Solved

Asp.net refresh DropDownList

Posted on 2010-09-02
5
768 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
  • 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

Do You Know the 4 Main Threat Actor Types?

Do you know the main threat actor types? Most attackers fall into one of four categories, each with their own favored tactics, techniques, and procedures.

Join & Write a Comment

It’s quite interesting for me as I worked with Excel using vb.net for some time. Here are some topics which I know want to share with others whom this might help. First of all if you are working with Excel then you need to Download the Following …
Introduction This article shows how to use the open source plupload control to upload multiple images. The images are resized on the client side before uploading and the upload is done in chunks. Background I had to provide a way for user…
When you create an app prototype with Adobe XD, you can insert system screens -- sharing or Control Center, for example -- with just a few clicks. This video shows you how. You can take the full course on Experts Exchange at http://bit.ly/XDcourse.
This video explains how to create simple products associated to Magento configurable product and offers fast way of their generation with Store Manager for Magento tool.

707 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

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now