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asp.net In a repeater is it possible to call a public function from another class?

Answer 1

+1 A:

create Base class for your pages. Put your common function there. so it will be available for all inherited child pages.

Saar 2009-11-23 09:49:09

Answer 2

A:

Do you use a master page? You could drop it in there if you do.

I would do something like this:

On every content page that inherits from the master page you need:

<%@ MasterType VirtualPath="[path to your master page]" %>

This allows you to get to the public methods on the master.

On your content page, whenever you need to call the Test method:

Master.Test([your int value]);

adrianos 2009-11-23 09:52:53

Yes I do. Can you give an example how I would call, from the repeater, a public function stored in the master page?

Anthony 2009-11-23 09:58:23

updated the answer, let me know how you get on.

adrianos 2009-11-23 10:15:17

Indeed this works. Thanks! The question now is: is it better to put those common function in the master page or in a base class? If I had multiple master pages then it would make sense to use the base class but in my case I only have one master page. Decisions, decisions...

Anthony 2009-11-23 10:15:40

I use multiple master pages but they all inherit a common master.

adrianos 2009-11-23 10:21:04

Most people seem to suggest to go for a base class for this kind of functionality instead of putting those common functions in the master page. Also if you have a webpage which doesn't depend on the master page then you're stuck. With a base class you can still use it. see this post for example:http://stackoverflow.com/questions/738777/base-page-or-base-master-page-or-nested-mastersand this article: http://dotnetslackers.com/articles/aspnet/Four-Helpful-Features-to-Add-to-Your-Base-Page-Class.aspxTechnically speaking both solutions work of course.

Anthony 2009-11-23 10:37:42

Interesting. I always use master pages so it works for me, but it's good to know the options.

adrianos 2009-11-23 10:48:13

Answer 3

A:

Can't

<td><%# Test((int)Eval("MyCol1"))%></td>

Be represented by

<td><%# Eval("MyCol1", "Test: {0}") %></td>

Or is there more to your test function that that?

Mark Holland 2009-11-23 13:05:22

Yes the Test function was just an example. There is more to it in reality.

Anthony 2009-11-23 20:39:00

Fair enough. What about the using the OnItemDataBound event and calling the method from there instead?

Mark Holland 2009-11-23 20:46:13

That would probably work but the idea is not to have any code in the code-behind. Ideally I'd like the aspx page to call the common function directly.

Anthony 2009-11-25 11:08:42

Answer 4

A:

I typically create a class for shared/static functions in my websites. This class can then be called from any page in the site and allows the code to be seperated from your UI or presentation code.

clsGlobal.cs

namespace testClass
{
    public class clsGlobal
        {
        public static int EvalNumber(int value){
            int localInt = 5;

            return localInt + value;
        }
    }
}

Default.aspx Option 1

This version imports the namespace of the global class into the aspx page so you can reference your static functions without using the namespace. "clsGlobal.EvelMethod()"

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="testClass._Default" %>
<%@ Import Namespace="testClass" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Static Class Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <%= clsGlobal.EvalNumber(5).ToString() %>
    </div>
    </form>
</body>
</html>

Default.aspx Option 2

This version calls the static function using the fully qualified function name including the namespace. "testClass.clsGlobal.EvalNumber()"

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="testClass._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Static Class Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <%= testClass.clsGlobal.EvalNumber(5).ToString() %>
    </div>
    </form>
</body>
</html>

Tinidian 2009-11-23 13:12:49

Can you give an example of how you call one static function of your class directly from the aspx page?

Anthony 2009-11-23 20:47:18

Updated code example above to show example.

Tinidian 2009-11-24 11:30:11

Thanks. Very useful. I hadn't realised it was possible to do this.

Anthony 2009-11-24 17:08:02

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asp.net In a repeater is it possible to call a public function from another class?

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