or
<telerik:RadGrid ID="RgStatusGrid" runat="server" AllowPaging="True" GridLines="None" AllowSorting="true" PageSize="50" OnNeedDataSource="RgStatusGrid_NeedDataSource" OnItemDataBound="OnItemDataBound" OnSortCommand="RgStatusGrid_SortCommand"> <MasterTableView AutoGenerateColumns="false"> <GroupByExpressions> <telerik:GridGroupByExpression> <SelectRegions> <telerik:GridGroupByRegion RegionName="StateName" HeaderText="State" SortOrder="Ascending" /> <telerik:GridGroupByRegion RegionName="CityName" HeaderText="City" SortOrder="Ascending" /> </SelectRegions> <GroupByRegions> <telerik:GridGroupByRegion RegionName="StateName" HeaderText="State" SortOrder="Ascending" /> <telerik:GridGroupByRegion RegionName="CityName" HeaderText="City" SortOrder="Ascending" /> </GroupByRegions> </telerik:GridGroupByExpression> </GroupByExpressions> <RowIndicatorColumn> <HeaderStyle Width="20px"></HeaderStyle> </RowIndicatorColumn> <ExpandCollapseColumn> <HeaderStyle Width="20px"></HeaderStyle> </ExpandCollapseColumn> <Columns> <telerik:GridBoundColumn UniqueName="StateName" DataRegion="StateName" HeaderText="State" Visible="false" /> <telerik:GridBoundColumn UniqueName="CityName" DataRegion="CityName" HeaderText="City" Visible="false" /> <telerik:GridBoundColumn DataRegion="RegionName" HeaderText="Region" /> <telerik:GridBoundColumn DataRegion="Area" HeaderText="Area (acres)" DataFormatString="{0:F2}" /> <telerik:GridBoundColumn DataRegion="" HeaderText="" DataFormatString="{0:MM/dd/yyyy}" /> <telerik:GridBoundColumn DataRegion="" HeaderText="" DataFormatString="{0:MM/dd/yyyy}" /> <telerik:GridBoundColumn DataRegion="" HeaderText="" DataFormatString="{0:MM/dd/yyyy}" /> <telerik:GridBoundColumn DataRegion="" HeaderText="" DataFormatString="{0:MM/dd/yyyy}" /> <telerik:GridBoundColumn DataRegion="" HeaderText="" DataFormatString="{0:MM/dd/yyyy}" /> <telerik:GridBoundColumn DataRegion="" HeaderText="" /> <telerik:GridBoundColumn DataRegion="" HeaderText="" DataFormatString="{0:MM/dd/yyyy}" /> </Columns> </MasterTableView></telerik:RadGrid>Greetings,
I am new to Telerik (pretty new to asp.net) and cannot figure out why my AXAX CascadingDropDown events do not fire when I wire them up to control my RadAjaxLoadingPanel. The LoadingPanel updates but no SelectedIndexChanged event is call.
My code works when I disable/remove theRadAjaxLoadingPanel
I looked all over for the CascadingDropDown example but no success. I saw that I might need to rebind, but I'm not sure what I'm looking for to do this? Thanks
ASPX Page
<form id="frm1" runat="server" class="" enableviewstate="true"><telerik:RadScriptManager runat="server" ID="RadScriptManager1"> </telerik:RadScriptManager> <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" DefaultLoadingPanelID="RadAjaxLoadingPanel1" EnablePageHeadUpdate="False" ViewStateMode="Enabled"> <AjaxSettings> <telerik:AjaxSetting AjaxControlID="auto_ddlMake"> <UpdatedControls> <telerik:AjaxUpdatedControl ControlID="RadAjaxLoadingPanel1"></telerik:AjaxUpdatedControl> </UpdatedControls> </telerik:AjaxSetting> <telerik:AjaxSetting AjaxControlID="auto_ddlModel"> <UpdatedControls> <telerik:AjaxUpdatedControl ControlID="RadAjaxLoadingPanel1"></telerik:AjaxUpdatedControl> </UpdatedControls> </telerik:AjaxSetting> <telerik:AjaxSetting AjaxControlID="lnkReset" EventName="Click"> <UpdatedControls> <telerik:AjaxUpdatedControl ControlID="RadAjaxLoadingPanel1"></telerik:AjaxUpdatedControl> </UpdatedControls> </telerik:AjaxSetting> </AjaxSettings> </telerik:RadAjaxManager><asp:DropDownList ID="auto_ddlMake" runat="server" AutoPostBack="True" class="itext" OnSelectedIndexChanged="auto_ddlMake_SelectedIndexChanged" Width="125px" /> <ajaxToolkit:CascadingDropDown ID="CascadingDropDown1" runat="server" Category="Make" ParentControlID="auto_ddlYear" PromptText="-- Pick --" ServiceMethod="GetMakes" ServicePath="CascadingDropDown.asmx" TargetControlID="auto_ddlMake" /><asp:DropDownList ID="auto_ddlModel" runat="server" AutoPostBack="True" class="itext" OnSelectedIndexChanged="auto_ddlModel_SelectedIndexChanged" Width="125px" /> <ajaxToolkit:CascadingDropDown ID="CascadingDropDown2" runat="server" Category="Model" ParentControlID="auto_ddlMake" PromptText="-- Pick --" ServiceMethod="GetModels" ServicePath="CascadingDropDown.asmx" TargetControlID="auto_ddlModel" /><asp:LinkButton ID="lnkReset" runat="server" CausesValidation="False" OnClick="btnReset_Click" Text="Reset" ToolTip="Clear all fields"></asp:LinkButton><telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" ViewStateMode="Enabled"> <div class="loading"> Loading<br /> <asp:Image ID="Image1" runat="server" ImageUrl="~/images/loading1.gif" AlternateText="loading"> </asp:Image> </div> </telerik:RadAjaxLoadingPanel></form>Codebehind
protected void auto_ddlModel_SelectedIndexChanged(object sender, System.EventArgs e) { Response.Write("ddlmodel Called!"); Response.End(); }

<telerik:RadTreeView ID="RadTreeView1" runat="server" CheckBoxes="True" MultipleSelect="True" EnableViewState="true" ShowLineImages="False" EnableEmbeddedSkins="False" Skin="tree_2" OnNodeClick="RadTreeView1_NodeClick" OnNodeDataBound="RadTreeView1_NodeDataBound" OnClientNodeCollapsed="OnClientNodeCollapsed" OnClientNodeExpanded="OnClientNodeExpanded"> <NodeTemplate> <small> <asp:Label ID="lblnodeText" Text='<%#Eval("Title") %>' runat="server" /><asp:Label ID="lblCatId" Text='<%#Eval("Id") %>' runat="server" Visible="false"></asp:Label><asp:Label ID="lblisCustomer" Text='<%#Eval("isCustomer") %>' runat="server" Visible="false"></asp:Label><asp:Label ID="Description" runat="server" Text='<%#Eval("description") %>' Visible="false" /><asp:HiddenField ID="DescriptionVisible" runat="server" Value='<%#Eval("descriptionVisible") %>' /> </small><small><a href="javascript:Popup_Window('category_detail','<%# Eval("id") %>')" style="text-decoration: none;"><span style="color: #BBBBBB">e</span></a></small></NodeTemplate> </telerik:RadTreeView><?xml version="1.0" encoding="utf-16"?><Tree ShowLineImages="False" CheckBoxes="True" MultipleSelect="True" OnClientNodeExpanded="OnClientNodeExpanded" OnClientNodeCollapsed="OnClientNodeCollapsed" DataFieldID="Id" DataFieldParentID="IdParent" DataTextField="Title" DataValueField="Id" Skin="tree_2" EnableEmbeddedSkins="False"> <Node Text="Product Library" Value="1095" Expanded="True" Checkable="False" ExpandMode="ServerSide"> <Node Text="Spirits" Value="2270" Expanded="True" ExpandMode="ServerSide"> <Node Text="Boubon Wiskey" Value="2357" ExpandMode="ServerSide" /> <Node Text="Tequila" Value="2368" Expanded="True" ExpandMode="ServerSide"> <Node Text="Unknown Tequila" Value="2371" ExpandMode="ServerSide" /> <Node Text="Anejo" Value="2372" ExpandMode="ServerSide" /> <Node Text="Blanco" Value="2373" ExpandMode="ServerSide" /> <Node Text="Reposado" Value="2374" ExpandMode="ServerSide" /> </Node> <Node Text="Scotch" Value="2369" ExpandMode="ServerSide" /> <Node Text="Vodka" Value="2370" ExpandMode="ServerSide" /> </Node> <Node Text="Wines" Value="1564" Expanded="True" ExpandMode="ServerSide" /> <Node Text="Beer" Value="2251" ExpandMode="ServerSide" /> <Node Text="Miscellaneous" Value="2252" ExpandMode="ServerSide" /> <Node Text="By Country" Value="2287" ExpandMode="ServerSide" /> <Node Text="By Spirit Type" Value="2288" ExpandMode="ServerSide" /> <Node Text="By Grape Type" Value="2289" ExpandMode="ServerSide" /> <Node Text="By Region" Value="2295" ExpandMode="ServerSide" /> </Node> <Node Text="Retailers" Value="2356" Expanded="True" Checkable="False" ExpandMode="ServerSide"> <Node Text="Gates Circle" Value="2375" Expanded="True" ExpandMode="ServerSide"> <Node Text="Spirits" Value="2376" ExpandMode="ServerSide"> <Node Text="Vodka" Value="2382" ExpandMode="ServerSide" /> <Node Text="Tequila" Value="2383" ExpandMode="ServerSide"> <Node Text="Blanco" Value="2384" ExpandMode="ServerSide" /> </Node> <Node Text="Scotch" Value="2385" ExpandMode="ServerSide" /> </Node> <Node Text="Wine" Value="2377" ExpandMode="ServerSide" /> <Node Text="Beer" Value="2378" ExpandMode="ServerSide" /> <Node Text="Miscellaneous" Value="2379" ExpandMode="ServerSide" /> </Node> <Node Text="Emilio's Beverage Warehouse" Value="2386" ExpandMode="ServerSide"> <Node Text="Spirits" Value="2387" ExpandMode="ServerSide" /> <Node Text="Wine" Value="2388" ExpandMode="ServerSide" /> <Node Text="Beer" Value="2389" ExpandMode="ServerSide" /> <Node Text="Miscellaneous" Value="2390" ExpandMode="ServerSide" /> </Node> <Node Text="Pickard Liquor" Value="2396" ExpandMode="ServerSide"> <Node Text="Spirits" Value="2397" ExpandMode="ServerSide" /> <Node Text="Wine" Value="2398" ExpandMode="ServerSide" /> <Node Text="Beer" Value="2399" ExpandMode="ServerSide" /> <Node Text="Miscellaneous" Value="2400" ExpandMode="ServerSide" /> </Node> </Node></Tree>