getting radcombo id in javascript

[Ramakrishna]

Have a rad combobox in  rad grid.
the combobox has got checkboxes which i need to validate .

on the click of checkbox i need to get the id of rad combo.

getting error 'this control does not exist in the current context

[Princy]

Hello Ramakrishna,

In order to achieve this, access the RadComboBox and RadComboxItem(CheckBox placed in ItemTemplate) in Itemcreated event. Then attach 'onclick' client event to CheckBox by passing the RadComboBox's ClientID to the event handler. Check out the following code.
 
ASPX:

 <telerik:GridTemplateColumn>
    <ItemTemplate>
        <telerik:RadComboBox ID="RadComboBox1" runat="server">
            <Items>
                <telerik:RadComboBoxItem />
                <telerik:RadComboBoxItem />
                <telerik:RadComboBoxItem />
            </Items>
            <ItemTemplate>
                <asp:CheckBox ID="CheckBox1" runat="server" />
            </ItemTemplate>
        </telerik:RadComboBox>
    </ItemTemplate>
 </telerik:GridTemplateColumn>

C#:

 protected void dgCompanyData_ItemCreated(object sender, GridItemEventArgs e)
    {
        if (e.Item is GridDataItem)
        {
            GridDataItem item = (GridDataItem)e.Item;
            RadComboBox combo = (RadComboBox)item.FindControl("RadComboBox1");
            foreach (RadComboBoxItem comboItem in combo.Items)
            {
                CheckBox chk = (CheckBox)comboItem.FindControl("CheckBox1");
                chk.Attributes.Add("onclick", "Click(this,'" + combo.ClientID + "');");
            }
       }
    }

Java Script:

 <script language="javascript" type="text/javascript">
    function Click(chk, combo)
     {
        var comboBox = $find(combo);
     }
 </script>

Thanks,
Princy.