Web Development

How to download images after page load

24-Sep-05 22:09

You forgot to ask a question.

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ihsany.com24-Sep-05 0:22

ihsany.com

24-Sep-05 0:22

How to download images after page load in ASP.NET?

just thank's for your help..

Guffa24-Sep-05 0:30

24-Sep-05 0:30

What do you mean?

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ihsany.com24-Sep-05 0:57

ihsany.com

24-Sep-05 0:57

Hi,

i mean that, when my web page load, all items will be there except images.Page open slowly,because there are several images(not big size).
i want to send all words,tables,items load to client and then images.

thanks for relation..

Guffa24-Sep-05 8:36

24-Sep-05 8:36

Specify the width and height of all images. Then the browser knows what the size of the images will be, and can show the entire layout of the page correctly before any pictures are loaded.

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Vasudevan Deepak Kumar26-Sep-05 1:36

Vasudevan Deepak Kumar

26-Sep-05 1:36

You can also you 'id' attribute to all the required Img Tags and then in the window.onLoad event, you can use a javaScript to download required images.

Vasudevan Deepak Kumar
Personal Web: http://www.lavanyadeepak.tk/
I Blog At: http://deepak.blogdrive.com/

Guffa26-Sep-05 2:12

26-Sep-05 2:12

The drawback is that javascript has to be enabled in order for any images to be loaded.

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Vasudevan Deepak Kumar26-Sep-05 2:42

Vasudevan Deepak Kumar

26-Sep-05 2:42

Guffa,

Even the Dreamweaver I think puts some preLoad Images JavaScript. Is'nt it? This image trick is kind of natural one used by many sites. Is'nt it?

Vasudevan Deepak Kumar
Personal Web: http://www.lavanyadeepak.tk/
I Blog At: http://deepak.blogdrive.com/

Guffa26-Sep-05 3:55

how to get rid of from a variable

26-Sep-05 3:55

A preloader loads the images that are not displayed directly on the page, e.g. images that will be loaded by mouseover effects. The images will be loaded when needed even if javascript is disabled.

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karanba23-Sep-05 11:45

karanba

23-Sep-05 11:45

Hi all,
I use javascript in asp as language, and want to ask which way is best to dispose from a variable or from an object..

1. way
variable_name = null;

2. way
variable_name = void(0);

thnks.

karanba

Re: how to get rid of from a variable

Vasudevan Deepak Kumar26-Sep-05 1:38

Vasudevan Deepak Kumar

26-Sep-05 1:38

Karanba,

A scoped variable within a function or like automatically gets identified for garbage collection by the runtime when the function body ends.

Of course for variables defined globally, the Page_Unload should dictate the lifetime of the same.

For Html and ActiveX Objects, of course, nulling would make a better deal.

Did this attend to your query?

Vasudevan Deepak Kumar
Personal Web: http://www.lavanyadeepak.tk/
I Blog At: http://deepak.blogdrive.com/

Oracledataapter

wpcolleen23-Sep-05 6:36

wpcolleen

23-Sep-05 6:36

OracleDataAdapter class takes care of opening and close db connection automatically. If I'm using ref cursors to populate the OracleDataAdapter does it take care of closing the cursors.

Clueless

catch ActiveX events in a web page

Calc2023-Sep-05 1:00

Calc20

23-Sep-05 1:00

How can I catch events from an ActiveX control in a web page?
I've tried using VBScrip, and I didn't succed.
If you could give some sample code it would be great.

Thanks.

Marius

Re: catch ActiveX events in a web page

minhpc_bk23-Sep-05 6:00

minhpc_bk

23-Sep-05 6:00

Hi there,
Below is an example of creating an event handler for the PlayStateChange event of the Windows Media Player ActiveX control:

<OBJECT height="43.22%" width="34.8%" id="objWMP" classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95" VIEWASTEXT>
</OBJECT>
         
<script type="text/vbscript">
  Sub objWMP_PlayStateChange(state)
	alert(state)
  End Sub
</script>

The name of the event handler should be in the format: objectid_eventname

For JScript, the sample code looks something like:

<script type="text/Jscript" event="PlayStateChange(state)" for="objWMP">
	alert(state);
</script>

Re: catch ActiveX events in a web page

Calc2025-Sep-05 20:21

Calc20

25-Sep-05 20:21

Thanks a lot.

Regular Expressions

Brendan Vogt22-Sep-05 21:12

Brendan Vogt

22-Sep-05 21:12

Hi,

I need help with my regular expressions please.

I have the following expression that checks for an alpha numeric field, but I want it to check for other characters like ê, ë, etc, basically the most common characters used, and including the ., What I have is the follwoing:
^[a-zA-Z0-9]+$

I also need a good URL checker to check if the URL entered is a valid URL.

I checked on http://RegExLib.com but couldn't find what I am looking for.

I hope someone can help me.

Regards,
Brendan

Re: Regular Expressions

minhpc_bk23-Sep-05 6:01

minhpc_bk

23-Sep-05 6:01

Brendan,
You can enumerate other charaters in the current regular expression, for example:

^[a-zA-Z0-9êë]+$

You can quickly get the expression to check if the URL is valid from VS:

http://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?

control output of datagrid with listbox

europhreak10122-Sep-05 5:29

europhreak101

22-Sep-05 5:29

i'm using dreamweaver mx2004 and asp.net. i have a listbox with makes of cars ie. acura, audi etc.., i would like to make a datagrid that is filtered by what the user chooses from the listbox. for example when the user chooses acure from the listbox, datagrid will display only acura cars. how can i do this. please help!

enjoycrack22-Sep-05 21:13

enjoycrack

22-Sep-05 21:13

in the event handler of the listbox, everytime an item in the listbox is selected, u just get the selected value and re-bind data to the datagrid based on the selected value

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europhreak23-Sep-05 10:04

europhreak

23-Sep-05 10:04

can you help me with this please?

enjoycrack23-Sep-05 18:17

enjoycrack

23-Sep-05 18:17

firstly, u have to done with getting the selected value from the listbox at server-side
secondly, based on the selected value, just fetch data from DB and bind it to the datagrid.

Just go ahead and post the specific question/problems that u r stuck on here...

CPians are please to help u Frown | :(

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