Div is not showing inside update panel even after making visible through server side coed

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My div is not showing aftr certain events. I made it runat server and set its visibility true or false using its ID on server side but its not happening.
At runtime in view source this DIV shown as visibility:none
any suggestion would be helpful.

ASPX code

XML

<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
                   <ContentTemplate>
                       <div id="calc_rebuild_cost" runat="server">
                           <vam:ImageButton ID="btnRebuildCalc" runat="server" CssClass="LeftPaddedButton" AlternateText="Calculate Rebuild Cost"
                               ImageUrl="~/img/Images/calc_rebuild_cost.png" OnClick="btnRebuildCalc_Click" />
                       </div>
                   </ContentTemplate>
                   <Triggers>
                       <asp:AsyncPostBackTrigger ControlID="btnRebuildCalc" EventName="Click" />
                   </Triggers>
               </asp:UpdatePanel>

Code behind:

C#

if (!rebuild_cost.Visible)
           {
               //display the calculate button
               calc_rebuild_cost.Visible = true;
               //calc_rebuild_cost.Style.Add("display", "block");
           }
           else
           {   calc_rebuild_cost.Visible =false ;
           // calc_rebuild_cost.Style.Add("display", "none");
        }

Posted 15-Jan-14 1:20am

chandrayog.2

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Comments

Deviprasad Das 15-Jan-14 7:24am

You did a browser view source?

chandrayog.2 15-Jan-14 7:38am

sorry i mean browser debug on chrome.

Karthik_Mahalingam 15-Jan-14 7:30am

not clear, during on load is it visible ??

chandrayog.2 15-Jan-14 7:36am

actually on load it is not visible but after certain conditions it should be visible but that is not happening

Karthik_Mahalingam 15-Jan-14 7:41am

debug and check the condition..
some where it is wrong..
post your full code..

Deviprasad Das 15-Jan-14 7:49am

If it is browser visibility: hidden, then you need to check js code.
Somewhere it is adding the visiblility css property.

pooja keshri 16-Jan-14 2:02am

Post you full code.

3 solutions

Solution 2

Hello,
I think you have to use update() method of UpdatePanel after you change the visibility of your div.
http://msdn.microsoft.com/fr-fr/library/system.web.ui.updatepanel.update.aspx[^]

Posted 15-Jan-14 2:31am

Ahmed Bensaid

Solution 3

we can not use html control id in code behind instead of div use panel which is server side control

Posted 15-Jan-14 5:43am

Vinay Jade

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ZurdoDev · Accepted Answer · 2014-01-15T02:28:00

Server side .Visible is not the same as the client side visibilty attribute. When you set .Visible =false on the server side the control is not even sent to the client at all, it won't even be in the HTML.

To set the client side visibilty property from server side you can do like this:

C#

txt1.Style[HtmlTextWriterStyle.Visibility] = value;