I created a dynamic button and want to add the button click event as update panel trigger.
But does not work. Any idea ?
Thanks
String clientID;
protectedvoid Page_Init(object sender,EventArgs e)
{
Button btn =newButton();
btn.Text ="Write Hello";
btn.Click +=newEventHandler(Button1_Click);
Page.Form.Controls.Add(btn);
clientID = btn.ClientID;
}
protectedvoid Button1_Click(object sender,EventArgs e)
{
Label1.Text ="hello";
}
protectedvoid Page_PreRender(object sender,EventArgs e)
{
AsyncPostBackTrigger trigger =newAsyncPostBackTrigger();
trigger.ControlID = clientID;
trigger.EventName ="Click";
UpdatePanel1.Triggers.Add(trigger);
}
Try this instead of your code.
protected void Page_Load(object sender, EventArgs e)
{
Button btn = new Button();
btn.Text = "Write Hello";
btn.ID = "Button1";
btn.Click += new EventHandler(Button1_Click);
UpdatePanel1.ContentTemplateContainer.Controls.Add(btn);
//Page.Form.Controls.Add(btn);
// clientID = btn.ClientID;
AsyncPostBackTrigger trigger = new AsyncPostBackTrigger();
trigger.ControlID = "Button1";
trigger.EventName = "Click";
UpdatePanel1.Triggers.Add(trigger);
}
protected void Button1_Click(object sender, EventArgs e)
{
Label1.Text = "hello";
}
This works. But actually what I want is : when click on the Button1, the the UpdatePanel1 will be hide and a UpdateProgress (with a loading image) will show until the loading complete. And the UpdatePanel1 will show again with some updated info.
Try this code. I dont think its a perfect way. I am using some hack mentioned in
http://dotnetslackers.com/community/blogs/simoneb/archive/2006/09/02/481.aspx
<%@. Page Language="C#" %
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
Button btn = new Button();
btn.Text = "Write Hello";
btn.ID = "Button1";
btn.Click += new EventHandler(Button1_Click);
UpdatePanel1.ContentTemplateContainer.Controls.Add(btn);
//Page.Form.Controls.Add(btn);
// clientID = btn.ClientID;
AsyncPostBackTrigger trigger = new AsyncPostBackTrigger();
trigger.ControlID = "Button1";
trigger.EventName = "Click";
UpdatePanel1.Triggers.Add(trigger);
}
protected void Button1_Click(object sender, EventArgs e)
{
Label1.Text = "hello";
System.Threading.Thread.Sleep(4000);
}
</script
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID=sc1 runat=server ScriptPath="ScriptLibrary"></asp:ScriptManager>
<div>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Label ID="Label1" runat="server"Text="Label"></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdateProgressrunat=server AssociatedUpdatePanelID=Updatepanel1 ID=up1DynamicLayout=true DisplayAfter=4 >
<ProgressTemplate>
<table>
<tr>
<td>
Loading......
</td>
</tr>
<tr>
<td>
<img src="http://pics.10026.com/?src=" alt="image" />
</td>
</tr>
</table>
</ProgressTemplate>
</asp:UpdateProgress>
</div>
</form>
</body>
</html>
<script language=javascript>
Sys.Application.add_load(ApplicationLoadHandler)
function ApplicationLoadHandler(sender, args)
{
Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(HidePanel);
Sys.WebForms.PageRequestManager.getInstance().add_pageLoading(ShowPanel);
}
function HidePanel(sender, args)
{
for (var j = sender._updatePanelIDs.length - 1; j >= 0; j--)
{
varupdatePanel =document.getElementById(sender._uniqueIDToClientID(sender._updatePanelIDs[j]));
var postbackElement = args.get_postBackElement();
if(updatePanel && updatePanel.contains(postbackElement)) {
updatePanel.style.visibility='hidden';
}
}
}
function ShowPanel(sender, args)
{
var updatedPanels = args.get_panelsUpdating();
for (var j = updatedPanels.length - 1; j >= 0; j--)
{
updatedPanels[j].style.visibility='visible';
}
}
</script>
Is it posible to put the button outside the UpdatePanel ?
UpdatePanel1.ContentTemplateContainer.Controls.Add(btn);
Because I would not want the button to be hide while 'Ajax'.
Thanks
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