I have a pdf file and i have shown it in web broswer like this,
WebClient client = new WebClient();
Byte[] buffer = client.DownloadData(sFileName);
if (buffer != null)
{
Response.Clear();
Response.ContentType = "application/pdf";
Response.Flush();
Response.BinaryWrite(buffer);
}
But my problem is when i am going to show the pdf in local server it is showing all the pages,but same code when run in live server it is showing some of pages blank.I have tested so many days for this and not found any result.
Please help for this problem.
Thanks
Related
I have added pdf download to my application. When i click on download, browser is asking for whether to save or open the pdf document. But i need to set open as default so that it will not prompt for next time.
Here is my code:
Response.ContentType = "application/pdf";
Response.AppendHeader("Content-Disposition","attachment; filename=" + "Report.pdf");
Response.TransmitFile(pdfFileName);
You can't control that, it's in the scope of your clients browser to deal with that.
Hope it will help u.
Convert the attach file into buffer firstly..
Byte[] buffer = client.DownloadData(path);
if (buffer != null)
{
Response.ContentType = "application/pdf";
Response.AddHeader("content-length", buffer.Length.ToString());
Response.BinaryWrite(buffer);
}
I am using iTextSharp for creating pdf reports (files) and storing those on the web server where my application resides. I am able to create the file, go into the storage folder and open the file without a problem. Notice: The user is not to get the file automatically
downloaded on creation.
I want to give the user the option to download "old" reports from the server with a button.
This is working fine in IE (10) but not in Chrome and Firefox. I always get the error message:
There was an error opening this document. The file is damaged and could not be repaired.
I have this image button and on click I send the user to a Generic Handler (since my page contains Update Panels) according to this post (only using it partially for now).
This is the code that actually downloads the file:
public void ProcessRequest(HttpContext context)
{
var _fileName = context.Request.QueryString["fileName"];
using (var _output = new MemoryStream())
{
//var _fileSeverPath = context.Server.MapPath(_fileName);
context.Response.Clear();
context.Response.ContentType = "application/pdf";// "application/pdf";
//context.Response.AppendHeader("Content-Length", _fileName.Length.ToString());
context.Response.AppendHeader("Content-Disposition", string.Format("attachment; filename=" + Path.GetFileName(_fileName)));
context.Response.WriteFile(_fileName);
context.Response.Flush();
context.Response.Close();
context.Response.End();
}
}
As I said, this works fine in IE but not in Chrome and Firefox.
When I open the file in Notepad it seams that I only get about 1/3 of the file when downloaded in Chrome and Firefox.
Any suggestions would be greatly appreciated. Been trying to resolve this for a few days now..
From HttpResponse.WriteFile Method (String)
When this method is used with large files, calling the method might
throw an exception. The size of the file that can be used with this
method depends on the hardware configuration of the Web server. For
more information, see article 812406, "PRB: Response.WriteFile Cannot
Download a Large File" on the Microsoft Knowledge Base Web site.
Try this instead:
public void ProcessRequest(HttpContext context)
{
var _fileName = context.Request.QueryString["fileName"];
context.Response.Clear();
context.Response.Buffer = true;
context.Response.ContentType = "application/pdf";
context.Response.AppendHeader(
"Content-Disposition",
string.Format("attachment; filename=" + Path.GetFileName(_fileName)));
using (var fs = new FileStream(_fileName, FileMode.Open, FileAccess.Read))
{
using (var sr = new StreamReader(fs, true))
{
int length = (int)fs.Length;
byte[] buffer;
using (BinaryReader br = new BinaryReader(fs, sr.CurrentEncoding))
{
buffer = br.ReadBytes(length);
context.Response.BinaryWrite(buffer);
}
}
}
context.Response.Flush();
context.Response.Close();
context.Response.End();
}
Ok, FINALLY.. I found the solution and it makes me feel like a fool at the same time..
Removed context.Response.Close(); ...then everything worked perfectly :)
I am opening PDF documents using the following ASP.NET code,
Response.BufferOutput = true;
Response.Clear();
Response.ContentType = "application/pdf";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(documentURL);
using (HttpWebResponse responseDDRINT = (HttpWebResponse)request.GetResponse())
{
using (Stream stream = responseDDRINT.GetResponseStream())
{
int bufferSize = 1024;
byte[] buffer = new byte[bufferSize];
int bytesRead;
while ((bytesRead = stream.Read(buffer, 0, bufferSize)) > 0)
{
Response.OutputStream.Write(buffer, 0, bytesRead);
}
Response.Flush();
}
}
My question is does anyone know how to present the PDF starting at a specifice page. For example, if the PDF document is 15 pages, we would like it to open with page 10 initially showing instead of opening at page 1.
I experimented with the "#page=" open parameter by adding this header, but it did nothing.
Response.AddHeader("content-disposition", "inline; filename=test.pdf#page=3");
You'll have to manipulate the PDF file on the fly.
Use something like http://pdfsharp.com/PDFsharp/ to stream out a copy of the file starting at a certain page.
Current versions of Adobe ready no longer support the page syntax, but they do support the bookmark syntax.
Why don't you make your document reachable through a regular link or through an HTTPHandler?
you may use a PDF manipulation library like ItextSharp to get your work done.
I got stuck with my ASP.Net export to PDF. Below are my codes. Please help.
Response.Clear();
Response.Buffer = true;
Response.Charset = Encoding.UTF8.HeaderName;
Response.ContentEncoding = Encoding.UTF8;
Response.Write(string.Format("<meta http-equiv=Content-Type content=text/html;charset={0}>", Encoding.UTF8.HeaderName));
Response.ContentType = "application/pdf";
Response.Headers.Add("Content-disposition", "attachment; filename=pdffilename.pdf");
StringBuilder sb = new StringBuilder();
sb.Append("MIME-Version: 1.0\r\n");
sb.Append("X-Document-Type: Worksheet\r\n");
sb.Append("Content-Type: multipart/related; boundary=\"----=mtrSystem\"\r\n\r\n\r\n");
sb.Append("------=mtrSystem\r\n");
sb.Append("Content-Type: text/html; charset=\"utf-8\"\r\n");
sb.Append("<html xmlns:o=\"urn:schemas-microsoft-com:office:office\"\r\n");
sb.Append("xmlns:x=\"urn:schemas-microsoft-com:office:pdf\">\r\n\r\n\r\n");
sb.Append("------=mtrSystem\r\n");
sb.Append("Content-ID: baiduimg\r\n");
sb.Append("Content-Transfer-Encoding: base64\r\n");
sb.Append("Content-Type: image/png\r\n\r\n");
Can i use this way to export my ASP.Net page to PDF?
Html-to-pdf.net allows for converting html to pdf. TO get the html from an asp.net page, use the following code:
StringWriter sw = new StringWriter();
Server.Execute("PageToConvert.aspx", sw);
string htmlCodeToConvert = sw.GetStringBuilder().ToString();
Then pass the html to the pdf generator:
public byte[] GetPdfBytesFromHtmlString (string htmlString)
You can then save the bytes to the response to send to client, or save on the server as a local file.
EDIT:
Something to keep in mind, html-to-pdf does cost money, but for my last project it was a justified expense. You can use the trial version to figure out what you needd.
I'm not entirely sure what you're trying to do, but generally I can highly recommend PDFSharp for creating PDF documents in code...
Currently, this code works fine in a regular browser window:
if (readerObj.Read())
{
filename = readerObj["TRANATTACHMENTNAME"].ToString();
fileBytes = (byte[])readerObj["TRANATTACHMENT"];
Response.Clear();
Response.ContentType="application/octet-stream";
Response.AddHeader("Content-Disposition", "attachment; filename=" + filename);
Response.BinaryWrite(fileBytes);
Response.Flush();
Response.End();
dbConnectorObj.Connection.Close();
dbConnectorObj = null;
return true;
}
Unfortunately, this window needs to be modal (i'm modifying an already existing application). When I run the window modally, there's no file download dialogue.
ASP.NET 2.0
Any thoughts?
I would change the way you are doing this and have the file be server via an HTTP handler. Then you can just link the the handle url passing in the pertinent data to pull correct file or perform authentication and the dialog will pop up regardless.