Test Enviroment :

IE Version : IE8

IIS Version : 5.0

RadControls Version : RadControls for Asp.Net Q2 2007(ASP.Net 2.X)

Issue one :

If a page used controls in assembly named RadAjax.Net2, there will be some Javascript errors caused when loading these pages. Please see picture "err1.jpg";

If I remove these ajax controls from this page , there will be no Javascript error.

Issue two:

I can’t select a Item from RadComBox. And RadComBox will always only display the last item if I click the left mouse button. Please see picture "err1.2pg";

My question is :
Can "RadControls for Asp.Net Q2 2007" work on .NET 4.0? If yes, what I should do to fix above two issues? If not, what I shall do if I have to use .NET 4.0?
I tried Telerik.Web.UI_2012_1_411_Dev.msi on .NET 4.0. There are big differences between RadControls for Asp.Net Q2 2007 in coding. If I use  

 <AjaxSettings>
<telerik:AjaxSetting AjaxControlID="btnViewUpdate">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="RadScheduler1" LoadingPanelID="RadAjaxLoadingPanel1" />
<telerik:AjaxUpdatedControl ControlID="lblViewName" />
</UpdatedControls>
</telerik:AjaxSetting>
</AjaxSettings>

protected override void Page_Init(object sender, EventArgs e)
        {
            base.Page_Init(sender, e);
            Grid = new RadGrid(); // actually this is not RadGrid but descendant class I created
            Grid.Initialize(ZSheet, ForceLoad, DataSourceProvider, this); // create columns runtime
            ZSheetContainer.Controls.Add(Grid); 
            GridFilter.Initialize(ZSheet, Grid.ZTable.TableNameUser); 
            if (IsPostBack)
                GridFilter.ApplyFilter(); // create and apply filter expressions obtained from different source, see below
        }

public void ApplyFilter()
        {
            if (string.IsNullOrWhiteSpace(_hf.Value)) return;
            List<GridFilterItem> filterItems =
                new JavaScriptSerializer().Deserialize<List<GridFilterItem>>(_hf.Value);
            foreach (GridFilterItem item in filterItems)
            {
                ZSheetItem zitem = _table.Structure.FirstOrDefault(t => t.f_name == item.Condition.ColumnID);
                Type columnType = GetColumnType(zitem);
                Type filterExpressionType;
                Type[] types = new[] { columnType };
 
                switch (item.Condition.Operator)
                {
                    case GridKnownFunction.Contains:
                        filterExpressionType = typeof(RadFilterContainsFilterExpression);
                        break;
                    case GridKnownFunction.DoesNotContain:
                        filterExpressionType = typeof(RadFilterDoesNotContainFilterExpression);
                        break;
                    case GridKnownFunction.StartsWith:
                        filterExpressionType = typeof(RadFilterStartsWithFilterExpression);
                        break;
                    case GridKnownFunction.EndsWith:
                        filterExpressionType = typeof(RadFilterEndsWithFilterExpression);
                        break;
                    case GridKnownFunction.EqualTo:
                        filterExpressionType = typeof(RadFilterEqualToFilterExpression<>);
                        break;
                    case GridKnownFunction.NotEqualTo:
                        filterExpressionType = typeof(RadFilterNotEqualToFilterExpression<>);
                        break;
                    case GridKnownFunction.GreaterThan:
                        filterExpressionType = typeof(RadFilterGreaterThanFilterExpression<>);
                        break;
                    case GridKnownFunction.LessThan:
                        filterExpressionType = typeof(RadFilterLessThanFilterExpression<>);
                        break;
                    case GridKnownFunction.GreaterThanOrEqualTo:
                        filterExpressionType = typeof(RadFilterGreaterThanOrEqualToFilterExpression<>);
                        break;
                    case GridKnownFunction.LessThanOrEqualTo:
                        filterExpressionType = typeof(RadFilterLessThanOrEqualToFilterExpression<>);
                        break;
                    case GridKnownFunction.Between:
                        filterExpressionType = typeof(RadFilterBetweenFilterExpression<>);
                        types = new[] { columnType, columnType };
                        break;
                    case GridKnownFunction.NotBetween:
                        filterExpressionType = typeof(RadFilterNotBetweenFilterExpression<>);
                        types = new[] { columnType, columnType };
                        break;
                    case GridKnownFunction.IsEmpty:
                        filterExpressionType = typeof(RadFilterIsEmptyFilterExpression);
                        break;
                    case GridKnownFunction.NotIsEmpty:
                        filterExpressionType = typeof(RadFilterNotIsEmptyFilterExpression);
                        break;
                    case GridKnownFunction.IsNull:
                        filterExpressionType = typeof(RadFilterIsNullFilterExpression);
                        break;
                    case GridKnownFunction.NotIsNull:
                        filterExpressionType = typeof(RadFilterNotIsNullFilterExpression);
                        break;
                    default:
                        filterExpressionType = typeof(RadFilterEqualToFilterExpression<>);
                        break;
                }
 
                Type genericType = filterExpressionType.MakeGenericType(types);
                RadFilterExpression expression = (RadFilterExpression)Activator.CreateInstance(genericType, item.Condition.ColumnID);
                _filter.RootGroup.AddExpression(expression);
             }            
            _filter.FireApplyCommand();

}

I am using Radgrid  and  have the following situation.
First GroupBy is  Product and with in product it is grouped by City 

Eveything works fin about the total and also I am inserting the labels accordingly in the group footer.

I need to make my group footer more readble i.e it should say  NewYork City Total and Chicago City Total  in the inner group
and  it should say Product AA Total for outr group  rather that standard label

How do I access the groupby value from its Groupfooter.

Thanks for you help

asp:UpdatePanel id="pnluCompanyData" EnableViewState="true" runat="server" UpdateMode="Conditional"

RenderMode="Inline">

<contenttemplate>

<asp:PlaceHolder id="CtrlPlaceholder" EnableViewState="true" runat="server" ></asp:PlaceHolder>

telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" >

<AjaxSettings >

<telerik:AjaxSetting AjaxControlID="mvwDriver1" >

<UpdatedControls >

<telerik:AjaxUpdatedControl ControlID="divLoadingImageDriver" LoadingPanelID="RadAjaxLoadingPanel1" />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

<ClientEvents OnResponseEnd="Driver_ResponseEnd" OnRequestStart="ApplyFormCssClass(dDisablescreen)" />

telerik:RadAjaxManager>

<

telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" Height="75px"

Width="75px">

<img alt="Loading..." src='<%= RadAjaxLoadingPanel.GetWebResourceUrl(Page, "Telerik.Web.UI.Skins.Default.Ajax.loading.gif") %>'

style="border: 0px;" />

</

telerik:RadAjaxLoadingPanel>