Solved

Asp.net refresh DropDownList

Posted on 2010-09-02
5
774 Views
Last Modified: 2012-05-10
I have an Asp.net page with several DropDownLists.
When the user selects an item from the list, it redirects him to another page.
If the user clicks the browser's back button, the item is still selected in the DropDownList.
How do I make it so that when he goes back to that page, the DropDownList is reset?
0
Comment
Question by:Rick
[X]
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
  • 3
  • 2
5 Comments
 
LVL 7

Expert Comment

by:urir10
ID: 33591617
try to add that to your aspx page that has the drop down on it:

<meta http-equiv="expires" content="-1">
0
 
LVL 13

Author Comment

by:Rick
ID: 33596355

Where?

 


<%@ Page Title="" Language="VB" MasterPageFile="~/MasterPage2.master" AutoEventWireup="false" CodeFile="MainPage.aspx.vb" Inherits="_Default" %> 
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder2" Runat="Server"> 

<table align="center" cellspacing="10" class="style33"> 
<tr> 
<td class="style35"> 
<asp:Image ID="imgCreation" runat="server" ImageAlign="AbsMiddle" 
ImageUrl="~/img/Icons/address-book-2.png" ToolTip="Creation" /> 
&nbsp; Creation</td> 
<td class="style37"> 
<asp:Image ID="imgMaintenance" runat="server" ImageAlign="AbsMiddle" 
ImageUrl="~/img/Icons/under-construction.png" ToolTip="Maintenance" /> 
&nbsp; Maintenance</td> 
</tr> 
<tr> 
<td class="style34"> 
<asp:DropDownList ID="drpCreation" runat="server" AutoPostBack="True" 
Width="450px"> 
</asp:DropDownList> 
</td> 
<td> 
<asp:DropDownList ID="drpMaintenance" runat="server" Width="450px"> 
</asp:DropDownList> 
</td> 
</tr> 
</table> 
<br /> 
<table align="center" cellspacing="10" class="style33"> 
<tr> 
<td class="style35"> 
<asp:Image ID="imgFunding" runat="server" ImageAlign="AbsMiddle" 
ImageUrl="~/img/Icons/calc.png" ToolTip="Funding" /> 
&nbsp; Funding</td> 
<td class="style37"> 
<asp:Image ID="mgDistribution" runat="server" ImageAlign="AbsMiddle" 
ImageUrl="~/img/Icons/anchor.png" ToolTip="Distribution" /> 
&nbsp; Distribution</td> 
</tr> 
<tr> 
<td class="style34"> 
<asp:DropDownList ID="drpFunding" runat="server" Width="450px"> 
</asp:DropDownList> 
</td> 
<td> 
<asp:DropDownList ID="drpDistribution" runat="server" Width="450px"> 
</asp:DropDownList> 
</td> 
</tr> 
</table> 
<br /> 
<br /> 
<table align="center" cellspacing="10" class="style33"> 
<tr> 
<td class="style35"> 
<asp:Image ID="imgInventory" runat="server" ImageAlign="AbsMiddle" 
ImageUrl="~/img/Icons/adress-book.png" ToolTip="Inventory" /> 
&nbsp; Inventory</td> 
<td class="style37"> 
<asp:Image ID="imgReports" runat="server" ImageAlign="AbsMiddle" 
ImageUrl="~/img/Icons/folder-open.png" ToolTip="Reports" /> 
&nbsp; Reports</td> 
</tr> 
<tr> 
<td class="style34"> 
<asp:DropDownList ID="drpInventory" runat="server" Width="450px"> 
</asp:DropDownList> 
</td> 
<td> 
<asp:DropDownList ID="drpReports" runat="server" Width="450px"> 
</asp:DropDownList> 
</td> 
</tr> 
</table> 
<br /> 
<br /> 
<table align="center" cellspacing="10" class="style33"> 
<tr> 
<td class="style35"> 
<asp:Image ID="imgUtilities" runat="server" ImageAlign="AbsMiddle" 
ImageUrl="~/img/Icons/magnet.png" ToolTip="Utilities" /> 
&nbsp; Utilities</td> 
<td class="style37"> 
<asp:Image ID="imgEuJpReports" runat="server" ImageAlign="AbsMiddle" 
ImageUrl="~/img/Icons/folder-open.png" ToolTip="Eu and JP Reports" /> 
&nbsp; Eu and JP Reports</td> 
</tr> 
<tr> 
<td class="style34"> 
<asp:DropDownList ID="drpUtilities" runat="server" Width="450px"> 
</asp:DropDownList> 
</td> 
<td> 
<asp:DropDownList ID="drpEuJpReports" runat="server" Width="450px"> 
</asp:DropDownList> 
</td> 
</tr> 
</table> 
</asp:Content> 
<asp:Content ID="Content3" runat="server" contentplaceholderid="head"> 

<style type="text/css"> 
a {font-family:Arial;} 
a:link {text-decoration: none; color:blue;} 
a:visited {text-decoration: none; color:blue;} 
a:hover {text-decoration: none; color:black} 
a:active {color:black;text-decoration: none} 
.style5 
{ 
margin-left: 24px; 
font-weight: normal; 
} 
.style33 
{ 
width: 910px; 
} 
.style34 
{ 
width: 416px; 
} 
.style35 
{ 
width: 416px; 
font-weight: bold; 
font-family: Arial, Helvetica, sans-serif; 
color: #FFFFFF; 
font-size: large; 
text-align: left; 
background-color: #336699; 
} 
.style37 
{ 
font-family: Arial, Helvetica, sans-serif; 
font-weight: bold; 
color: #FFFFFF; 
font-size: large; 
text-align: left; 
background-color: #336699; 
} 
</style> 
</asp:Content> 
  

  
  
  
  
  

Open in new window

0
 
LVL 7

Expert Comment

by:urir10
ID: 33596369
just under the <%@ Page  tag and before the <asp:Content  tag
0
 
LVL 13

Accepted Solution

by:
Rick earned 0 total points
ID: 33596928
I tried that, but it gives me a "Content is not supported outside 'script' or 'asp:content' regions.
I also tried putting it here:

<asp:Content ID="Content3" runat="server" contentplaceholderid="head">

<meta http-equiv="expires" content="-1" />

<style type="text/css">
a {font-family:Arial;}
.....
 
... but it didn't work. No error messages. But it didn't work at run time.
 
Thanks,
Rick
0
 
LVL 13

Author Closing Comment

by:Rick
ID: 33621657
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone 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

IntroductionWhile developing web applications, a single page might contain many regions and each region might contain many number of controls with the capability to perform  postback. Many times you might need to perform some action on an ASP.NET po…
Parsing a CSV file is a task that we are confronted with regularly, and although there are a vast number of means to do this, as a newbie, the field can be confusing and the tools can seem complex. A simple solution to parsing a customized CSV fi…
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…

728 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