I placed a usercontrol inside an updatepanel.
The usercontrol has a placeholder, and to that placeholder I add imagebuttons and linkbuttons.
When the imagebuttons are clicked, a partial update of the page is done = GOOD
When an linkbutton is clicked, a full update of the page is done = BAD
(No javascript errors whatsoever).
Does asp.net ajax treat this two types of controls differently? Did I forget to do extra steps?
Regards,
Fizgig
Does anyone have a solution for this? I'm getting the same results with a <asp:LinkButton>. When I try with <asp:Button>, it works perfectly.
This works for me.
<formid="form1"runat="server"><asp:ScriptManagerID="ScriptManager1"runat="server"/><asp:UpdatePanelID="UpdatePanel1"runat="server"UpdateMode="Conditional"><ContentTemplate><asp:PlaceHolderID="PlaceHolder1"runat="server"><asp:ImageButtonID="ImageButton1"ImageUrl="Untitled-1.gif"runat="server"/><br/><br/><asp:LinkButtonID="LinkButton1"runat="server">LinkButton</asp:LinkButton><br/><br/></asp:PlaceHolder><asp:LabelID="lblTest"runat="server"Text="Label"></asp:Label></ContentTemplate></asp:UpdatePanel><div><asp:LabelID="lblTest2"runat="server"Text="Label"></asp:Label></div></form>Hi Fizgig,
I tried dynamic imageButton, it works fine.
See this:
using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partialclass Ajax_Default2 : System.Web.UI.Page{protected void Page_Load(object sender, EventArgs e) { LinkButton lb =new LinkButton();this.PlaceHolder1.Controls.Add(lb); lb.Text ="Linkbutton"; lb.ID ="lb1"; lb.Click +=new EventHandler(lb_Click); ImageButton ib =new ImageButton();this.PlaceHolder1.Controls.Add(ib); ib.ID ="ib1"; ib.ImageUrl ="~/images/add.gif"; ib.Click +=new ImageClickEventHandler(ib_Click); Label2.Text = DateTime.Now.ToString(); }void ib_Click(object sender, ImageClickEventArgs e) { Label1.Text ="ib1 clicked on " + DateTime.Now.ToString(); }void lb_Click(object sender, EventArgs e) { Label1.Text ="lb1 clicked on " + DateTime.Now.ToString(); }}
<asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <asp:PlaceHolder ID="PlaceHolder1" runat="server"></asp:PlaceHolder> <br /> <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label> </ContentTemplate> </asp:UpdatePanel> <asp:Label ID="Label2" runat="server" Text="Label"></asp:Label>
Maybe it's fixed in the current Ajax version. Thanx.
I am receiving the same error that was reported in the original post. In my case I have a link button and an image button and so I'm able to hack this together by setting the OnClientClick property of the LinkButton to <%# "document.getElementById('" + Thumbnail.ClientID + "').click();return false;" %> - which is not very elegant, but works fine. Hopefully later I'll have a chance to better isolate this issue - I've run into it a couple times, but am not sure what the variable is yet.
I found that you have to add a trigger for the link button, so here's what you have to add, where lb is my linkbutton, and upPanel is the update panel that contains the link button...
AsyncPostBackTrigger asbt = new AsyncPostBackTrigger();
asbt.ControlID = lb.ID;
asbt.EventName = "Click";
upPanel.Triggers.Add(asbt);
Good find. That makes sense - although it's peculiar that it works different for the LinkButton and ImageButton. Thanks for posting that.
Luis Abreu: