Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Why does update panel not working.

Posted on 2014-02-05
3
172 Views
Last Modified: 2014-02-24
The page is getting post backed. What is wrong here.

 <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true">
            </asp:ScriptManager>
            <asp:UpdatePanel ID="upBlock" runat="server" UpdateMode="Conditional">
                <ContentTemplate>
                    <table width="805" border="0" cellspacing="3" class="main_table_report">
                        <tr>
                            <td class="report_color td_style">
                                University
                            </td>
                            <td class="report_color td_style">
                                <asp:DropDownList ID="ddluniversity" runat="server" CssClass="report_color" Width="200"
                                    AutoPostBack="True" OnSelectedIndexChanged="ddluniversity_SelectedIndexChanged">
                                </asp:DropDownList>
                            </td>
                            <td class="report_color td_style">
                                Course/Branch
                            </td>
                            <td class="report_color td_style">
                                <asp:DropDownList ID="ddlcourses" runat="server" CssClass="report_color" Width="200"
                                    AutoPostBack="True" OnSelectedIndexChanged="ddlcourses_SelectedIndexChanged">
                                </asp:DropDownList>
                            </td>
                        </tr>
                        <tr>
                            <td class="report_color td_style">
                                Semester
                            </td>
                            <td class="report_color td_style">
                                <asp:DropDownList ID="ddlsemester" runat="server" CssClass="report_color" Width="200"
                                    AutoPostBack="True" OnSelectedIndexChanged="ddlsemester_SelectedIndexChanged">
                                </asp:DropDownList>
                            </td>
                            <td class="report_color td_style">
                                Section
                            </td>
                            <td class="report_color td_style">
                                <asp:DropDownList ID="ddlsection" runat="server" CssClass="report_color" Width="200"
                                    AutoPostBack="True" OnSelectedIndexChanged="ddlsection_SelectedIndexChanged">
                                </asp:DropDownList>
                            </td>
                        </tr>
                        <tr>
                            <td class="report_color td_style">
                                Subject
                            </td>
                        
                        </tr>
                        <tr>
                            <td class="report_color td_style" colspan="2">
                                Student's Name (Optional)
                            </td>
                            <td class="report_color td_style" colspan="2">
                                <asp:TextBox ID="txtname" runat="server" Width="200px" CssClass="txt_1"></asp:TextBox>
                            </td>
                        </tr>
                    </table>
                </ContentTemplate>
                <Triggers>
                    <asp:AsyncPostBackTrigger ControlID="ddluniversity" EventName="SelectedIndexChanged"/>
                </Triggers>
            </asp:UpdatePanel>

Open in new window

0
Comment
Question by:searchsanjaysharma
3 Comments
 
LVL 29

Accepted Solution

by:
Paul Jackson earned 250 total points
ID: 39840439
Please explain how you want the page to update when the updatepanel trigger is triggered, what fields should update etc.
The first thing that is apparent is that you have all of the content within the updatepanel so all of the content will be updated as everything within the updatepanel gets updated when the trigger is executed.
You also have the AutoPostBack attribute of your dropdown listboxes set to true which will also be causing the full postback you are seeing.
You should set AutoPostBack = false for you dropdown list boxes.
0
 
LVL 10

Assisted Solution

by:Monica P
Monica P earned 250 total points
ID: 39852855
Check you have placed this code in you web config file

<xhtmlConformance mode="Legacy"/>
0
 

Author Closing Comment

by:searchsanjaysharma
ID: 39882304
tx
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction Hi all and welcome to my first article on Experts Exchange. A while ago, someone asked me if i could do some tutorials on object oriented programming. I decided to do them on C#. Now you may ask me, why's that? Well, one of the re…
This article aims to explain the working of CircularLogArchiver. This tool was designed to solve the buildup of log file in cases where systems do not support circular logging or where circular logging is not enabled
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…

791 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question