C# - Response.WriteFile - Write Out A Byte Stream
Sep 21, 2010Is is possible to write to the http response stream from a dynamically created bitmap using the Response.Write/WriteFile without saving the image to the hard drive?
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Similar Messages:
Web Forms :: Write Two Files Using Response.WriteFile?
Feb 2, 2011how to write two files using Response.WriteFile?
I tried the following
Response.AddHeader("Content-Disposition", "attachment; filename=" + textFile);
Response.Flush();
Response.WriteFile(FilePath);
Response.End();
streamWriter2.WriteLine(CodeFileText);
streamWriter2.Close();
Response.AddHeader("Content-Disposition", "attachment; filename=" + textFile2);
Response.Flush();
Response.WriteFile(FilePath2);
Response.End();
But it downloads the first and stops.
It doesnot go for second one.
HttpHandlers / Modules :: Write The Response Stream Content To A File On Disk
Jan 20, 2011I have an httpmodule and it has a handler for OnEndRequest. I am trying to write the HttpContext.Response.OutputStream to a file. I am trying to use the Read method of it. But when it is called the exception message i get is "Specified method is not supported". So i am not able to do what i want that is, write the response to a file on the disk. I am able to write the HttpContext.Request.InputStream to a file using its Read method which i do in a handler for OnBeginRequest.
View 2 RepliesJquery - How To Write A File To The Response Stream And Have A 'Working' Modal Window Show/hide
Feb 15, 2011I need to to export a file to the user. It takes 1-2 min to generate the file so I'd like to have the page go into a kind-of modal mode with a layover on the page and a 'Working' spinner showing. The problem is I can't make the modal stuff go away after Save File dialog is closed.
How can I remove the layover after the dialog is done?
Save A File / Stream To Local Folder From Response Output Stream?
Feb 22, 2011I have an excel file in my Response Output stream. I can Open the stream as a file after a prompt, but it doesn't seem I can save it directly to a specified folder on my client.
View 1 RepliesC# - Response.WriteFile Stopping Previous Request?
Dec 28, 2010I have a button that calls a click event to download a picture. In my click event I have some code to change my display as the Save dialog pops up. The issue I am having is that when the dialog comes up it stops the previous line of code from executing. How can I check to see that my code has executed before calling the function?
Here is my button event handler and function:
[code]....
.net - Hiding The Open Button When Doing A Response.WriteFile
Jan 29, 2010Response.ContentType = "pdf";
Response.AppendHeader("Content-Disposition", "attachment; filename=test.pdf");
Response.WriteFile(this.txtFileName, true);
Response.Flush();
Response.End();
which shows a prompt to download the file and the prompt by default has "Open", "Save" and "Cancel" buttons with "Cancel" selected by default.Is it possible for me to hide the "Open" button and force users to eitehr save or cancel?
Web Forms :: Use Response.WriteFile With Poping Up Another Window?
Aug 26, 2010I've made a user control with several LinkButtons on it. On click of any of these buttons executing following code:
Response.ContentType = "Response.ContentType";
Response.AddHeader("Content-Disposition", "filename=" + CorrectFileName);
Response.WriteFile(filename);
Response.End();
And I have to problems with it:
1. after user click on one of the buttons another ones doesn't response
2. I need to execute some code after user received file (delete copy of it from the server)
I suppose I need to open another window and call SaveFile dialog from it. But how can exactly do this? I've found example code of opening window or starting SaveFile dialog but not two of them together and I can't figure out how to put them together...
Web Forms :: Response.WriteFile Method Does Not Support Resume?
Mar 15, 2010I have an asp.net page.
Which is used to download files from server.
The page is using Response.WriteFile method to start download.
Every thing is working fine.
But download does not have resume support.
if I redirect user to that file without using Response.WriteFile method then it supports resume.
Web Forms :: Response.WriteFile Adds Square Characters?
Mar 30, 2010I've just installed VS 2010 RC and IIS7 with .NET framework 4.0 on a Windows 7 laptop (and I'm very new to this).
I'm trying to use Response.WriteFile to add a menu to an .aspx page, and it works but it also adds two square/unknown characters before the inserted text. Also, when I view the source of the displayed webpage in IE8, the source gets up to the point of the two squares, then shows an opening angle bracket (<) and then stops, although the rest of the webpage displays fine.
It doesn't matter whether the included file has any text in it or not, or whether it is an .html or .aspx file.
Response.Write doesn't have the problem.
(In FF and Opera, the inserted text is displayed as html code with a space (opera) or unknown character (FF) between each normal character. I'm not worried about those browsers as I'm developing soley for IE8)
.ashx Context.response.writefile - Use File On Remote Server?
Nov 27, 2010I'm using an .ashx handler to retrieve an image file... It queries a local database, which retrieves the URL of an image which is hosted on Amazon S3.
But I can't use context.response.write(AmazonS3URL) because it returns the error '...is not a virtual path'.
Can context.response.write only return files that are on the local machine? Or is there another function to call remote files?
Security :: Access Denied Error With Response.writefile Of UNC File In IIS7. Bug?
Mar 5, 2010I'm moving applications from IIS6 to IIS7.5 (win 7 an win server 2008 r2), when 2 applications (with identity impersonate) try to get a file with response.writefile only from a UNC path i'll get "access denied". In IIS6 and Visual Studio Developer Web Server, same code works. I can save file with FilePath.SaveAs and get name and length with FileInfo, but not download. After 2 days of nightmares I have tried to change
Response.WriteFile(filePath)
to
Response.BinaryWrite(File.ReadAllBytes(filePath))
and now work. My question is: can I have a microsoft developer to sacrificate for my avenge?)
HttpHandlers / Modules :: Reading Video From Byte Stream Using Handler?
Jan 1, 2011i have a application which use to store video in sql databasei want to have a function which should have return type of video so that i can pass it to player in next page, for that i have retrived it as byte stream but dont know how to return it as video file.if i am going wrong then suggest me some other way.Note video are based on authentication so no way to switch to file system
View 1 RepliesDatabases :: Read Excel Data From Stream Or Byte Array?
Jan 10, 2011My web page contains a file upload control that is used to select excel file. What my code does; is to read the content of that file and store its content to DB. Right now, I save this file to server and read its content using OLEDB.I want to know is there any way i can read the content without saving it on the server?
View 2 RepliesWhat's Difference Between Response.write And Response.output.write
Apr 22, 2010what is difference between Response.write and Response.output.write
View 2 RepliesC# - Return XML To The Response Stream?
Nov 10, 2010I'm trying to return an xml string from a IHttpHandler to a like this: context.Response.Write(xml); When I receive the response in my .aspx.cs I try to load the document as follows: var xml = XDocument.Load(xmlString); but I get an Illegal Characters in Path error message. I've also tried
context.Response.Write(context.Server.HtmlEncode(xml));
and
var xml = XDocument.Load(Server.HtmlDecode(xmlString));
but I get the same message. Is there any way I can return XML from my IHttpHandler?
C# - Convert Response Stream To An Image?
Aug 29, 2010in previously asked question answeres said they dont get what i want to do exactly so heres is the full code also i simply want that instead of a TABLESe i rendered an image( of the content ) on the page
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.IO;
using System.Text;
using System.Data;
using System.Drawing;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
System.Web.UI.WebControls.Panel panelmain = new System.Web.UI.WebControls.Panel();
System.Web.UI.WebControls.Literal abc = new System.Web.UI.WebControls.Literal();
abc.Text = "as<br/>dasdas<br/>dasdad";
DataSet ds = new DataSet();
DataTable dt;
DataRow dr;
DataColumn idCoulumn;
DataColumn nameCoulumn;
dt = new DataTable();
idCoulumn = new DataColumn("ID", Type.GetType("System.Int32"));
nameCoulumn = new DataColumn("Name", Type.GetType("System.String"));
dt.Columns.Add(idCoulumn);
dt.Columns.Add(nameCoulumn);
dr = dt.NewRow();
dr["ID"] = 1;
dr["Name"] = "Name1";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr["ID"] = 2;.............
C# - Render Response Stream With Jquery?
Jan 9, 2010MemoryStream export = new MemoryStream();
iCalendarSerializer serializer = new iCalendarSerializer(iCal);
serializer.Serialize(export,System.Text.Encoding.UTF8);
return export;
so I am using the C# DDay.iCal library for exporting my calendars. Serialize takes in a "stream" so I passed it a memory stream. I now have a generic handler that calls the method that contains the above code.
public class CalendarHandler : IHttpHandler
{
private Calendar service;
private Membership membershipS;
public void ProcessRequest(HttpContext context)
{
service = new Calendar ();
membershipS = new Membership (null);
string userName = context.User.Identity.Name;
Guid userId = membershipS.GetUsersId(userName);
context.Response.ContentType = "text/calendar";
// calls the export calendar(the code that showed above that uses dDay ical.
var t = service.ExportCalendar(userId);
t.WriteTo(context.Response.OutputStream);
}
public bool IsReusable
{
get
{
return false;
}
}
}
So now I wrote the icalendar to the Outputstream. Now I have a jquery post that goes to this method and now I am not sure how to take the OutputStream result that the jquery post will get and make it popup with a save dialog box.
$('#ExportCalendar').click(function(e)
{
$.post('../Models/CalendarHandler.ashx', null, function(r)
{
});
return false;
});
Insert Anywhere A String Into The Response Stream?
May 7, 2010I created a simple Http Module that starts a timer on the PreRequestHandler and stops the timer on the PostRequestHandler to calculate the time it took the page to load. I then create some simple html and write my results to Response.Write. Since I'm doing this in the PostRequestHandler it's adding my results after the </html> tag. That's fine for testing but I need in a scenario where the page needs to validate.
I can't seem to figure out how I could manipulate the Response object to insert my results before the </body> tag. Response.Write and Response.Output.Write don't have that flexibility and I couldn't see a way to work with the Response as a string. Am I missing something easy?
C# - Create A BitmapDecoder Off .Net Response Stream?
Dec 6, 2010We're getting this weird exception when trying to create a BitmapDecoder off an ASP.Net response stream. This is the line of code that throws the exception:
BitmapDecoder dec = BitmapDecoder.Create(
Request.Files[0].InputStream,
BitmapCreateOptions.PreservePixelFormat,
BitmapCacheOption.OnLoad);
Here's some info on the file being uploaded: Filename: bank statement.jpg, Content length: 266041, Mime type: image/jpeg
This is the exception stack trace:
System.IO.IOException: Cannot read from the stream. --->
System.Runtime.InteropServices.COMException (0x88982F72):
Exception from HRESULT: 0x88982F72 [code]...
how we can prevent this from happening?
Update Image Based On Response Stream?
Sep 20, 2010Is is possible to update an image on an HTML page using the response stream of an ASP.NET Generic Handler? For example, if I have the following code on a handler: [URL]
public void ProcessRequest (HttpContext context) {
context.Response.ContentType = "image/png";
context.Response.WriteFile("~/images/test.png");
}
How can I call the handler in jQuery, using .ajax, and set an image on the page equal to the image that is returned by the Handler? I am ignoring the query string variable at the moment as I just want to get this working. Secondly, if I can do above, how can I loop through all of DIVs on the page that are of class "content", select a guid out of a hidden field to use as my query string parameter, and update the associated image within the same content DIV tag? A content div tag would look as follows:
<div class="content">
<asp:TextBox runat="server" Id="HiddenField_1" Value="C142E68F-B118-4565-9A9E-B2347F0B6D5B"/>
<img src="#"/>
</div>
<div class="content">
<asp:TextBox runat="server" Id="HiddenField_2" Value="GJ38AD23-B118-4565-9A9E-B2347F0B6D5B"/>
<img src="#"/>
</div>
I would like to have all the images updated on a periodic interval, so essentially, as a quick recap, I would need to have: A loop through all of my DIVs of class "content", occuring every n. seconds. Extractation the GUID from the hidden field. A call to my ASHX handler to get the updated image. Set the returned image to the corrisponding image on the page. Is this something that would be difficult to achieve? If not, what would I need to do to make this function in the above manner?
Write Response.write Within Update Panel?
Oct 6, 2010i am calling a function which is inside Homescroll.ascx.cs from Homescroll.ascx so i wrote on Homescroll.ascx as <% Response.Write(scroll()); %> but all this is in update panel,and i am getting errors. so is their any other way to call function from homescroll.ascx to homescroll.ascx.cs,instead of response.write();
View 3 RepliesArchitecture :: How To Handle An Excel Stream And The Http Response
Jan 27, 2011I'm using .net 3.5 and am currently creating a web application used to generate a report through Aspose.CellsActually, the page is composed in a form where I get the configuration of the report I have to generate. The "generation" button is in an update panel. When I click on it, the "generation" button is hidden and a progress bar appears. When the excel file is generated, I save it in a memory stream and I send it back to the aspx page where I change the headers to allow the file's download.
View 3 RepliesExamine WebResponse Without Affecting The Underlying Response Stream In .NET?
Oct 27, 2010After a call to initial HttpWebResponse.GetResponseStream() and reading through the stream, that stream is done for and cannot be reused.
I have a situation where I need to examine the content of the response and if it is of a certain data, get another page and then pass the new response down the line. Otherwise, pass down the original response as is. The only problem is that after examining the response to check for this "special data", that response is no good to the downstream code.
The only way, I can think of, to make this transparent to the downstream code, is to create a derived class of HttpWebResponse, and somehow cache the data streamed, and pass that cached stream down the line instead of the initial stream. I'm not sure if that's even feasible since I haven't looked into it further.
MVC :: Unable To Remove The Cookie From The Response Stream After Reading It?
Sep 29, 2010I am trying to use a custom ITempDataProvider provider to store TempData in a browser's cookie instead of session state. However, everything works fine except that I am unable to remove the cookie from the Response stream after reading it. The code exexutes fine but the cookie won't go away.
[Code]....
And in my controller:
[Code]....