event

  • Thread starter Thread starter Tony Johansson
  • Start date Start date
T

Tony Johansson

Hello!

If you have this simple code in the code behind file.
I just wonder if you ever use this type of coding that is used in win forms
?
helpButton.Click += new System.EventHandler(Button1_Click);

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
helpButton.Text = "HELP";
helpButton.BackColor = Color.LightCoral;

}
protected void Button1_Click(object sender, EventArgs e)
{
helpButton.Text = "You have hit me";
}
}

//Tony
 
If you have this simple code in the code behind file.
I just wonder if you ever use this type of coding that is used in win
forms ?
Click to expand...

yes, but you generally don't realize it, as the designer (.NET 2.0 or
greater) hides the wiring. It is less hidden in VB than C#. But, yes, the
event handlers are wired using delegates, just like win forms.

Peace and Grace,

--
Gregory A. Beamer (MVP)

Twitter: @gbworld
Blog: http://gregorybeamer.spaces.live.com

*******************************************
| Think outside the box! |
*******************************************
 
Gregory A. Beamer said:
yes, but you generally don't realize it, as the designer (.NET 2.0 or
greater) hides the wiring. It is less hidden in VB than C#. But, yes, the
event handlers are wired using delegates, just like win forms.

Peace and Grace,

--
Gregory A. Beamer (MVP)

Twitter: @gbworld
Blog: http://gregorybeamer.spaces.live.com

*******************************************
| Think outside the box! |
*******************************************
Click to expand...

Do you mean that this part
OnClick="Button1_Click"
of the code in default.aspx that can be seen below
is more or less substituting this construction
helpButton.Click += new System.EventHandler(Button1_Click);

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

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

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="helpButton" runat="server" OnClick="Button1_Click"
Style="z-index: 100;
left: 121px; position: absolute; top: 135px" Text="Button" />
</div>
</form>
</body>
</html>

//Tony
 
Do you mean that this part
OnClick="Button1_Click"
of the code in default.aspx that can be seen below
is more or less substituting this construction
helpButton.Click += new System.EventHandler(Button1_Click);
Click to expand...

Yes, and in some instances you can use the actual delegate call, as in the
Windows forms. In fact, if you go back to Framework 1.x, you find:

helpButton.Click += new System.EventHandler(helpButton_Click);

Run Reflector over the compiled website assemblies and you should see this
(will have to check how it does it now, but I am almost 100% confident you
will see the delegate wired up in the compiled code).

Peace and Grace,

--
Gregory A. Beamer (MVP)

Twitter: @gbworld
Blog: http://gregorybeamer.spaces.live.com

*******************************************
| Think outside the box! |
*******************************************
 

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