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[Solved] Disable dropdown using JS has different disabled color then disabling from server side

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ComboBox

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

Rizwan asked on 16 Apr 2009, 11:23 AM

Hi
   I have a problem with disabled dropdown color. If I disable the dropdown from server side using Office2007 Skin then color goes gray which is good but if I disable the control using javascript then color stay white. I cannot change the skin as my entire application is configured to use that color scheme so I have not tested it on other skins but overall the color should go gray either we disable it using Server Side code or JS code.

The other problem is I am unable to find the Dropdown in JS using
document.getElementById or $find or $get
one of them returns object and others null, the object one gives error that this is not its property.

Now I have attached the OnClientLoad event and either stores the object in global js variable or doing initial settings there.
I have tried different options posted on telerik forum to find dropdown but all invain.

I would like to upload the mini project with problems but could not find any upload option here. Please paste this code and test it at your end.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>

</head>
<body>
    <form id="form1" runat="server">
           <asp:ScriptManager runat="server" ID="smTest"></asp:ScriptManager>

    <div>
        <p>Disabled color from Server side</p><telerik:RadComboBox ID="RadComboBox1" runat="server" >
        <Items>
            <telerik:RadComboBoxItem Text="This is disabled from Server end" />
            <telerik:RadComboBoxItem Text="Another text 1" />
        </Items>
        </telerik:RadComboBox>

        <p>Disabled from Client Side</p><telerik:RadComboBox ID="RadComboBox2" runat="server" OnClientLoad="ClientLoad">
        <Items>
            <telerik:RadComboBoxItem Text="Disable from Client Side" />
            <telerik:RadComboBoxItem Text="Another text" />
        </Items>
        </telerik:RadComboBox>
        <input type="button" onclick="return disableClientControl()" value="why Cant I get the dropdown" />
    </div>
     <script language="javascript" type="text/javascript">
         var ddl1;
         function ClientLoad(sender, args) {
             ddl1 = sender;
             ddl1.set_enabled(false);
         }
         function disableClientControl() {
             var ddl = document.getElementById("RadComboBox2")
             alert("next line will give JS error")
             ddl.set_enabled(false);
         }

    </script>
    </form>

</body>
</html>
-------------
SERVER SIDE CODE
------------

protected void Page_Load(object sender, EventArgs e)
    {
        RadComboBox1.Enabled = false;
    }

1 Answer, 1 is accepted

answered on 20 Apr 2009, 12:55 PM

radcomboboxenabledisable.zip

Hi Rizwan,

Please refer to the attached website to find a live version of the answers to your problems.

1. disabling the combo on the client should be done through comboObject.disable();
2. getting the object to it works through the $find function. getElementById == $get - they get DOM elements. $find gets the client object.

Regards,
Alex
the Telerik team

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