• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 158
  • Last Modified:

!!ASP.NET ListBoxs appearing on top of Panels!!

Guys,

I am currenly building a page that displays a summary of information in a panel over the top of a page that has listboxs on it.  As is typical with DropDownLists, they appear ontop of the panel.  Is there any way to stop this?  This problem has come up before and i desperately require a solution.  

Thanks guys,

Neil
0
SlammingRumJoseph
Asked:
SlammingRumJoseph
  • 3
  • 2
  • 2
  • +1
3 Solutions
 
AerosSagaCommented:
have you tried setting the listbox to visible = false?

Regards,

Aeros
0
 
AerosSagaCommented:
example:

Me.MyDropDownList.Visible = False

0
 
SlammingRumJosephAuthor Commented:
i have thought of that but i was hoping to avoid that solutions if possible.
0
Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

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

 
hamoodCommented:
althought situation is not clear but i think you have to add tables in the code for adjusting dropdown list posistions

here is sample code

<TABLE id="Table1" style="Z-INDEX: 101; LEFT: 16px; WIDTH: 424px; POSITION: absolute; TOP: 8px; HEIGHT: 27px"
                        cellSpacing="1" cellPadding="1" width="424" border="1">
<TR>
<TD>
<asp:DropDownList id="DropDownList1" runat="server"></asp:DropDownList></TD>
<TD>
<asp:DropDownList id="DropDownList2" runat="server"></asp:DropDownList></TD>
<TD>
<asp:DropDownList id="DropDownList3" runat="server"></asp:DropDownList></TD>
</TR>
</TABLE>

hamood
0
 
shovavnikCommented:
There is no way to avoid that behavior for dropdownlists.  dd lists are actually parsed differently by the browser than all other controls because of their unique behavior.  The only solutions you have are:

1. Hide you dropdownlists when they get in the way.  Don't hide them on the server-side; use client side javascript to hide them:

document.all.mydropdownlist.style.display = 'none';

2. Create your own dropdownlists using dhtml and javascript, but not real dropdownlists.

<div id="mydropdownlist">
  <table>
  <tr id="row1" onclick="doDropDownAction(1)"><td>First List Item</td></tr>
  </table>
</div>

and javascript:
function doDropDownAction(rowIndex) {
  alert( rowIndex );
}

A similar solution can be made with server-side controls if you need to be able to bind to the control.  You can also bind your table to an xml data island that can contain a list of commands if you need a dynamic client-side dropdownlist.
0
 
hamoodCommented:
On thing that i would like to mention here is that dd lists, activex controls and applets have Z-order higher than all controls. so they will always render on the top of other controls.
In our applciation we have some menus and when user is selecting any item from menu and page under this menu has some dd list this dd list appears on top of menu.
One solution that we are using here is hiding the drop down list in the page when user is selecting any item from menu and any dd list is there on the page. It will hide only those dd list which are causing problems.

Here is the javascript code that we are using to hide the dd list
set the id of <td> having any drop down list to "drop" and call the function makeTheImageLayers(3) on load event of the body tag. Count number of ddlists and pass this number to makeTheImageLayers function.

var Temp = new Array();
      var count=0;
      var nDrops=0; // it will contain the total number of drop downs
      var Dhtml_frm;
      var D_htmlTable = new Array();
      var D_htmlTextBox = new Array();
      var hiddenCombos =  new Array();
      var hc_Count=0;

//call this function in the <bodg> under the onload event
      function makeTheImageLayers(nD)
      {
            //setting out the references
            Dhtml_frm = document.forms[0];
            imgHiddenCombos();
            //alert(Dhtml_frm)
            var styleWidth = 155;
            nDrops=nD;
            var i=0;
            for(i=0; i<nD; i++)
            {
                  var D_html="";
                  D_html = "<TABLE id='D_htmlTable_nf' cellSpacing='0' cellPadding='0' width='300' border='0' style='WIDTH:" + styleWidth + "px;height:22px;display:none'>"
                  D_html = D_html + "<TR>"
                  D_html = D_html + "<TD style='WIDTH:" + (styleWidth-16) + "px;height:22px;'><input type='text' id='D_htmlTextBox_nf' style='width:" + (styleWidth-16) + "px;height:22px;BORDER-RIGHT-STYLE: none;PADDING-LEFT: 3px;' name='t' value=''></TD>"
                  D_html = D_html + "<TD style='WIDTH:16px';height:22px;><IMG alt='' src='../images/arrow.gif'></TD>"
                  //D_html = D_html + "<TD style='WIDTH:16px;height:22px;'><input type=Button value='&#9660;' name=bbb style='WIDTH:16px;height:21px;font-size:7pt;BORDER-RIGHT: thin outset; BORDER-TOP: groove; BORDER-BOTTOM: thin outset; BORDER-LEFT-STYLE: none;'></TD>"
                  D_html = D_html + "</TR>"
                  D_html = D_html + "</TABLE>"
                  if (nD < 2)
                        Drop.innerHTML = Drop.innerHTML + D_html;
                  else
                        Drop[i].innerHTML = Drop[i].innerHTML + D_html;

                  if(i < 1){
                        D_htmlTable[i]=D_htmlTable_nf
                        D_htmlTextBox[i] = Dhtml_frm.D_htmlTextBox_nf
                  }
                  else{
                        D_htmlTable[i]=D_htmlTable_nf[i];
                        D_htmlTextBox[i] = Dhtml_frm.D_htmlTextBox_nf[i];
                  }
            }
      }



      
      function searchHiddenCombos(cmbName)
      {
            var hi=0;
            for(hi=0; hi<hc_Count; hi++)
            {
                  if ( hiddenCombos[hi] == cmbName )
                  {
                        //alert(hiddenCombos[hi])
                        return true;
                  }
            }
            return false;
      }
      function imgHiddenCombos()      
      {
            var ci=0;
            hc_Count = 0;
            for(ci=0; ci<Dhtml_frm.length; ci++)
            {      
                  if (Dhtml_frm.elements[ci].style.display == "none" || Dhtml_frm.elements[ci].style.visibility == "hidden")
                  {
//                        if(hc_bit==false)
//                        {
                              hiddenCombos[hc_Count] = Dhtml_frm.elements[ci].name;
                              //alert(hiddenCombos[hc_Count])
                              hc_Count++;
//                        }
                  }
            }
      }


Let me know if i could solve your problem

Hamood
0
 
shovavnikCommented:
Solutions have been offered and the user hasn't responded.  I recommend splitting the points.
0
 
AerosSagaCommented:
I concur...Aeros
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Cloud Class® Course: Certified Penetration Testing

This CPTE Certified Penetration Testing Engineer course covers everything you need to know about becoming a Certified Penetration Testing Engineer. Career Path: Professional roles include Ethical Hackers, Security Consultants, System Administrators, and Chief Security Officers.

  • 3
  • 2
  • 2
  • +1
Tackle projects and never again get stuck behind a technical roadblock.
Join Now