How to Call Sub in ASP

dpkbahuguna · December 26th, 2006, 12:49 AM

Hello all!

    I am beginner in ASP. I have to call a sub through <select>'s event onchange() how can i do that. I did something related to it but i couldnt do it. pls help here..

My ASP code is:
---------------------------------------------------------
<%@ language = vbscript%>
<%
    sub x()
        response.write("this is printing")
    end sub
%>

<html>
    <select name = dept Onchange = "x()">
        <option value = 1> > one </option>
        <option value = 2> > two </option>
    </select>
<html>
-----------------------------------------------------

why this is not working?

Thanks !!

DPK..

itHighway · December 31st, 2006, 04:04 PM

The reason is you are trying to execute ASP Script at OnChange Event.
At onChange you can only call JavaScript function NOT ASP Script.

However, if you submit the form at onChange Event and pass a value in query string and then read that value in sub procedure then you would be able to display the values in procedure.

woodyz · January 1st, 2007, 05:01 AM

Actually, you can call vbscript in a browser, as long as it is an IE browser.

Here is a little sample:

Code:

<script language='vbscript'>

sub btnTest_onclick
   msgbox "Here is one way..."
end sub

sub TestTwo
   msgbox "Well, another way!?"
end sub

</script>

<INPUT name='btnTest' type='button' value='VbScript Test' />
<INPUT name='btnTestTWo' type='button' value='VbScript Test Two' onclick='TestTwo' />

The issue with your sample is that you are declaring the code as being server side, where you need it to be client side - that is, running in the browser.

Woody Z
http://www.learntoprogramnow.com

dpkbahuguna · January 1st, 2007, 05:39 AM

A Great Thank and very very happy new year to you both
"Woodyz" and "ItHighway".

DPK..

dpkbahuguna · January 1st, 2007, 06:04 AM

Hi woodyz yes your code is working fine but will u give me the code to call this event on <select> (combobox) event like onChange.
I did it but i am unable to call it.

Thanks waiting for reply....

Quote:

quote:Originally posted by woodyz
Actually, you can call vbscript in a browser, as long as it is an IE browser.

Here is a little sample:

Code:

<script language='vbscript'>

sub btnTest_onclick
   msgbox "Here is one way..."
end sub

sub TestTwo
   msgbox "Well, another way!?"
end sub

</script>

<INPUT name='btnTest' type='button' value='VbScript Test' />
<INPUT name='btnTestTWo' type='button' value='VbScript Test Two' onclick='TestTwo' />

The issue with your sample is that you are declaring the code as being server side, where you need it to be client side - that is, running in the browser.

Woody Z
http://www.learntoprogramnow.com

DPK..

dpkbahuguna · January 1st, 2007, 06:10 AM

thanks IThighway,

But how can i submit button in ,select> onchange..?

Quote:

quote:Originally posted by itHighway
The reason is you are trying to execute ASP Script at OnChange Event.
At onChange you can only call JavaScript function NOT ASP Script.

However, if you submit the form at onChange Event and pass a value in query string and then read that value in sub procedure then you would be able to display the values in procedure.

DPK..

woodyz · January 1st, 2007, 11:41 AM

Quote:

quote:Originally posted by dpkbahuguna
Hi woodyz yes your code is working fine but will u give me the code to call this event on <select> (combobox) event like onChange.
I did it but i am unable to call it.

Thanks waiting for reply....

I bet you would find it useful to do a search on the web for this sort of thing. There are numerous tutorial and code snippets on how to use these events. Of course, you are probably going to be much better off doing this with Javascript rather than VBScript.

However - I might not be understanding your question. Is it that you want the form to submit whenever the user changes the selection in the dropdown? That can be done the same way (either with javascript or vbscript) by handling the onchange event. Or perhaps you are asking how to "reponse.write" something to the browser without posting back - in which case you'll need client side scripts (again, either Javascript or vbscript) that manipulate the document object.

It might be useful to you to better describe what you are trying to do.

Here is the code for running vbscript with the onchange event:

Code:

<script language='vbscript'>

sub DropdownTest
   msgbox "This is the dropdown test"
end sub

sub cboTestTwo_onchange
   msgbox "This is the second dropdown test"
end sub

</script>

<select name='cboTest'onchange='DropdownTest'>
<option value='1'>One</option>
<option value='2'>Two</option>
<option value='3'>Three</option>
<option value='4'>Four</option>
</select>
<br/>
<select name='cboTestTwo'>
<option value='5'>Five</option>
<option value='6'>Six</option>
<option value='7'>Seven</option>
<option value='8'>Eight</option>
</select>

Woody Z
http://www.learntoprogramnow.com

woodyz · January 1st, 2007, 11:44 AM

Quote:

quote:Originally posted by dpkbahuguna
Hello all!

    I am beginner in ASP. I have to call a sub through <select>'s event onchange() how can i do that. I did something related to it but i couldnt do it. pls help here..

My ASP code is:
---------------------------------------------------------
<%@ language = vbscript%>
<%
    sub x()
        response.write("this is printing")
    end sub
%>

<html>
    <select name = dept Onchange = "x()">
        <option value = 1> > one </option>
        <option value = 2> > two </option>
    </select>
<html>
-----------------------------------------------------

why this is not working?

Thanks !!

DPK..

Perhaps I am misunderstanding your request entirely.
Please clarify what you are trying to do.

The reason this code does not work is because the code what is within the <% %> markup runs on the server side, and the onchange event is handled on the client side. They are running in different contexts on different machines.

So this brings up the question: What is the RESULT you are trying to achieve?

Woody Z
http://www.learntoprogramnow.com

itHighway · January 31st, 2007, 03:46 PM

I am sorry, did not understand what you are trying to do

http://www.ithighway.co.uk/