Getting image from wewbsite

[Johnny Jörgensen]

Does anybody know how you can extract an image fron a webpage loaded into a
webbrowser control and either save it to file OR save it in a database?

Cheers,
Johnny J.

[Mythran]

Re: Getting image from wewbsite



"Johnny Jörgensen" <jojo@altcom.se wrote in message
news:Ot3LSKHKIH A.3672@TK2MSFTN GP02.phx.gbl...

Does anybody know how you can extract an image fron a webpage loaded into
a webbrowser control and either save it to file OR save it in a database?
>
Cheers,
Johnny J.
>

You need to read in the image as if you were reading in a webpage....firs t,
open the web page and parse the path to the image...then, you can use the
following code to get the byte-array of the image and store to a file or
data column in a database.

// BEGIN C#

string url =
@"http://www.co.merced.c a.us/CountyWeb/images/GeneralActive.g if";
HttpWebRequest request =
(HttpWebRequest ) WebRequest.Crea te(url);
HttpWebResponse response =
(HttpWebRespons e) request.GetResp onse();

byte[] bytes;
using (Stream stream = response.GetRes ponseStream()) {
bytes = new byte[response.Conten tLength];
stream.Read(byt es, 0, bytes.Length);
}

// Now we have a byte array to do as we wish, saving to a file
now.
FileStream fs = File.Create(@"C :\GeneralActive .gif");
fs.Write(bytes, 0, bytes.Length);
fs.Close();

// OR write to a database.
// To do this, create an IMAGE (SQL Server) column and just copy
// the byte array into the field for a DataRow. An Image column
// maps to a byte-array in a DataColumn in a DataRow.

// END C#

There may be an easier or better way in a more recent version of the .Net
Framework though... :)


HTH,
Mythran

[Cor Ligthert[MVP]]

Re: Getting image from wewbsite

Johny,

As soon as you know its url location you can download it using

DownloadFile
http://msdn2.microsoft.com/en-us/lib...le(VS.71).aspx

To get that in a webbrowser you mostly needs a lot of mshtml

http://support.microsoft.com/kb/311284

Cor

[Herfried K. Wagner [MVP]]

Re: Getting image from wewbsite

"Johnny Jörgensen" <jojo@altcom.se schrieb:

Does anybody know how you can extract an image fron a webpage loaded into
a webbrowser control and either save it to file OR save it in a database?

'My.Computer.Ne twork.DownloadF ile'
'System.Net.Web Client.Download File'

You can store the binary data in the database as a BLOB.

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://dotnet.mvps.org/dotnet/faqs/>

[Johnny Jörgensen]

Re: Getting image from wewbsite

Thanks for the suggestions all of you.

Howevet, having had time to think about it, it seems like I'm missing
something here.

You see, as I wrote, I already have a webpage loaded in a webbrowser
containing the image I want to save to a database field.

So there should be no reason for downloading it AGAIN (using extra time to
do that). There MUST be a way to "pluck out" the image from the webbrowser
control in a form that's database saveable.

Cheers,
Johnny J.





"Johnny Jörgensen" <jojo@altcom.se skrev i meddelandet
news:Ot3LSKHKIH A.3672@TK2MSFTN GP02.phx.gbl...

Does anybody know how you can extract an image fron a webpage loaded into
a webbrowser control and either save it to file OR save it in a database?
>
Cheers,
Johnny J.
>

[Nicholas Paldino [.NET/C# MVP]]

Re: Getting image from wewbsite

Johnny,

The following will help you do what you want:

http://msdn2.microsoft.com/en-us/lib...3052001_topic2

Be aware, however, that because of security issues, the UI to indicate
where to save the image must be presented, there is no way around it.


--
- Nicholas Paldino [.NET/C# MVP]
- mvp@spam.guard. caspershouse.co m

"Johnny Jörgensen" <jojo@altcom.se wrote in message
news:Od3NaYJKIH A.280@TK2MSFTNG P03.phx.gbl...

Thanks for the suggestions all of you.
>
Howevet, having had time to think about it, it seems like I'm missing
something here.
>
You see, as I wrote, I already have a webpage loaded in a webbrowser
containing the image I want to save to a database field.
>
So there should be no reason for downloading it AGAIN (using extra time to
do that). There MUST be a way to "pluck out" the image from the webbrowser
control in a form that's database saveable.
>
Cheers,
Johnny J.
>
>
>
>
>
"Johnny Jörgensen" <jojo@altcom.se skrev i meddelandet
news:Ot3LSKHKIH A.3672@TK2MSFTN GP02.phx.gbl...

>Does anybody know how you can extract an image fron a webpage loaded into
>a webbrowser control and either save it to file OR save it in a database?
>>
>Cheers,
>Johnny J.
>>

>
>

[Cor Ligthert[MVP]]

Re: Getting image from wewbsite

Johnny,

There is no image loaded in your webbrowser, a webbrowser is just using the
IE part of the OS. In the pages there is an image tag to the url about we
all are talking about in a way. That URL you can find using MSHTML (Which is
nothing more then the representation of the DHTML object model often called
***the*** DOM).

Cor

[Cor Ligthert[MVP]]

Re: Getting image from wewbsite


"Joey Joe Joe" <no@nothing.com schreef in bericht
news:%23Tr1ivXK IHA.280@TK2MSFT NGP03.phx.gbl.. .

That's exactly where they are. They're in your Temporary Internet Files
folder.
>

Which you could find in W98 and IE4 direct in the C drive folder, however a
little bit changed.

In XP it has all kind of GUID like other names, in Vista I don't even see it
even anymore.

Beside that are images mostly very short in cache because that they have
mostly a retention time of 0.

Cor

[Joey Joe Joe]

Re: Getting image from wewbsite

That's because the folder is hidden, but it's still there. In Vista (unless
you move it):

C:\Users\.....\ AppData\Local\M icrosoft\Window s\Temporary Internet Files

"Cor Ligthert[MVP]" <notmyfirstname @planet.nlwrote in message
news:A77391F8-8E07-44EE-B661-9FBCF795DDA8@mi crosoft.com...

>
"Joey Joe Joe" <no@nothing.com schreef in bericht
news:%23Tr1ivXK IHA.280@TK2MSFT NGP03.phx.gbl.. .

>That's exactly where they are. They're in your Temporary Internet Files
>folder.
>>

Which you could find in W98 and IE4 direct in the C drive folder, however
a little bit changed.
>
In XP it has all kind of GUID like other names, in Vista I don't even see
it even anymore.
>
Beside that are images mostly very short in cache because that they have
mostly a retention time of 0.
>
Cor

[Lloyd Sheen]

Re: Getting image from wewbsite


"Joey Joe Joe" <no@nothing.com wrote in message
news:umCuqFgKIH A.3516@TK2MSFTN GP02.phx.gbl...

That's because the folder is hidden, but it's still there. In Vista
(unless you move it):
>
C:\Users\.....\ AppData\Local\M icrosoft\Window s\Temporary Internet Files
>
"Cor Ligthert[MVP]" <notmyfirstname @planet.nlwrote in message
news:A77391F8-8E07-44EE-B661-9FBCF795DDA8@mi crosoft.com...

>>
>"Joey Joe Joe" <no@nothing.com schreef in bericht
>news:%23Tr1ivX KIHA.280@TK2MSF TNGP03.phx.gbl. ..

>>That's exactly where they are. They're in your Temporary Internet Files
>>folder.
>>>

>Which you could find in W98 and IE4 direct in the C drive folder, however
>a little bit changed.
>>
>In XP it has all kind of GUID like other names, in Vista I don't even see
>it even anymore.
>>
>Beside that are images mostly very short in cache because that they have
>mostly a retention time of 0.
>>
>Cor

>

Simplest way to find the temp files in Vista is to use Tools/Internet
Options/General Tab.

Click on Settings then View Files

LS

[Cor Ligthert[MVP]]

Re: Getting image from wewbsite

Thanks Lloyd,