TreeView in ComboBox

[FreshOne]

hi all,
i have a grid, which the EditFormType is set to WebUserControl. On edit i need a combobox that contains a treeview, so i followed this example http://demos.telerik.com/aspnet-ajax/treeview/examples/functionality/treeviewcombobox/defaultcs.aspx?product=treeview

the problem is that when i select a node from the combobox it doesn't respond at the first time, i need to re-select a node again
here is my code

<%@ Control Language="vb" AutoEventWireup="false" CodeBehind="Edit.ascx.vb" Inherits="UCMS.LinksEdit" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">
    <script type="text/javascript">
        function OpenFileExplorerDialog()
        {
            var wnd = $find("<%= ExplorerWindow.ClientID %>");
            wnd.show();
        }

        //This function is called from the Explorer.aspx page
        function OnFileSelected(wnd, fileSelected)
        {
            var textbox = $get("<%= fileName.ClientID %>");
            textbox.value = fileSelected;
        }

        function nodeClicking(sender, args)
        {
            var comboBox = $find("<%= RadComboBox1.ClientID %>");

            var node = args.get_node()

            comboBox.set_text(node.get_text());

            comboBox.trackChanges();
            comboBox.get_items().getItem(0).set_value(node.get_text());
            comboBox.commitChanges();

            comboBox.hideDropDown();
        }

        function StopPropagation(e)
        {
            if(!e)
            {
                e = window.event;
            }

            e.cancelBubble = true;
        }

        function OnClientDropDownOpenedHandler(sender, eventArgs)
        {
            var tree = sender.get_items().getItem(0).findControl("RadTreeView1");
            var selectedNode = tree.get_selectedNode();
            if (selectedNode)
            {
                selectedNode.scrollIntoView();
            }
        }
    </script>
</telerik:RadScriptBlock>

<telerik:RadWindow runat="server" Width="550px" Height="560px" VisibleStatusbar="false"
    NavigateUrl="/Components/Links/Explorer.aspx" ID="ExplorerWindow" Modal="true" Behaviors="Close,Move">
</telerik:RadWindow>

<telerik:RadFormDecorator ID="FormDecorator1" runat="server" DecoratedControls="all" Skin="Default"></telerik:RadFormDecorator>

<br />
<table cellpadding="3" cellspacing="0" border="0" width="100%">
    <tr>
        <td width="12%">Title:</td>
        <td width="88%">
            <telerik:RadTextBox ID="txtTitle" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.title") %>'></telerik:RadTextBox>
            <asp:RequiredFieldValidator ID="RequiredFieldValidator1" ControlToValidate="txtTitle" ErrorMessage="*" runat="server" Display="Dynamic"></asp:RequiredFieldValidator>
            <asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="This title is already used" ControlToValidate="txtTitle" Display="Dynamic" OnServerValidate="checkTitle"></asp:CustomValidator>
        </td>
    </tr>
    <tr>
        <td>Link to:</td>
        <td>
            <telerik:RadComboBox ID="RadComboBox2" runat="server" MarkFirstMatch="true" AutoPostBack="true">
                <Items>
                    <telerik:RadComboBoxItem Text="Select type" Value="0" />
                    <telerik:RadComboBoxItem Text="Page on the website" Value="1" />
                    <telerik:RadComboBoxItem Text="File on the website" Value="2" />
                    <telerik:RadComboBoxItem Text="External URL" Value="3" />
                </Items>
            </telerik:RadComboBox>
            <asp:RequiredFieldValidator ID="RequiredFieldValidator2" ControlToValidate="RadComboBox2" ErrorMessage="*" runat="server" Display="Dynamic" InitialValue="Select type"></asp:RequiredFieldValidator>
        </td>
    </tr>
    <tr id="trPages" runat="server" visible="true">
        <td>Destination:</td>
        <td>
            <div>
                <telerik:RadComboBox ID="RadComboBox1" runat="server" Height="140px" Width="215px"
                    ShowToggleImage="True" Style="vertical-align: middle;" OnClientDropDownOpened="OnClientDropDownOpenedHandler"
                    EmptyMessage="Choose a destination" ExpandAnimation-Type="None" CollapseAnimation-Type="None">
                    <ItemTemplate>
                        <div id="div1">
                            <telerik:RadTreeView runat="server" ID="RadTreeView1" OnClientNodeClicking="nodeClicking" Height="138px" Width="212px">
                                <Nodes>
                                    <telerik:RadTreeNode runat="server" Text="Africa" Expanded="true">
                                        <Nodes>
                                            <telerik:RadTreeNode runat="server" Text="Egypt">
                                                <Nodes>
                                                    <telerik:RadTreeNode runat="server" Text="Cairo">
                                                    </telerik:RadTreeNode>
                                                </Nodes>
                                            </telerik:RadTreeNode>
                                            <telerik:RadTreeNode runat="server" Text="South Africa">
                                                <Nodes>
                                                    <telerik:RadTreeNode runat="server" Text="Cape Town">
                                                    </telerik:RadTreeNode>
                                                </Nodes>
                                            </telerik:RadTreeNode>
                                            <telerik:RadTreeNode runat="server" Text="Kenya">
                                                <Nodes>
                                                    <telerik:RadTreeNode runat="server" Text="Nairobi" Value="1999">
                                                    </telerik:RadTreeNode>
                                                </Nodes>
                                            </telerik:RadTreeNode>
                                        </Nodes>
                                    </telerik:RadTreeNode>
                                    <telerik:RadTreeNode runat="server" Text="North America" Expanded="true">
                                        <Nodes>
                                            <telerik:RadTreeNode runat="server" Text="USA">
                                                <Nodes>
                                                    <telerik:RadTreeNode runat="server" Text="New York">
                                                    </telerik:RadTreeNode>
                                                    <telerik:RadTreeNode runat="server" Text="Los Angeles">
                                                    </telerik:RadTreeNode>
                                                    <telerik:RadTreeNode runat="server" Text="Boston">
                                                    </telerik:RadTreeNode>
                                                </Nodes>
                                            </telerik:RadTreeNode>
                                            <telerik:RadTreeNode runat="server" Text="Canada">
                                                <Nodes>
                                                    <telerik:RadTreeNode runat="server" Text="Toronto">
                                                    </telerik:RadTreeNode>
                                                    <telerik:RadTreeNode runat="server" Text="Ottawa">
                                                    </telerik:RadTreeNode>
                                                    <telerik:RadTreeNode runat="server" Text="Vancouver">
                                                    </telerik:RadTreeNode>
                                                </Nodes>
                                            </telerik:RadTreeNode>
                                            <telerik:RadTreeNode runat="server" Text="Mexico">
                                                <Nodes>
                                                    <telerik:RadTreeNode runat="server" Text="Mexico City">
                                                    </telerik:RadTreeNode>
                                                    <telerik:RadTreeNode runat="server" Text="Cancun">
                                                    </telerik:RadTreeNode>
                                                </Nodes>
                                            </telerik:RadTreeNode>
                                        </Nodes>
                                    </telerik:RadTreeNode>
                                </Nodes>
                            </telerik:RadTreeView>
                        </div>
                    </ItemTemplate>
                    <Items>
                        <telerik:RadComboBoxItem Text="" />
                    </Items>
                </telerik:RadComboBox>

                <script type="text/javascript">
                    var div1 = document.getElementById("div1");
                    div1.onclick = StopPropagation;
                </script>

                <asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator3" ErrorMessage="Choose a destination first" ControlToValidate="RadComboBox1" />
            </div>
        </td>
    </tr>
    <tr id="trFiles" runat="server" visible="false">
        <td></td>
        <td>
            <asp:TextBox ID="fileName" runat="server" Width="350px"></asp:TextBox>
            <asp:Button ID="selectFile" OnClientClick="OpenFileExplorerDialog(); return false;" Text="Browse" runat="server" />
        </td>
    </tr>
    <tr id="trURL" runat="server" visible="false">
        <td></td>
        <td>
            <telerik:RadTextBox ID="txtURL" runat="server" Width="350px" Text="http://"></telerik:RadTextBox>
        </td>
    </tr>
    <tr>
        <td>Start Date:</td>
        <td>
            <telerik:RadDatePicker ID="RadDatePicker1" runat="server" ></telerik:RadDatePicker>
            <asp:CompareValidator ID="CompareValidator1" runat="server" ControlToValidate="RadDatePicker1" ErrorMessage="Date can't be earlier than today" Operator="GreaterThanEqual" Type="Date" ValueToCompare='<%# DateTime.Now.ToShortDateString() %>' Display="Dynamic"></asp:CompareValidator>
        </td>
    </tr>
    <tr>
        <td>End Date:</td>
        <td>
            <telerik:RadDatePicker ID="RadDatePicker2" runat="server"></telerik:RadDatePicker>
            <asp:CompareValidator ID="CompareValidator2" runat="server" ControlToValidate="RadDatePicker2" ErrorMessage="End date can't be earlier than today or earlier than start date" Operator="GreaterThanEqual" Type="Date" ValueToCompare='<%# DateTime.Now.ToShortDateString() %>' ControlToCompare="RadDatePicker1" Display="Dynamic"></asp:CompareValidator>
        </td>
    </tr>
    <tr>
        <td>Publish:</td>
        <td>
            <asp:CheckBox ID="CheckBox1" runat="server"  />
        </td>
    </tr>
    <tr>
        <td>Category:</td>
        <td>
            <telerik:RadComboBox ID="RadComboBox3" runat="server" MarkFirstMatch="true" OnLoad="RadComboBox3_Load" DataTextField="categoryName" DataValueField="categoryID" SelectedValue='<%# DataBinder.Eval(Container, "DataItem.categoryID") %>' AppendDataBoundItems="true"></telerik:RadComboBox>
            <asp:RequiredFieldValidator ID="RequiredFieldValidator6" ControlToValidate="RadComboBox3" ErrorMessage="*" runat="server" Display="Dynamic" InitialValue="Select category"></asp:RequiredFieldValidator>
        </td>
    </tr>
    <tr>
        <td align="right" colspan="2">
            <asp:ImageButton ID="btnUpdate" runat="server" CommandName="Update" Visible='<%# Not (TypeOf DataItem Is Telerik.Web.UI.GridInsertionObject) %>' ImageUrl="/Themes/images/Update.gif" />
            <asp:ImageButton ID="btnInsert" runat="server" CommandName="PerformInsert" Visible='<%# (TypeOf DataItem Is Telerik.Web.UI.GridInsertionObject) %>' ImageUrl="/Themes/images/Update.gif" />
            <asp:ImageButton ID="btnCancel" runat="server" CommandName="Cancel" CausesValidation="false" ImageUrl="/Themes/images/Cancel.gif" />
        </td>
    </tr>
</table>

wht would be causing it??
any hint is really appreciated

[Veronica]

Hi FreshOne,

I inspected your code but did'n find anything disturbing. Could you please attach the full code so I can see it in details.

Greetings,
Veronica Milcheva
the Telerik team

Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.

[FreshOne]

hi Veronica, thnx for ur reply, here is my code

<%@ Control Language="vb" AutoEventWireup="false" CodeBehind="view.ascx.vb" Inherits="UCMS.LinksView" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">
    <script type="text/javascript">
        function RowDblClick(sender, eventArgs) {
            sender.get_masterTableView().editItem(eventArgs.get_itemIndexHierarchical());
        }
    </script>
</telerik:RadScriptBlock>

<telerik:RadGrid AllowFilteringByColumn="true" AllowSorting="true" ID="RadGrid1" GridLines="None" runat="server"
        AllowAutomaticDeletes="True" AllowAutomaticInserts="True" PageSize="10" AllowAutomaticUpdates="True" AllowPaging="True"
        AutoGenerateColumns="False" Skin="Umniah" EnableEmbeddedSkins="false">
    <PagerStyle Mode="NextPrevAndNumeric" AlwaysVisible="true" />
    <GroupingSettings CaseSensitive="false" />
    <MasterTableView CommandItemDisplay="TopAndBottom" DataKeyNames="linkID" HorizontalAlign="NotSet" AutoGenerateColumns="False" EditMode="PopUp">
        <Columns>
            <telerik:GridEditCommandColumn ButtonType="ImageButton" UniqueName="EditCommandColumn" >
            </telerik:GridEditCommandColumn>

           <telerik:GridTemplateColumn HeaderText="Title" SortExpression="title" UniqueName="title" AutoPostBackOnFilter="true" DataField="title">
                <ItemTemplate>
                    <%# Eval("title")%>
                </ItemTemplate>
            </telerik:GridTemplateColumn>

           <telerik:GridTemplateColumn HeaderText="Link" SortExpression="link" UniqueName="link" AutoPostBackOnFilter="true" DataField="link" EditFormColumnIndex="1">
                <ItemTemplate>
                    <a href='<%# Eval("link") %>' target="_blank"><%#Eval("link")%></a>
                </ItemTemplate>
            </telerik:GridTemplateColumn>

            <telerik:GridDateTimeColumn HeaderText="Start Date" SortExpression="startDate" UniqueName="startDate" AutoPostBackOnFilter="true" DataField="startDate"
                FilterControlWidth="110px" PickerType="DatePicker" DataFormatString="{0:d/M/yyyy}" ReadOnly="true">
            </telerik:GridDateTimeColumn>

            <telerik:GridDateTimeColumn HeaderText="End Date" SortExpression="endDate" UniqueName="endDate" AutoPostBackOnFilter="true" DataField="endDate"
                FilterControlWidth="110px" PickerType="DatePicker" DataFormatString="{0:d/M/yyyy}" ReadOnly="true">
            </telerik:GridDateTimeColumn>

            <telerik:GridCheckBoxColumn HeaderText="Publish" SortExpression="publish" UniqueName="publish" ReadOnly="true" AutoPostBackOnFilter="true" DataField="publish">
            </telerik:GridCheckBoxColumn>

            <telerik:GridNumericColumn HeaderText="Visits #" SortExpression="visitsNO" UniqueName="visitsNO" AutoPostBackOnFilter="true" DataField="visitsNO" ReadOnly="true" FilterControlWidth="50px">
            </telerik:GridNumericColumn>

            <telerik:GridTemplateColumn HeaderText="Category" SortExpression="categoryName" UniqueName="category" AutoPostBackOnFilter="true" DataField="categoryName">
                <ItemTemplate>
                    <%# Eval("categoryName")%>
                </ItemTemplate>
            </telerik:GridTemplateColumn>

            <telerik:GridButtonColumn ConfirmText="Delete this link?" ConfirmDialogType="RadWindow" ConfirmTitle="Delete Confirmation"
                ButtonType="ImageButton" CommandName="Delete" Text="Delete" UniqueName="DeleteColumn">
            </telerik:GridButtonColumn>
        </Columns>

        <EditFormSettings CaptionFormatString="Edit Link" PopUpSettings-Modal="true" InsertCaption="Add Link" EditFormType="WebUserControl" UserControlName="Components/Links/Edit.ascx">
            <FormCaptionStyle CssClass="hide" />
            <FormMainTableStyle GridLines="None" CellSpacing="0" CellPadding="3" Width="100%" Height="100%" />
            <FormTableButtonRowStyle HorizontalAlign="Right" />
            <PopUpSettings Width="740px" Height="370px" />
            <EditColumn ButtonType="ImageButton" InsertText="Insert link" UpdateText="Update link"
                UniqueName="EditCommandColumn1" CancelText="Cancel edit" />
        </EditFormSettings>
    </MasterTableView>
    <ClientSettings>
        <ClientEvents OnRowDblClick="RowDblClick" />
    </ClientSettings>
</telerik:RadGrid>

Imports Telerik.Web.UI

Partial Public Class LinksView
    Inherits System.Web.UI.UserControl

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not IsPostBack Then
            RadGrid1.DataSource = bindData()
            RadGrid1.DataBind()
        End If
    End Sub

    Function bindData() As DataTable
        Dim dt As New DataTable
        dt.Columns.Add(New DataColumn("linkID"))
        dt.Columns.Add(New DataColumn("title"))
        dt.Columns.Add(New DataColumn("link"))
        dt.Columns.Add(New DataColumn("startDate"))
        dt.Columns.Add(New DataColumn("endDate"))
        dt.Columns.Add(New DataColumn("publish"))
        dt.Columns.Add(New DataColumn("visitsNO"))
        dt.Columns.Add(New DataColumn("categoryID"))
        dt.Columns.Add(New DataColumn("categoryName"))

        dt.Columns(0).DataType = System.Type.GetType("System.Int32")
        dt.Columns(1).DataType = System.Type.GetType("System.String")
        dt.Columns(2).DataType = System.Type.GetType("System.String")
        dt.Columns(3).DataType = System.Type.GetType("System.DateTime")
        dt.Columns(4).DataType = System.Type.GetType("System.DateTime")
        dt.Columns(5).DataType = System.Type.GetType("System.Boolean")
        dt.Columns(6).DataType = System.Type.GetType("System.Int32")
        dt.Columns(7).DataType = System.Type.GetType("System.Int32")
        dt.Columns(8).DataType = System.Type.GetType("System.String")

        Dim dr As DataRow = dt.NewRow
        dr.Item(0) = 1
        dr.Item(1) = "qwer fghjgh"
        dr.Item(2) = "http://www.google.com"
        dr.Item(3) = "1/6/2010"
        dr.Item(4) = "1/7/2010"
        dr.Item(5) = True
        dr.Item(6) = 34
        dr.Item(7) = 1
        dr.Item(8) = "AA"
        dt.Rows.Add(dr)

        dr = dt.NewRow
        dr.Item(0) = 2
        dr.Item(1) = "rtyuu fghjghj"
        dr.Item(2) = "http://www.google.com"
        dr.Item(3) = "1/5/2010"
        dr.Item(4) = "1/9/2010"
        dr.Item(5) = False
        dr.Item(6) = 57
        dr.Item(7) = 2
        dr.Item(8) = "BB"
        dt.Rows.Add(dr)

        dr = dt.NewRow
        dr.Item(0) = 3
        dr.Item(1) = "sdfg gfj yj"
        dr.Item(2) = "http://www.google.com"
        dr.Item(3) = "1/10/2010"
        dr.Item(4) = "1/12/2010"
        dr.Item(5) = False
        dr.Item(6) = 34
        dr.Item(7) = 3
        dr.Item(8) = "CC"
        dt.Rows.Add(dr)

        dr = dt.NewRow
        dr.Item(0) = 4
        dr.Item(1) = "sdg hgj jlkj"
        dr.Item(2) = "http://www.google.com"
        dr.Item(3) = "1/4/2010"
        dr.Item(4) = "1/8/2010"
        dr.Item(5) = True
        dr.Item(6) = 34
        dr.Item(7) = 4
        dr.Item(8) = "DD"
        dt.Rows.Add(dr)

        Session("dt") = dt
        Return dt
    End Function

    Protected Sub RadGrid1_NeedDataSource(ByVal source As Object, ByVal e As Telerik.Web.UI.GridNeedDataSourceEventArgs) Handles RadGrid1.NeedDataSource
        RadGrid1.DataSource = bindData()
    End Sub

    Private Sub RadGrid1_ItemCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) Handles RadGrid1.ItemCommand
        If e.CommandName = "Update" Then
            If Page.IsValid Then
                'update code
                e.Item.Edit = False
            End If
        ElseIf e.CommandName = "PerformInsert" Then
            If Page.IsValid Then
                'insert code
                e.Canceled = True
                e.Item.OwnerTableView.IsItemInserted = False
                e.Item.OwnerTableView.Rebind()
            End If
        ElseIf e.CommandName = "Delete" Then
            'delete code
        End If
    End Sub

    Private Sub RadGrid1_ItemDataBound(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs) Handles RadGrid1.ItemDataBound
        If (TypeOf e.Item Is GridEditableItem AndAlso e.Item.IsInEditMode) Then
            Dim item As GridEditableItem = CType(e.Item, GridEditableItem)
            If (item.OwnerTableView.IsItemInserted) Then
                Session("editedItemID") = 0
            Else
                Session("editedItemID") = item.GetDataKeyValue("linkID")
            End If
        End If
    End Sub

End Class

<%@ Control Language="vb" AutoEventWireup="false" CodeBehind="Edit.ascx.vb" Inherits="UCMS.LinksEdit" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">
    <script type="text/javascript">
        function OpenFileExplorerDialog()
        {
            var wnd = $find("<%= ExplorerWindow.ClientID %>");
            wnd.show();
        }

        //This function is called from the Explorer.aspx page
        function OnFileSelected(wnd, fileSelected)
        {
            var textbox = $get("<%= fileName.ClientID %>");
            textbox.value = fileSelected;
        }

        function nodeClicking(sender, args)
        {
            var comboBox = $find("<%= RadComboBox1.ClientID %>");

            var node = args.get_node()

            comboBox.set_text(node.get_text());

            comboBox.trackChanges();
            comboBox.get_items().getItem(0).set_value(node.get_text());
            comboBox.commitChanges();

            comboBox.hideDropDown();
        }

        function StopPropagation(e)
        {
            if(!e)
            {
                e = window.event;
            }

            e.cancelBubble = true;
        }

        function OnClientDropDownOpenedHandler(sender, eventArgs)
        {
            var tree = sender.get_items().getItem(0).findControl("RadTreeView1");
            var selectedNode = tree.get_selectedNode();
            if (selectedNode)
            {
                selectedNode.scrollIntoView();
            }
        }
    </script>
</telerik:RadScriptBlock>

<telerik:RadWindow runat="server" Width="550px" Height="560px" VisibleStatusbar="false"
    NavigateUrl="/Components/Links/Explorer.aspx" ID="ExplorerWindow" Modal="true" Behaviors="Close,Move">
</telerik:RadWindow>

<telerik:RadFormDecorator ID="FormDecorator1" runat="server" DecoratedControls="all" Skin="Default"></telerik:RadFormDecorator>

<br />
<table cellpadding="3" cellspacing="0" border="0" width="100%">
    <tr>
        <td width="12%">Title:</td>
        <td width="88%">
            <telerik:RadTextBox ID="txtTitle" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.title") %>'></telerik:RadTextBox>
            <asp:RequiredFieldValidator ID="RequiredFieldValidator1" ControlToValidate="txtTitle" ErrorMessage="*" runat="server" Display="Dynamic"></asp:RequiredFieldValidator>
            <asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="This title is already used" ControlToValidate="txtTitle" Display="Dynamic" OnServerValidate="checkTitle"></asp:CustomValidator>
        </td>
    </tr>
    <tr>
        <td>Link to:</td>
        <td>
            <telerik:RadComboBox ID="RadComboBox2" runat="server" MarkFirstMatch="true" AutoPostBack="true">
                <Items>
                    <telerik:RadComboBoxItem Text="Select type" Value="0" />
                    <telerik:RadComboBoxItem Text="Page on the website" Value="1" />
                    <telerik:RadComboBoxItem Text="File on the website" Value="2" />
                    <telerik:RadComboBoxItem Text="External URL" Value="3" />
                </Items>
            </telerik:RadComboBox>
            <asp:RequiredFieldValidator ID="RequiredFieldValidator2" ControlToValidate="RadComboBox2" ErrorMessage="*" runat="server" Display="Dynamic" InitialValue="Select type"></asp:RequiredFieldValidator>
        </td>
    </tr>
    <tr id="trPages" runat="server" visible="true">
        <td>Destination:</td>
        <td>
            <div>
                <telerik:RadComboBox ID="RadComboBox1" runat="server" Height="140px" Width="215px"
                    ShowToggleImage="True" Style="vertical-align: middle;" OnClientDropDownOpened="OnClientDropDownOpenedHandler"
                    EmptyMessage="Choose a destination" ExpandAnimation-Type="None" CollapseAnimation-Type="None">
                    <ItemTemplate>
                        <div id="div1">
                            <telerik:RadTreeView runat="server" ID="RadTreeView1" OnClientNodeClicking="nodeClicking" Height="138px" Width="212px">
                                <Nodes>
                                    <telerik:RadTreeNode runat="server" Text="Africa" Expanded="true">
                                        <Nodes>
                                            <telerik:RadTreeNode runat="server" Text="Egypt">
                                                <Nodes>
                                                    <telerik:RadTreeNode runat="server" Text="Cairo">
                                                    </telerik:RadTreeNode>
                                                </Nodes>
                                            </telerik:RadTreeNode>
                                            <telerik:RadTreeNode runat="server" Text="South Africa">
                                                <Nodes>
                                                    <telerik:RadTreeNode runat="server" Text="Cape Town">
                                                    </telerik:RadTreeNode>
                                                </Nodes>
                                            </telerik:RadTreeNode>
                                            <telerik:RadTreeNode runat="server" Text="Kenya">
                                                <Nodes>
                                                    <telerik:RadTreeNode runat="server" Text="Nairobi" Value="1999">
                                                    </telerik:RadTreeNode>
                                                </Nodes>
                                            </telerik:RadTreeNode>
                                        </Nodes>
                                    </telerik:RadTreeNode>
                                    <telerik:RadTreeNode runat="server" Text="North America" Expanded="true">
                                        <Nodes>
                                            <telerik:RadTreeNode runat="server" Text="USA">
                                                <Nodes>
                                                    <telerik:RadTreeNode runat="server" Text="New York">
                                                    </telerik:RadTreeNode>
                                                    <telerik:RadTreeNode runat="server" Text="Los Angeles">
                                                    </telerik:RadTreeNode>
                                                    <telerik:RadTreeNode runat="server" Text="Boston">
                                                    </telerik:RadTreeNode>
                                                </Nodes>
                                            </telerik:RadTreeNode>
                                            <telerik:RadTreeNode runat="server" Text="Canada">
                                                <Nodes>
                                                    <telerik:RadTreeNode runat="server" Text="Toronto">
                                                    </telerik:RadTreeNode>
                                                    <telerik:RadTreeNode runat="server" Text="Ottawa">
                                                    </telerik:RadTreeNode>
                                                    <telerik:RadTreeNode runat="server" Text="Vancouver">
                                                    </telerik:RadTreeNode>
                                                </Nodes>
                                            </telerik:RadTreeNode>
                                            <telerik:RadTreeNode runat="server" Text="Mexico">
                                                <Nodes>
                                                    <telerik:RadTreeNode runat="server" Text="Mexico City">
                                                    </telerik:RadTreeNode>
                                                    <telerik:RadTreeNode runat="server" Text="Cancun">
                                                    </telerik:RadTreeNode>
                                                </Nodes>
                                            </telerik:RadTreeNode>
                                        </Nodes>
                                    </telerik:RadTreeNode>
                                </Nodes>
                            </telerik:RadTreeView>
                        </div>
                    </ItemTemplate>
                    <Items>
                        <telerik:RadComboBoxItem Text="" />
                    </Items>
                </telerik:RadComboBox>

                <script type="text/javascript">
                    var div1 = document.getElementById("div1");
                    div1.onclick = StopPropagation;
                </script>

                <asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator3" ErrorMessage="Choose a destination first" ControlToValidate="RadComboBox1" />
            </div>
        </td>
    </tr>
    <tr id="trFiles" runat="server" visible="false">
        <td></td>
        <td>
            <asp:TextBox ID="fileName" runat="server" Width="350px"></asp:TextBox>
            <asp:Button ID="selectFile" OnClientClick="OpenFileExplorerDialog(); return false;" Text="Browse" runat="server" />
        </td>
    </tr>
    <tr id="trURL" runat="server" visible="false">
        <td></td>
        <td>
            <telerik:RadTextBox ID="txtURL" runat="server" Width="350px" Text="http://"></telerik:RadTextBox>
        </td>
    </tr>
    <tr>
        <td>Start Date:</td>
        <td>
            <telerik:RadDatePicker ID="RadDatePicker1" runat="server" ></telerik:RadDatePicker>
            <asp:CompareValidator ID="CompareValidator1" runat="server" ControlToValidate="RadDatePicker1" ErrorMessage="Date can't be earlier than today" Operator="GreaterThanEqual" Type="Date" ValueToCompare='<%# DateTime.Now.ToShortDateString() %>' Display="Dynamic"></asp:CompareValidator>
        </td>
    </tr>
    <tr>
        <td>End Date:</td>
        <td>
            <telerik:RadDatePicker ID="RadDatePicker2" runat="server"></telerik:RadDatePicker>
            <asp:CompareValidator ID="CompareValidator2" runat="server" ControlToValidate="RadDatePicker2" ErrorMessage="End date can't be earlier than today or earlier than start date" Operator="GreaterThanEqual" Type="Date" ValueToCompare='<%# DateTime.Now.ToShortDateString() %>' ControlToCompare="RadDatePicker1" Display="Dynamic"></asp:CompareValidator>
        </td>
    </tr>
    <tr>
        <td>Publish:</td>
        <td>
            <asp:CheckBox ID="CheckBox1" runat="server"  />
        </td>
    </tr>
    <tr>
        <td>Category:</td>
        <td>
            <telerik:RadComboBox ID="RadComboBox3" runat="server" MarkFirstMatch="true" OnLoad="RadComboBox3_Load" DataTextField="categoryName" DataValueField="categoryID" SelectedValue='<%# DataBinder.Eval(Container, "DataItem.categoryID") %>' AppendDataBoundItems="true"></telerik:RadComboBox>
            <asp:RequiredFieldValidator ID="RequiredFieldValidator6" ControlToValidate="RadComboBox3" ErrorMessage="*" runat="server" Display="Dynamic" InitialValue="Select category"></asp:RequiredFieldValidator>
        </td>
    </tr>
    <tr>
        <td align="right" colspan="2">
            <asp:ImageButton ID="btnUpdate" runat="server" CommandName="Update" Visible='<%# Not (TypeOf DataItem Is Telerik.Web.UI.GridInsertionObject) %>' ImageUrl="/Themes/images/Update.gif" />
            <asp:ImageButton ID="btnInsert" runat="server" CommandName="PerformInsert" Visible='<%# (TypeOf DataItem Is Telerik.Web.UI.GridInsertionObject) %>' ImageUrl="/Themes/images/Update.gif" />
            <asp:ImageButton ID="btnCancel" runat="server" CommandName="Cancel" CausesValidation="false" ImageUrl="/Themes/images/Cancel.gif" />
        </td>
    </tr>
</table>

Imports Telerik.Web.UI
Imports System
Imports System.Data
Imports System.Configuration
Imports System.Collections
Imports System.Web
Imports System.Web.Security
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports System.Web.UI.WebControls.WebParts
Imports System.Web.UI.HtmlControls

Partial Public Class LinksEdit
    Inherits System.Web.UI.UserControl

    Private _dataItem As Object = Nothing

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not Page.IsPostBack Then

        End If
    End Sub

#Region "Web Form Designer generated code"

    Protected Overrides Sub OnInit(ByVal e As EventArgs)
        '
        ' CODEGEN: This call is required by the ASP.NET Web Form Designer.
        '
        InitializeComponent()
        MyBase.OnInit(e)
    End Sub 'OnInit


    '/ <summary>
    '/      Required method for Designer support - do not modify
    '/      the contents of this method with the code editor.
    '/ </summary>
    Private Sub InitializeComponent()
        AddHandler DataBinding, AddressOf Me.Details_DataBinding
    End Sub 'InitializeComponent

#End Region

    Protected Sub Details_DataBinding(ByVal sender As Object, ByVal e As System.EventArgs)
        If Not DataBinder.Eval(DataItem, "startDate").Equals(DBNull.Value) Then
            RadDatePicker1.SelectedDate = DataBinder.Eval(DataItem, "startDate")
        End If

        If Not DataBinder.Eval(DataItem, "endDate").Equals(DBNull.Value) Then
            RadDatePicker2.SelectedDate = DataBinder.Eval(DataItem, "endDate")
        End If

        If Not DataBinder.Eval(DataItem, "publish").Equals(DBNull.Value) Then
            CheckBox1.Checked = DataBinder.Eval(DataItem, "publish")
        End If
    End Sub

    Public Property DataItem() As Object
        Get
            Return Me._dataItem
        End Get
        Set(ByVal value As Object)
            Me._dataItem = value
        End Set
    End Property

    Protected Sub checkTitle(ByVal [source] As Object, ByVal args As System.Web.UI.WebControls.ServerValidateEventArgs)
        Dim dt As DataTable = CType(Session("dt"), DataTable)

        For i As Integer = 0 To dt.Rows.Count - 1
            If String.Compare(args.Value, dt.Rows(i).Item("title"), True) = 0 Then
                If (Session("editedItemID") = 0) Or (Not Session("editedItemID") = dt.Rows(i).Item("linkID")) Then
                    args.IsValid = False
                    Exit For
                Else
                    args.IsValid = True
                End If
            End If
        Next
    End Sub

    Protected Sub RadComboBox3_Load(ByVal sender As Object, ByVal e As System.EventArgs)
        Dim dt As New DataTable
        dt.Columns.Add(New DataColumn("categoryID"))
        dt.Columns.Add(New DataColumn("categoryName"))

        dt.Columns(0).DataType = System.Type.GetType("System.Int32")
        dt.Columns(1).DataType = System.Type.GetType("System.String")

        Dim dr As DataRow = dt.NewRow
        dr.Item(0) = 1
        dr.Item(1) = "AA"
        dt.Rows.Add(dr)

        dr = dt.NewRow
        dr.Item(0) = 2
        dr.Item(1) = "BB"
        dt.Rows.Add(dr)

        dr = dt.NewRow
        dr.Item(0) = 3
        dr.Item(1) = "CC"
        dt.Rows.Add(dr)

        dr = dt.NewRow
        dr.Item(0) = 4
        dr.Item(1) = "DD"
        dt.Rows.Add(dr)

        RadComboBox3.DataSource = dt

        Dim baseItem As New RadComboBoxItem
        baseItem.Text = "Select category"
        baseItem.Value = "0"
        RadComboBox3.Items.Add(baseItem)
    End Sub

    Private Sub RadComboBox2_SelectedIndexChanged(ByVal o As Object, ByVal e As Telerik.Web.UI.RadComboBoxSelectedIndexChangedEventArgs) Handles RadComboBox2.SelectedIndexChanged
        Select Case e.Value
            'Case 0
            '    trPages.Visible = False
            '    trFiles.Visible = False
            '    trURL.Visible = False
            Case 1
                trPages.Visible = True
                trFiles.Visible = False
                trURL.Visible = False
            Case 2
                trPages.Visible = False
                trFiles.Visible = True
                trURL.Visible = False
            Case 3
                trPages.Visible = False
                trFiles.Visible = False
                trURL.Visible = True
        End Select
    End Sub

    'Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs)
    '    Label1.Text = "You selected " + RadComboBox1.Text
    '    RadComboBox1.Items(0).Text = RadComboBox1.Text
    'End Sub

End Class

really appreciated

[Veronica]

Hello,

I've attached a vide presentation of what I get when i tried your code. Please could you tell me what Browser do you use to test the project? My video screen capture is made with IE8. I also tested the example with IE7 and Firefox.


Greetings,
Veronica Milcheva
the Telerik team

Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.

[pavan]

Hello,
I have implemented the same code which is in the telerik demo site (application scenarios->treeview in combo box) .Whenever i am trying to select a treeview item from the combo box i am able to do it for the first time.(I havent included the submit button and the label).If i want to select another element from the tree view from the combobox for the second time the tree view is not at all being displayed.can u suggest a solution for this?
I am attaching my code. 

[Veronica]

Hi pavan,

Unfortunately I haven't received your code. Can you try to send it again please?

Thank you!

Kind regards,
Veronica Milcheva
the Telerik team

[pavan]

<%@ Page AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Default"
    Language="c#" %>
<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>Untitled Page</title>
    <meta http-equiv="refresh" content="10" />
</head>
<body>

    <form runat="server" id="form1" method="post">
        <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
 
        <telerik:RadFormDecorator ID="FormDecorator1" runat="server" DecoratedControls="all" ControlsToSkip="Scrollbars"></telerik:RadFormDecorator>
        <script type="text/javascript">       
            function nodeClicking(sender, args)
            {
                var comboBox = $find("<%= RadComboBox1.ClientID %>");

                var node = args.get_node()

                comboBox.set_text(node.get_text());

                comboBox.trackChanges();
                comboBox.get_items().getItem(0).set_text(node.get_text());
                comboBox.commitChanges();

                comboBox.hideDropDown();
            }
           
//  function timedRefresh(timeoutPeriod)
//{
// setTimeout("location.reload(true);",timeoutPeriod);
//}

 

            function StopPropagation(e)
            {
                if(!e)
                {
                    e = window.event;
                }

                e.cancelBubble = true;
            }
           
            function OnClientDropDownOpenedHandler(sender, eventArgs)
            {
            try{
                var tree = sender.get_items().getItem(0).findControl("RadTreeView1");
                var selectedNode = tree.get_selectedNode();
                if (selectedNode)
                {
                    selectedNode.get_element().scrollIntoView();
                }
                }
                catch(e)
                {
               
                }
            }
     </script>
<%--//                   <p>
//<a href="javascript:timedRefresh(2000)"></a>
//</p> --%>
 Fiscal Period:
            <telerik:RadComboBox ID="RadComboBox1" runat="server" Height="140px" Width="215px"
                ShowToggleImage="True" Style="vertical-align: middle;" AutoPostBack="true" OnClientDropDownOpened="OnClientDropDownOpenedHandler"
                EmptyMessage="SELECT FISCAL PERIOD" ExpandAnimation-Type="None" CollapseAnimation-Type="None">
                <ItemTemplate>
                    <div id="div1">
                        <telerik:RadTreeView runat="server" ID="RadTreeView1"  AutoPostBack="true"
                         OnClientNodeClicking="nodeClicking" Height="138px" Width="212px">
<Nodes>
                                <telerik:RadTreeNode runat="server" Text="FY1" Expanded="true">
                                    <Nodes>
                                        <telerik:RadTreeNode runat="server" Text="H1">
                                            <Nodes>
                                                <telerik:RadTreeNode runat="server" Text="Q1">
                                                </telerik:RadTreeNode>
                                                <telerik:RadTreeNode runat="server" Text="Q2">
                                                </telerik:RadTreeNode>
                                            </Nodes>
                                        </telerik:RadTreeNode>
                                        <telerik:RadTreeNode runat="server" Text="H2">
                                            <Nodes>
                                                <telerik:RadTreeNode runat="server" Text="Q3">
                                                </telerik:RadTreeNode>
                                                <telerik:RadTreeNode runat="server" Text="Q4">
                                                </telerik:RadTreeNode>
                                            </Nodes>
                                        </telerik:RadTreeNode>
                                     </Nodes>
                                  </telerik:RadTreeNode>
                            </Nodes>
                        </telerik:RadTreeView>
                    </div>
                </ItemTemplate>
                <Items>
                    <telerik:RadComboBoxItem Text="" />
                </Items>
            </telerik:RadComboBox>
 
           <%-- <script type="text/javascript">
                var div1 = document.getElementById("div1");
                div1.onclick = StopPropagation;
            </script>--%>
              </form>
</body>
</html>

                                     

 

-------------------------------------------------------------------------------------------------------------------------------------------------------------------------

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using Telerik.Web.UI;

public partial class Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
   
{
    RadTreeView obj_radTimeTree =
                (RadTreeView)RadComboBox1.Controls[2].FindControl("RadTreeView1");

    obj_radTimeTree.ExpandAllNodes();

    }
  

}

[Veronica]

Hello pavan,

This is a known issue and it is fixed in Q1 2010 and upper versions.

Please let me know if upgrading to a newer version is an option for you.

Best wishes,
Veronica Milcheva
the Telerik team

[pavan]

Hello,
I didn't get what Q1 2010  and upper versions meant in ur reply.

[Veronica]

Hello pavan,

In my previous post I mean that this is a known issue in the 2009.3 1314 which we fixed in Q1 2010 (2010.1.309) and upper versions.

So, to be able to get this fixed - you'll need to upgrade to a later version.

Kind regards,
Veronica Milcheva
the Telerik team

[pavan]

Hi,
Actually i am using the same version of dll i.e 2010.1.309 .Even i am getting the same problem.

[Veronica]

Hi pavan,

Please accept my apologies.

I've tested with version 2010.1.309 but it seems the site was cached and I was not able to see the problem.

The real version in which the problem is fixed is 2010.1.415:

Fixed: The client-side RadComboBoxItem.set_text() method clears the content of the ItemTemplate (if any)

Regards,
Veronica Milcheva
the Telerik team

[Rene de Vries]

Hi Veronica,

Is there a workaround if upgrading is not an option at the moment?

[Veronica]

Hi Rene de Vries,

Unfortunately the fix is not that simple. There is no workaround for previous versions.

Please accept our apologies for the caused inconvenience.

All the best,
Veronica MIlcheva
the Telerik team