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[Solved] Items still disabled after calling enable()

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ComboBox

This is a migrated thread and some comments may be shown as answers.

Ian Mac asked on 28 Apr 2009, 02:57 PM

I have a multiselect RadComboBox with a checkbox in the itemtemplate. The control is initially disabled but when I enable it the items stay disabled. Here is the code:-

function toggleFPs(chk)

{

var combo = $find("<%= cmbFPs.ClientID %>");

if (chk.checked)

combo.disable();

else

combo.enable();

}

...

<telerik:RadComboBox ID="cmbFPs" runat="server" Height="160px" Width="185px"

Enabled="false" HighlightTemplatedItems="true"

DataTextField="Username" DataValueField="UserID"

OnClientLoad="selChange"

OnClientSelectedIndexChanged="selChange"

EmptyMessage="Choose Finance partners">

<asp:CheckBox runat="server" ID="CheckBox" DataValueField="UserID" onclick="event.cancelBubble=true;" Text="" />

<%# Eval( "UserName") %>

</ItemTemplate>

</telerik:RadComboBox>

<asp:CheckBox ID="chkAllFPs" runat="server" Text=" All " Checked="true"

onclick="toggleFPs(this)" />

...

How do I enable the checkbox in the items?

I also tried this and still couldnt check the boxes...

var items = combo.get_items();

for (var i = 0; i < items.get_count(); i++)

items.getItem(i).enable();

I am using ASP.NET Ajax Q2 2008.

Thanks.

6 Answers, 1 is accepted

answered on 04 May 2009, 09:07 AM

Ditto here. I ran into something similar today...

I disable the CB in JS and enable it via code-behind. When enabled, only InputArea changes style but ALL items remain dimmed and unselectable!

JS:
...
catCombo = $find("<%= rcb_CodeCat.ClientID %>");
var codeCat = catCombo.findItemByValue("some value");
catCombo.trackChanges();
catCombo.enable(); // MUST do in order to facilitate item selection
codeCat.select();
catCombo.disable();
catCombo.commitChanges();
...

VB.NET
...
rcb_CodeCat.Enabled = True
rcb_CodeCat.EnableTextSelection = True
...

Something else I noticed:
If CB is disabled, I cannot alter item selection, whether clearing current selection or setting another item as selected. Must enable it first as can be seen in the JS snippet above.

Am I missing something here?

Regards,

answered on 07 May 2009, 01:12 PM

Solved it by explicitly enabling each checkbox AND the parent SPAN, by changing to the following routine:-

                            function toggleFPs(chk)         
                    {         
                        var combo = $find("<%= cmbFPs.ClientID %>");         
                        if (chk.checked)         
                            combo.disable();         
                        else         
                            combo.enable();         
                     
                        // Enable items         
                        var chkboxId, chkbox;         
                        var items = combo.get_items();         
                        for (var i = 0; i < items.get_count(); i++)          
                        {         
                            items.getItem(i).enable();         
                     
                            chkboxId = "<%= cmbFPs.ClientID %>" + "_i" + i + "_CheckBox";         
                            chkbox = document.getElementById( chkboxId);         
                     
                            chkbox.disabled = false;         
                            chkbox.parentNode.disabled = false;         
                        }         
                    }         
            
                    