what can be happening or how I can fix that?
Ps. Sorry my english, I'm brazilian :)
According to an answer in this forum adding Response.End() solved the issue.
In your case, it would be
HttpContext.Current.Response.Write(strBody);
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End();
HttpContext.Current.Response.Close();
I am getting my binary data from sql server database with this code and it is working in all browser;
DataTable table = SiteFileAccess.GetDataByFileID(fileId);
byte[] b = (byte[])table.Rows[0]["FileData"];
Response.Clear();
Response.AddHeader("Content-Disposition", "attachment; filename=" + table.Rows[0]["FileName"].ToString());
Response.AddHeader("Content-Length", b.Length.ToString());
Response.ContentType = "application/octet-stream";
Response.BinaryWrite(b);
Response.Flush();
Response.End();
See the above code and fix it according to your need. Let me know If you need further information
string applicationName = Session["ApplicationName_UtilityDetail"].ToString();
HttpWebRequest objRequest = (HttpWebRequest)WebRequest.Create(Session["DownloadLink_UtilityDetail"].ToString());
HttpWebResponse objResponse = (HttpWebResponse)objRequest.GetResponse();
int bufferSize = 1;
Response.Clear();
Response.ClearHeaders();
Response.ClearContent();
Response.AppendHeader("Content-Disposition:", "attachment; filename=" + applicationName + ".zip");
Response.AppendHeader("Content-Length", objResponse.ContentLength.ToString());
Response.ContentType = "application/download";
byte[] byteBuffer = new byte[bufferSize + 1];
MemoryStream memStrm = new MemoryStream(byteBuffer, true);
Stream strm = objRequest.GetResponse().GetResponseStream();
byte[] bytes = new byte[bufferSize + 1];
while (strm.Read(byteBuffer, 0, byteBuffer.Length) > 0)
{
Response.BinaryWrite(memStrm.ToArray());
Response.Flush();
}
Response.Close();
Response.End();
memStrm.Close();
memStrm.Dispose();
strm.Dispose();
Try this:
Response.Buffer = true;
Response.Clear();
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.AddHeader("Content-Disposition", "attachment; filename=yourExcelFileName.xlsx;");
Response.BinaryWrite(yourByteArray);
Response.End();