Call function in codebehind from jscript in aspx page

  • Thread starter Thread starter moondaddy
  • Start date Start date
M

moondaddy

I'm using vb.net and have an aspx page where I want to call a function in
the code behind to do something on the backend and I want to call this
function from a jscript function in the aspx page. Furthermore I know there
will be a postback involved but the state of the page will not change at all
so I would like it to be as efficient as possible with no appearance to the
user that anything happened.

I saw in someone else's code where they achieved this by clicking on a <a>
tag that had an href attribute in it like this:
<a title="Add To Shopping Cart" href="<%#
HRefForSKU(DataBinder.Eval(Container.DataItem, "SKU1"))%>">

however in my case I don't want to put the href attribute in the <a> element
because it puts a line under all the text which we don't want. Instead I
was going to put in a onclick event that would pass a parameter to a jscript
function that would then try to do the same thing as the href attribute
above.

Any ideas?
 
Hi Moondaddy,

Let me play around with this tonight and I'll post back tomorrow.

Jim Cheshire, MCSE, MCSD [MSFT]
ASP.NET
Developer Support
(e-mail address removed)

This post is provided as-is with no warranties and confers no rights.

--------------------
 
Hi Moondaddy,

There are a few ways I've turned up that will allow you to do this:

1) Call __doPostBack explicitly to fire server side events.
2) Use a hidden form field to hold function information and then call a
function on the server based upon the value of that form field.

The final method is the best choice (only choice really) if you don't want
to cause a postback when the server-side function is called. It involves
using the WebService behavior and calling it from DHTML.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dndude/html
/dude01222001.asp

Jim Cheshire, MCSE, MCSD [MSFT]
ASP.NET
Developer Support
(e-mail address removed)

This post is provided as-is with no warranties and confers no rights.


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Date: Thu, 26 Feb 2004 23:55:45 GMT
Subject: RE: Call function in codebehind from jscript in aspx page
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Hi Moondaddy,

Let me play around with this tonight and I'll post back tomorrow.

Jim Cheshire, MCSE, MCSD [MSFT]
ASP.NET
Developer Support
(e-mail address removed)

This post is provided as-is with no warranties and confers no rights.

--------------------
From: "moondaddy" <[email protected]>
Subject: Call function in codebehind from jscript in aspx page
Date: Thu, 26 Feb 2004 16:45:00 -0600
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I'm using vb.net and have an aspx page where I want to call a function in
the code behind to do something on the backend and I want to call this
function from a jscript function in the aspx page. Furthermore I know there
will be a postback involved but the state of the page will not change at all
so I would like it to be as efficient as possible with no appearance to the
user that anything happened.

I saw in someone else's code where they achieved this by clicking on a <a>
tag that had an href attribute in it like this:
<a title="Add To Shopping Cart" href="<%#
HRefForSKU(DataBinder.Eval(Container.DataItem, "SKU1"))%>">

however in my case I don't want to put the href attribute in the <a> element
because it puts a line under all the text which we don't want. Instead I
was going to put in a onclick event that would pass a parameter to a jscript
function that would then try to do the same thing as the href attribute
above.

Any ideas?
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