I have a page with vertical splitter, in the left pane, i have 2 treeviews, the fisrt is Gmail folder, the seconf is googledrive folder. when i select a node in gmail folder treeview, i must show email grid with is own toolbar in the right pane and when i select a node in Google drive folder, i must show Google drive grid with is own toolbar. To do this i create in right pane (ContentPane), 3 div. What i want to do is to refresh all right pane if i select a node in gmail or Google drive folders treeview. How i can do this ?

<%@ Page Title="" Language="vb" AutoEventWireup="false" MasterPageFile="~/MainPage.master" CodeBehind="ManageGoogle.aspx.vb" Inherits=".ManageGoogle" %>

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

<asp:Content ID="Content1" ContentPlaceHolderID="centerPlaceHolder" runat="server">
<telerik:radcodeblock id="RadCodeBlock" runat="server">
<script type="text/javascript" language="javascript">

var toolbar;
var searchButton;

function onButtonClicked(sender, args) {
var commandName = args.get_item().get_commandName();
if (commandName == "doSearch") {
var searchTextBox = sender.findButtonByCommandName("searchText").findControl("txtSearch");
if (searchButton.get_value() == "clear") {
searchTextBox.set_value("");
searchButton.set_imageUrl("images/search.gif");
searchButton.set_value("search");
}

performSearch(searchTextBox.get_value());
}
}

function onKeyPress(sender, args) {
if (args.get_keyCode() == 13) {
performSearch(sender.get_textBoxValue());
}
}

function performSearch(searchText) {
if (searchText) {
searchButton.set_imageUrl("~/images/clear.gif");
searchButton.set_value("clear");
}
ajaxManager.ajaxRequest(searchText);
}

function GMail_onButtonClicked(sender, args) {
var commandName = args.get_item().get_commandName();
if (commandName == "doSearch") {
}
}

function GoogleDrive_onButtonClicked(sender, args) {
var commandName = args.get_item().get_commandName();
if (commandName == "doSearch") {
}
}

function GMail_onGridRowSelected(sender, args) {
}

function GoogleDrive_onGridRowSelected(sender, args) {
}

function onGMailNodeClicking(sender, args) {

}

function onGoogleDriveNodeClicking(sender, args) {

}

function onClientPanelItemExpand(sender, eventArgs) {
var item = eventArgs.get_item();
if (item.get_text() == "GMail") {
initiateAjaxRequest("LoadTreeviewGMailFolders", null, null, null, null); return false;
}
else {
initiateAjaxRequest("LoadTreeviewGoogleDriveFolders", null, null, null, null); return false;
}
}


</script>
</telerik:radcodeblock>

<telerik:radajaxmanagerproxy runat="server" id="RadAjaxManagerProxy">
<ajaxsettings>

<telerik:AjaxSetting AjaxControlID="RadAjaxManagerProxy">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="pnlGoogle" />
</UpdatedControls>
</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="trvGMailFolders">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="Panel1" />
</UpdatedControls>
</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="trvGoogleDriveFolders">
<UpdatedControls>

</UpdatedControls>
</telerik:AjaxSetting>

</ajaxsettings>
</telerik:radajaxmanagerproxy>

<telerik:radajaxloadingpanel runat="server" id="RadAjaxLoadingPanel" skin="Office2010Blue">
</telerik:radajaxloadingpanel>

<div style="width: 100%; height: 100%; min-height: 100%; overflow: hidden;">

<telerik:RadSplitter ID="mainSplitter" runat="server" Height="100%" Width="100%" visibleduringinit="false" bordersize="1" borderstyle="Solid"
panesbordersize="0" skin="Office2010Blue">
<telerik:RadPane ID="navigationPane" runat="server" Width="220px">
<telerik:RadToolBar runat="server" ID="RadToolBarSearch" OnClientButtonClicked="onButtonClicked" EnableViewState="false" Skin="Office2010Blue" Height="30px" width="100%">
<items>
<telerik:RadToolBarButton Value="searchTextBoxButton" CommandName="searchText">
<ItemTemplate>
<telerik:RadTextBox runat="server" ID="txtSearch" EmptyMessage="Rechercher" CssClass="inbox-search-textbox" Width="100%" ClientEvents-OnKeyPress="onKeyPress" />
</ItemTemplate>
</telerik:RadToolBarButton>
<telerik:RadToolBarButton ImageUrl="~/Images/search.gif" Value="search" CommandName="doSearch" width="24px"/>
</items>
</telerik:RadToolBar>



<telerik:RadPanelBar runat="server" ID="pnlGoogle" Width="100%" Skin="Office2010Blue" OnClientItemExpand="onClientPanelItemExpand">
<Items>
<telerik:RadPanelItem Value="pnlGMail" Expanded="False" Text="GMail" ImageUrl="~/Images/GMail.gif" >
<Items>
<telerik:RadPanelItem Value="GMail">
<ItemTemplate>
<telerik:RadTreeView runat="Server" ID="trvGMailFolders" OnNodeClick="trvGMailFolders_NodeClick" OnClientNodeClicking="onGMailNodeClicking" Skin="Office2010Blue">
</telerik:RadTreeView>
</ItemTemplate>
</telerik:RadPanelItem>
</Items>
</telerik:RadPanelItem>


<telerik:RadPanelItem Value="pnlGoogleDrive" Expanded="False" Text="Google Drive" ImageUrl="~/Images/GoogleDrive.gif">
<Items>
<telerik:RadPanelItem Value="GoogleDrive">
<ItemTemplate>
<telerik:RadTreeView runat="Server" ID="trvGoogleDriveFolders" OnNodeClick="trvGoogleDriveFolders_NodeClick" OnClientNodeClicking="onGoogleDriveNodeClicking" Skin="Office2010Blue">
</telerik:RadTreeView>
</ItemTemplate>
</telerik:RadPanelItem>
</Items>
</telerik:RadPanelItem>

</Items>
</telerik:RadPanelBar>



</telerik:RadPane>

<telerik:RadSplitBar ID="RadSplitbar" runat="server" CollapseMode="Forward">
</telerik:RadSplitBar>

<telerik:RadPane ID="ContentPane" runat="server" visible="false">

<asp:Panel ID="Panel1" runat="server">

<div id="divSearchContent" runat="server">
Search
</div>
<div id="divGMailContent" runat="server">
<telerik:RadToolBar runat="server" ID="RadToolBarGMail" OnClientButtonClicked="GMail_onButtonClicked" EnableViewState="false" Skin="Office2010Blue" Height="30px">
<items>
<telerik:RadToolBarButton Value="filterByDate" CommandName="filterByDate">
<ItemTemplate>
<asp:Label ID="lblFromDate" runat="server" Text="<%$Resources:lblFromDate%>" SkinID="Office2010Blue" style="padding-right:5px;"></asp:Label>
<telerik:RadDatePicker ID="rdpFromDate" runat="server" Width="110px" AutoPostBack="false" DateInput-EmptyMessage="MinDate" MinDate="01/01/1000" MaxDate="01/01/3000" Skin="Office2010Blue">
<Calendar>
<SpecialDays>
<telerik:RadCalendarDay Repeatable="Today" ItemStyle-CssClass="rcToday">
</telerik:RadCalendarDay>
</SpecialDays>
</Calendar>
</telerik:RadDatePicker>
<asp:Label ID="lblToDate" runat="server" Text="<%$Resources:lblToDate%>" SkinID="Office2010Blue" style="padding-right:5px" ></asp:Label>
<telerik:RadDatePicker ID="rdpToDate" runat="server" Width="110px" AutoPostBack="false" DateInput-EmptyMessage="MaxDate" MinDate="01/01/1000" MaxDate="01/01/3000" Skin="Office2010Blue">
<Calendar>
<SpecialDays>
<telerik:RadCalendarDay Repeatable="Today" ItemStyle-CssClass="rcToday">
</telerik:RadCalendarDay>
</SpecialDays>
</Calendar>
</telerik:RadDatePicker>
</ItemTemplate>
</telerik:RadToolBarButton>
<telerik:RadToolBarButton ImageUrl="~/Images/filter.png" ToolTip="<%$Resources:btnApplyMailFilter%>" CommandName="ApplyMailFilter" Text="<%$Resources:btnApplyMailFilter%>" />
<telerik:RadToolBarButton IsSeparator="true" />
<telerik:RadToolBarButton ImageUrl="~/Images/move.gif" Enabled="false" ToolTip="<%$Resources:btnTransferToSyGED%>" CommandName="TransferToSyGED" Text="<%$Resources:btnTransferToSyGED%>" />
<telerik:RadToolBarButton IsSeparator="true" />
<telerik:RadToolBarButton ImageUrl="~/Images/move.gif" Enabled="false" ToolTip="<%$Resources:btnTransferAttachmentsToSyGED%>" CommandName="TransferAttachmentsToSyGED" Text="<%$Resources:btnTransferAttachmentsToSyGED%>" />
</items>
</telerik:RadToolBar>


<telerik:RadGrid runat="server" ID="grdGMail" AutoGenerateColumns="false" GridLines="None" BorderWidth="0" AllowSorting="true" Style="outline: none" Skin="Office2010Blue">
<clientsettings>
<Selecting AllowRowSelect="true" />
<Scrolling UseStaticHeaders="true" AllowScroll="true" ScrollHeight="100%" />
<ClientEvents OnRowSelected="GMail_onGridRowSelected"/>
</clientsettings>
<mastertableview tablelayout="Fixed" grouploadmode="Client" ClientDataKeyNames="MessageID" width="100%" nomasterrecordstext="<%$Resources:GMail_grdNoRecordMessage%>">
<SortExpressions>
<telerik:GridSortExpression FieldName="Received" SortOrder="Descending" />
</SortExpressions>
<Columns>
<telerik:GridBoundColumn DataField="From" HeaderText="<%$Resources:GMail_grdFromHeader%>" HeaderStyle-Width="240px">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="Subject" HeaderText="<%$Resources:GMail_grdSubjectHeader%>" >
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="Received" HeaderText="<%$Resources:GMail_grdDateHeader%>" HeaderStyle-Width="150px">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="MessageID" Display="False">
</telerik:GridBoundColumn>
</Columns>
</mastertableview>
</telerik:RadGrid>
</div>

<div id="divGoogleDriveContent" runat="server" visible="false">
<telerik:RadToolBar runat="server" ID="RadToolBarGoogleDrive" OnClientButtonClicked="GoogleDrive_onButtonClicked" EnableViewState="false" Skin="Office2010Blue" Height="30px">
<items>
<telerik:RadToolBarButton ImageUrl="~/Images/move.gif" Enabled="false" ToolTip="<%$Resources:btnTransferFolderToSyGED%>" CommandName="TransferFolderToSyGED" Text="<%$Resources:btnTransferFolderToSyGED%>" />
<telerik:RadToolBarButton IsSeparator="true" />
<telerik:RadToolBarButton ImageUrl="~/Images/move.gif" Enabled="false" ToolTip="<%$Resources:btnTransferDocumentsToSyGED%>" CommandName="TransferDocumentsToSyGED" Text="<%$Resources:btnTransferDocumentsToSyGED%>" />
</items>
</telerik:RadToolBar>

<telerik:RadGrid runat="server" ID="grdGoogleDrive" AutoGenerateColumns="false" GridLines="None" BorderWidth="0" AllowSorting="true" Style="outline: none" Skin="Office2010Blue">
<clientsettings>
<Selecting AllowRowSelect="true" />
<Scrolling UseStaticHeaders="true" AllowScroll="true" ScrollHeight="100%" />
<ClientEvents OnRowSelected="GoogleDrive_onGridRowSelected"/>
</clientsettings>
<mastertableview tablelayout="Fixed" grouploadmode="Client" ClientDataKeyNames="MessageID" width="100%" nomasterrecordstext="<%$Resources:GMail_grdNoRecordMessage%>">
<SortExpressions>
<telerik:GridSortExpression FieldName="Received" SortOrder="Descending" />
</SortExpressions>
<Columns>
<telerik:GridBoundColumn DataField="From" HeaderText="<%$Resources:GMail_grdFromHeader%>" HeaderStyle-Width="240px">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="Subject" HeaderText="<%$Resources:GMail_grdSubjectHeader%>" >
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="Received" HeaderText="<%$Resources:GMail_grdDateHeader%>" HeaderStyle-Width="150px">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="MessageID" Display="False">
</telerik:GridBoundColumn>
</Columns>
</mastertableview>
</telerik:RadGrid>

</div>

</asp:Panel>

</telerik:RadPane>

</telerik:RadSplitter>

</asp:Content>

Hello,

One possible approach would be to set the ContentUrl property of the the RadPane you want the RadGrid controls to be displayed in:
This would allow to load different pages containing the corresponding RadGrid on RadTreeViewNode click.

Regards,
Ivan Danchev
Telerik