Send Binary Stream To Browser And Then Update The Page?
Mar 15, 2011
I have an ASP.NET page with a text status and a button to export an Excel file. When the user clicks the button, I want to generate the file on the fly and return it to the client as binary stream. Then I want to change the text status to show success/failure.
So far I can generate and send the file no problem, but obviously the statuses don't get displayed, since the server response was used to send the file and not a new updated page with the new status.
I'm not sure what's the cleanest way to approach this. I can think of something but is it the best way:
User clicks on button. File is generated and saved as a stream in the session. Statuses are updated and the page with the new statuses is returned to the client. A piece of Javascript on the page opens a 3rd party page which retrieves the saved stream from the session.
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Aug 1, 2010
I was wondering if there is any difference in performance (or any other important factor) between a file sent to the browser from our server by this method :
For i = 1 To fileSize chunk
If Not Response.IsClientConnected Then Exit For
Response.BinaryWrite stream.Read(chunk)
Response.Flush
Next
VS
the old plain file access method that the IIS comes with.
We are working on a file manager handler for security reasons and would like to know what is the performance hit.
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Feb 3, 2011
I have a problem with deserializing in C#/ASP.NET, which gives the exact error:
The input stream is not a valid binary format. The starting contents (in bytes) are: 41-41-45-41-41-41-44-2F-2F-2F-2F-2F-41-51-41-41-41 ...
What I am trying to do
I have a structure with 3 classes. I have a class A which is a base class, and then class B and C which are derived from A.
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I cannot use BINARY as the length is around 15.000.
My code...
[code]...
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Nov 1, 2011
Any code snippet or third party utilities to do this? Anything built into .NET libraries?
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Jul 28, 2010
I don't think there is a way around this but figured I'd ask... We have an application where a user can generate PDF documents that are streamed to the browser. There is some additional functionality going on behind the scene and I would like to be able to display a message to the user (via updating a literal tag on the page). I don't get any errors when doing this but the page isn't updated and the message isn't displayed. My guess is that streaming the document blocks any other content from going down to the client. In particular, we're using CeTe Dynamic PDF and calling one of their methods but I think it's essentially just doing a Response.BinaryWrite to stream out the PDF.
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Nov 1, 2010
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Feb 27, 2010
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Jul 21, 2010
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this is my code in cs
public
partial
class
Default4 : System.Web.UI.Page,ICallbackEventHandler
{
{
[Code]....
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I have been trying to add BLOB Image from Oracle Database table to Email content as HTML table elemnt.
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[CODE]..
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Sep 20, 2010
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Aug 6, 2010
Looking for the best technique on handling or at least some documentation showing an example.
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Gridview control withing an update panel (also various controls used for filtering NOT IN UPDATE PANEL)
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Feb 22, 2011
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Oct 11, 2010
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hssfworkbook.Write(file)
Return file
End Function
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Apr 15, 2010
I have a page that have
[Code]....
[Code]....
And The ImageViewer Page Have
[Code]....
when i click the button for the first time it worked and the debugger go to the load of the Image Viewer page ,and when
i click the button again, it does not go to the image viewer page load at all (some kind of cache),of course if i remove the update
panel it will work perfectly, but i need it with update panel , the above code is a smplified test version of what i trying to do,
i need to read binary image with update panel(orginally i dont have a physical image, only binary)
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How to Update Binary Image on Formview
[Code]....
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along with a gridview update file that I store in my database
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i will be passing the xml file like this:
[code]....
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Error 1 The best overloaded method match for 'System.Xml.Linq.XDocument.Load(string)' has some invalid arguments
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Dec 24, 2010
I'm looking for possible ways for sending files from browser to server.
One obvious way is using form with enctype='multipart/form-data'.
I wonder if there are other ways than this.
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It's not flash based, but it sends the file in a way that it gives you a progress bar, but when you send a file with form with enctype='multipart/form-data' the whole file will be send to the server so you can't actually show a progress bar of uploading process.
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