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How can i get rid of asp:Menu flickering?

Posted on 2014-12-06
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Last Modified: 2014-12-22
I'm using ASP.net/C# with Visual Studio 2008. When any postback happens and the page gets rendered again the menu "flickers" for a moment and all  menu items are shown before a return to the normal display. I've found some suggestions, but nothing has worked so far.
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Question by:dodgerfan
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4 Comments
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 40485606
this is the trick I read in some places (I presume you are using Master Pages?)
The flickering is because asp:Menu uses javascript to set some inline styles.

hence, set your css file:
#menu ul li ul
{
    display: none;
}

#menu ul li 
{
    position: relative; 
    float: left;
    list-style: none;
}

Open in new window


and the flickering should be gone.
the trick is that the display will be "none" by default (while building the menu) and then showing only what is needed when done, and not building "all visible" and then hiding what is not needed
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Author Comment

by:dodgerfan
ID: 40485676
I am using a Master page. I did find that code and tried it, but the flicker still occurs. My style sheet is attached. Could I have something else in there messing with it?Site.css
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LVL 143

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 2000 total points
ID: 40488286
I found some contradictory information in some documents... some write that #menu should do, other places I find that .menu should do:
.menu ul li ul
{
    display: none;
}

.menu ul li 
{
    position: relative; 
    float: left;
    list-style: none;
}    

Open in new window

0
 

Author Comment

by:dodgerfan
ID: 40498136
This did not work, either. I'm still trying to figure it out but looking at different ways to render a menu, too.
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