Does anyone know how to create an image (JPEG) from an HTTPResponse object? I
am working on system that has a map pop up from our GIS department. I want
create an image at runtime from this popup and display that image on the main
page instead of opening a new window. This image will be a memory stream
only, but will need to be kept from page to page, and printer if required.
Any help will be much appreciated. If anyone knows of any articles, etc
please forward. Thanks.
4  10516 
Use the Image.FromStrea m method.
--
HTH,
Kevin Spencer
Microsoft MVP
Professional Numbskull
Show me your certification without works,
and I'll show my certification
*by* my works.
"John Daly" <Jo******@discu ssions.microsof t.com> wrote in message
news:52******** *************** ***********@mic rosoft.com... Does anyone know how to create an image (JPEG) from an HTTPResponse
object? I
am working on system that has a map pop up from our GIS department. I want
create an image at runtime from this popup and display that image on the
main
page instead of opening a new window. This image will be a memory stream
only, but will need to be kept from page to page, and printer if required.
Any help will be much appreciated. If anyone knows of any articles, etc
please forward. Thanks.
Kevin,
Thanks for the reply. Maybe if I post some code you will have a better
understanding as to what I want to do.
CODE:
Imports System
Imports System.Net
Imports System.Drawing
Imports System.Drawing. Image
Imports System.IO
Public Class Form1
Private Sub Form1_Load(ByVa l sender As Object, ByVal e As
System.EventArg s) Handles Me.Load
'create the web request
Dim wr As WebRequest =
WebRequest.Crea te("http://localhost/eventcalendar/calHome.aspx")
'get the response into a stream
Dim st As Stream = wr.GetResponse. GetResponseStre am
'create the image
Dim bm As Image = Image.FromStrea m(st)
End Sub
End Class
The last line where I am using Image.FromStrea m is throughing an error
"Parameter is vot valid".
I am guesing that I have to get the data into a browser control, then copy
the contents of the browser to the clipboard and create my image that way. Is
it possible to do something like that?
"Kevin Spencer" wrote: Use the Image.FromStrea m method.
--
HTH,
Kevin Spencer
Microsoft MVP
Professional Numbskull
Show me your certification without works,
and I'll show my certification
*by* my works.
"John Daly" <Jo******@discu ssions.microsof t.com> wrote in message
news:52******** *************** ***********@mic rosoft.com... Does anyone know how to create an image (JPEG) from an HTTPResponse
object? I
am working on system that has a map pop up from our GIS department. I want
create an image at runtime from this popup and display that image on the
main
page instead of opening a new window. This image will be a memory stream
only, but will need to be kept from page to page, and printer if required.
Any help will be much appreciated. If anyone knows of any articles, etc
please forward. Thanks.
It doesn't look to me like you're requesting an image. It looks like you're
requesting an ASPX page.
--
HTH,
Kevin Spencer
Microsoft MVP
Professional Numbskull
Show me your certification without works,
and I'll show my certification
*by* my works.
"John Daly" <Jo******@discu ssions.microsof t.com> wrote in message
news:A4******** *************** ***********@mic rosoft.com... Kevin,
Thanks for the reply. Maybe if I post some code you will have a better
understanding as to what I want to do.
CODE:
Imports System
Imports System.Net
Imports System.Drawing
Imports System.Drawing. Image
Imports System.IO
Public Class Form1
Private Sub Form1_Load(ByVa l sender As Object, ByVal e As
System.EventArg s) Handles Me.Load
'create the web request
Dim wr As WebRequest =
WebRequest.Crea te("http://localhost/eventcalendar/calHome.aspx")
'get the response into a stream
Dim st As Stream = wr.GetResponse. GetResponseStre am
'create the image
Dim bm As Image = Image.FromStrea m(st)
End Sub
End Class
The last line where I am using Image.FromStrea m is throughing an error
"Parameter is vot valid".
I am guesing that I have to get the data into a browser control, then copy
the contents of the browser to the clipboard and create my image that way.
Is
it possible to do something like that?
"Kevin Spencer" wrote:
Use the Image.FromStrea m method.
--
HTH,
Kevin Spencer
Microsoft MVP
Professional Numbskull
Show me your certification without works,
and I'll show my certification
*by* my works.
"John Daly" <Jo******@discu ssions.microsof t.com> wrote in message
news:52******** *************** ***********@mic rosoft.com... > Does anyone know how to create an image (JPEG) from an HTTPResponse
> object? I
> am working on system that has a map pop up from our GIS department. I
> want
> create an image at runtime from this popup and display that image on
> the
> main
> page instead of opening a new window. This image will be a memory
> stream
> only, but will need to be kept from page to page, and printer if
> required.
>
> Any help will be much appreciated. If anyone knows of any articles, etc
> please forward. Thanks.
You shouldn't have to display in the browser and copy to clipboard. It
is possible to create an image directly from the web stream as long as
the stream represents an image. I have done it before with a URL that
denoted an jpeg
Try placing a jpeg on the server and downloading it. If it works, then
the problem is the aspx.
hth,
Alan.
This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
by: John Scott |
last post by:
I am storing an image in an SQL database and have one field as an image
datatype. I am also using a webservice to transport data.
I want to be able to resize the image and pass back a thumbnail image in a
byte of what is in the database.
I also want to be able to display this image in an <asp:image></asp:image>
control.
Is there any way to do this? Most of the examples that I've seen have used
|
by: David W. Simmonds |
last post by:
I know that I can create an Image object by using a path like
C:\MyPictures\pic.jpg, but how can I create an Image object by using a path
like /MyPictures/pic.jpg where the path is relative to the site. For
instance, if the site is http://www.foobar.com, then /MyPictures/pic.jpg
would be fully qualified by http://www.foobar.com/MyPictures/pic.jpg.
Presumably there is a way to get the fully qualified path by giving the
relative path.
|
by: Tom John |
last post by:
Hi
I am storing images in an access database, based on an MSDN article.
The code i use to store is as follows:
<code>
'Create the command object
Dim command As New OleDbCommand("ImageBlobUpdate", dataConnection)
Command.CommandType = CommandType.StoredProcedure)
|
by: christiang |
last post by:
Hi guys, I'd like to use Alexia thumbnail service. It's an interesting
service, you pass an url to its cgi and you get a thumbnail of that
url. Of course they don't have the screenshots of all the websites so I
have to check if the image returned is fine or not. This is not that
problematic, I can read the headers and understand if it is a jpg or a
gif (the error one). The problem that I have is that sometimes although
they have the...
|
by: paraidy |
last post by:
Hi all, as from object i need to read all byte from a file example c:
\myphoto.jpg and recreate the file with another name to another
directory c:\photo\recreatedphoto.jpg can someone write a small
example to do it?
thx a lot men :)
| | |
by: Adam Teale |
last post by:
hey guys
Is there a builtin/standard install method in python for retrieving or
finding out an image's dimensions?
A quick google found me this:
http://www.pythonware.com/library/pil/handbook/introduction.htm
but it looks like it is something I will need to install - I'd like to
be able to pass my script around to people without them needing any
|
by: pedrito |
last post by:
I've got an app that downloads images off the internet using anywhere from
1-20 threads concurrently (though generally around 4 threads).
I have a preview page that shows the images as they're downloading. The
threads that do the downloading trigger an event every 32K (the size of the
chunks I receive), at which point the images are drawn in the Preview page.
To create the images, I create a memory stream from the data and then use...
|
by: Mark B |
last post by:
I want to display a pre-designed graphical 'performance badge' on certain
webpages (round, about 2cm diameter) next to a salesperson's details.
I have a function, fGetPerformanceGrade(SalesPersonID as Long) as String to
retrieve that salesperson's grade (e.g. A+, A, A-, B+, B... D). Also one
other function, fGetMonthlySales(SalesPersonID as Long) as String to get
their sales figure, e.g. "$87K".
I want web visitors to be able to click...
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
|
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
|
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
| | |
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
|
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
| |
