First time poster here. (waves)
Here is my problem: Dynamically created LinkButtons within an Updatepanel don't seem to fire their Commands.
I have a few LinkButtons that are dynamically created within an UpdatePanel based on the contents of a TextBox. Everything renders as it should, only when I click on one of the LinkButtons, nothing happens. When I Debug, it the function the LinkButtons refer to (trough Command) never fires up. I suspect that this has something to do with the fact that CommandEventHandler is never actually registered because of the partial update. Is this correct? What are my options in this situation?
hello.
can you show us the code?
This is the code that is being used to generate the buttons:
foreach (XmlNode rowin rows){ LinkButton klantLink =new LinkButton(); klantLink.Text = row["NAME"].InnerText +", " + row["FIRSTNAME"].InnerText; klantLink.CommandArgument = row["K_CONTACT"].InnerText; klantLink.Command +=new CommandEventHandler(gezochteKlant_Click); searchDiv.Controls.Add(klantLink); searchDiv.Controls.Add(new LiteralControl("<br />") );}
searchDiv.Visible = true;
searchPanel.Update();
And this is the location in the html where the content is added:<atlas:UpdatePanel ID="searchPanel" runat="server" Mode="Conditional"> <ContentTemplate> <div runat="server" id="searchDiv" visible="false"> </div> </ContentTemplate></atlas:UpdatePanel>
hello again.
question: where are you adding the controls, ie, in which event?
They are added trough the OnTextChanged of a textbox.
hello.
hum, not sure about what's happening.
i've built a small sample that adds a button during the load event and this works ok:
<%@. 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 override void OnLoad(EventArgs e)
{
base.OnLoad(e);
LinkButton klantLink = new LinkButton();
klantLink.Text = "hello";
klantLink.CommandArgument = "test";
klantLink.Command += new CommandEventHandler(gezochteKlant_Click);
searchDiv.Controls.Add(klantLink);
searchDiv.Controls.Add(new LiteralControl("<br />"));
}
void gezochteKlant_Click(object sender, EventArgs args)
{
txt.Text = DateTime.Now.ToString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<atlas:ScriptManager runat="server" ID="manager" EnablePartialRendering="true" />
<atlas:UpdatePanel runat="server" id="panel">
<ContentTemplate>
<div runat="server" id="searchDiv" />
<asp:TextBox runat="server" id="txt" />
</ContentTemplate>
</atlas:UpdatePanel>
<hr />
<%= DateTime.Now.ToString() %>
</div>
</form>
</body>
</html>
maybe the problem is that you're only creating the button during the textchanged event; a click will fire another postback, but you won't the buttons won't be created since the text didn't change and this will not fire your event.
Thanks for the reply. I think the problem is that I create the controls directly in the function linked to the ontextchanged event.
hello.
that's what i was trynig to say. since you add them on the textchanged event, you must also add them on future postbacks or else the button will not exist. so, what i suggest is adding some sort of flag that will let you add the buttons during the load event of a postback operation.
Hi,
I am very badly stuck up at something.
I am also dynamically loading my user control in the Update panel. My User Control act as a ModalPopUp Extender. So what i am doing is , on the click on the button on my page I am showing a Modal PopUp which is a User Control with some buttons and a grid. Which is being loaded on some values passed from the Page. So what I have done is I am adding Dynamically that user Control on the Click event of the button on my Page.But when I click any button my User Control , the event associated with that button does not get fired. It just unloades the usecontrol and event related to the buttons on the User control are getting fired.. Please help and look into this matter..
The Code:
protectedvoid btnAddContent_Click(object sender,EventArgs e){
//AddContent1 is my User Control with ProposalID and SectionID are the Properties.. Place Holder is on my Page where I am placing my control.
AddContent
AddContent1 = (AddContent)Page.LoadControl("AddContent.ascx");AddContent1.ProposalID = 44;
AddContent1.SectionID = 1;
PlaceHolderTest.Controls.Add(AddContent1);
Label lblAdd = (Label)(AddContent1.FindControl("lblAdd"));lblAdd.Text =
"Add Content";Label lblSecQues = (Label)(AddContent1.FindControl("lblSecQues"));lblSecQues.Text =
"Section:";mpeAddContent.Show();
}Thanks in Avance
Abhishek
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