how postback trigger and asynchronous postback trigger works in the code
When i clicked on click button,both time changed.ie. Page Generated @ 11:23:00 AM Internal @ 11:23:00 AM when i clicked on async button,one time changed ie. Asych click @ 11:25:45 AM what is exactly happening.. I am just confused with the Page load. in both the cases,postbacktrigger and asyncpostbacktrigger.Is it loading the whole page?
i am referring the below code:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<div>
Page Generated @
<asp:Label runat="server" ID="uiPageTime" />
<p />
<asp:UpdatePanel runat="server" ID="update" UpdateMode="Conditional">
<ContentTemplate>
<asp:Label runat="server" ID="uiTime" />
<asp:Button runat="server" ID="uiInternalButton" Text="Click" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="uiAsynch" EventName="click" />
<asp:PostBackTrigger ControlID="uiInternalButton" />
</Triggers>
</asp:UpdatePanel>
<asp:Button runat="server" ID="uiPostback" Text="Click" />
<asp:Button runat="server" ID="uiAsynch" Text="Asynch" />
</div>
</form>
</body>
</html>
public partial class _Default : System.Web.UI.Page
{
protected void Page_Init(object sender, EventArgs e)
{
uiAsynch.Click += uiAsynch_Click; uiPostback.Click += uiPostback_Click;
uiInternalButton.Click += uiInternalButton_Click;
}
protected void Page_Load(object sender, EventArgs e)
{
uiPageTime.Text = DateTime.Now.ToLongTimeString();
if (!IsPostBack)
{
uiTime.Text = DateTime.Now.ToLongTimeString();
}
}
private void uiInternalButton_Click(object sender, EventArgs e)//postbacktriger
{
uiTime.Text = "Internal @ " + DateTime.Now.ToLongTimeString();
}
private void uiPostback_Click(object sender, EventArgs e)
{
uiTime.Text = "Postback click @ " + DateTime.Now.ToLongTimeString();
update.Update();
}
private void uiAsynch_Click(object sender, EventArgs e)//asynchronuspostbacktrigger
{
uiTime.Text = "Asych click @ " + DateTime.Now.ToLongTimeString();
update.Update();
}
}