This is a migrated thread and some comments may be shown as answers.

Problem with Treeview in combobox after installing latest release

6 Answers 84 Views
TreeView
This is a migrated thread and some comments may be shown as answers.
Lance
Top achievements
Rank 1
Lance asked on 20 Sep 2008, 10:20 PM
I  have a Treeview in a combobox that was working fine until I installed the latest version of the controls.  Now the treeview just looks like a list (no clickable expand images, etc...) 

it basically looks like:
  • Node1
  • Node2
  • Node3
  • Node4

Nothing in the code changed, and the treeview works fine outside of the combo box, but not inside..

Any idea where to start looking for the problem?

6 Answers, 1 is accepted

Sort by
0
Serrin
Top achievements
Rank 1
answered on 23 Sep 2008, 01:54 PM
Hey Lance,

Does your code end up looking anything like what is in this online example?

Treeview in ComboBox

I just copied everything from <telerik:RadComboBox> to the closing tag and it pulls up just like in the online demo.  I'm also using the latest version, so the version shouldn't be a problem...  Maybe you could post the code you are using so we can take a stab at debugging where the problem is at? :)

-Serrin
0
Lance
Top achievements
Rank 1
answered on 23 Sep 2008, 02:36 PM

Thanks,
It looks pretty much the same.  I am using loadOnDemand (which I was using prior to the upgrade without problem) 

Here is the code:

 <telerik:RadComboBox ID="RadComboBox2" runat="server"   
                                EnableEmbeddedSkins="true"  Height="320px"   
                                Skin="Outlook" Width="450px">  
                                <CollapseAnimation Duration="200" Type="OutQuint" /> 
                                <ItemTemplate> 
                                    <div id="<%= RadCombobox2.clientid %>div">  
                                    <telerik:RadTreeView ID="RadTreeView1" Runat="server" 
                                        OnClientNodeClicking="nodeClicking" 
                                        LoadingStatusPosition="BelowNodeText" 
                                        LoadingMessage="Loading..." 
                                        SingleExpandPath="true" 
                                        OnNodeExpand="RadTreeView1_NodeExpand" 
                                        AllowNodeEditing="false" 
                                        EnableDragAndDropBetweenNodes="false" 
                                        EnableDragAndDrop="false" 
                                        MultipleSelect="false" 
                                        EnableEmbeddedSkins="true"   
                                        Skin="Outlook" 
                                        ShowLineImages="true" 
                                        > 
                                        <CollapseAnimation Type="OutQuint" Duration="100"></CollapseAnimation> 
                                        <ExpandAnimation Duration="100"></ExpandAnimation> 
                                    </telerik:RadTreeView> 
                                   </div> 
                                </ItemTemplate> 
                                <Items> 
                                    <telerik:RadComboBoxItem Text="" /> 
                                </Items> 
 
                                 
                            </telerik:RadComboBox> 
                            <script type="text/javascript">  
                                var div1 = document.getElementById("<%= RadCombobox2.clientid %>div");  
                                div1.onclick = StopPropagation;  
                            </script> 


The code that adds the nodes serverside:
Private Sub addNodes(ByVal parentNode As RadTreeNode, ByVal Treeview As RadTreeView)  
       'SQL Queries to populate the dataReader  
       Do Until dr.Read = False 
            Dim childNode As New RadTreeNode  
            childNode.Text = dr("Description"'IIf(dr("Description").ToString.Length > 20, Left(dr("Description"), 20) & "...", dr("Description"))  
            childNode.LongDesc = dr("Description")  
            childNode.ToolTip = dr("Description")  
            childNode.Value = dr("CatID").ToString  
            If dr("ChildCount") > 0 Then 
                childNode.ExpandMode = TreeNodeExpandMode.ServerSideCallBack  
            End If 
            If bUseTreeRoot Then 
                Treeview.Nodes.Add(childNode)  
            Else 
                node.Nodes.Add(childNode)  
            End If 
 
        Loop 
End Sub 
0
Simon
Telerik team
answered on 23 Sep 2008, 05:41 PM
Hello Lance,

This issue is quite strange as I also tried running the example with your version of Telerik.Web.UI (2008.2 826) and it looked fine.

Could you open a support ticket and send us a simple project or a page exhibiting the problem? We will investigate it and will try to provide a solution or a workaround. We will post the solution in this forum thread as well.

Best wishes,
Simon
the Telerik team

Check out Telerik Trainer, the state of the art learning tool for Telerik products.
0
Lance
Top achievements
Rank 1
answered on 24 Sep 2008, 01:15 AM
Hi,
I think I've narrowed it down. 
It seems that there are several controls that need to exist on the page to cause this behavior.

I have a page with a RadUpload control, a Progress Indicator, and the combo/treeview inside a TabStrip/MultiView. 

Here is the ASPX, no code-behind is needed for this sample.

        <telerik:RadUpload  ID="File"  runat="server" MaxFileInputsCount="1"  Width="400" ControlObjectsVisibility="None" InitialFileInputsCount="1" AllowedFileExtensions=".zip,.ppt,.pptx,.mpg,.mpeg,.mov,.wmv,.avi" /> 
        <telerik:RadProgressManager ID="RadProgressManager1" runat="server" /> 
        <telerik:radprogressarea EnableEmbeddedSkins="true" Skin="Vista" id="progressArea1" runat="server" ></telerik:radprogressarea> 
        <script type="text/javascript">  
 
            function nodeClicking(sender, args) {  
                var comboBox = $find('<%= RadCombobox2.clientid %>');  
                var node = args.get_node()  
                comboBox.set_text(node.get_text());  
                comboBox.hideDropDown();  
            }  
            function StopPropagation(e) {  
                if (!e) {  
                    e = window.event;  
                }  
 
                e.cancelBubble = true;  
            }  
 
        </script> 
      
    <telerik:RadTabStrip ID="RadTabStrip1"  CausesValidation="false" EnableEmbeddedSkins="true" Skin="Vista" MultiPageID="RadMultiPage1" SelectedIndex="0" runat="server">  
        <Tabs> 
            <telerik:RadTab runat="server" Text="Categories">  
            </telerik:RadTab> 
        </Tabs> 
    </telerik:RadTabStrip> 
      
    <telerik:RadMultiPage   BorderWidth="1px" BorderColor="#dddddd" ID="RadMultiPage1" Runat="server" SelectedIndex="0" Width="100%" Height="60px">  
        <telerik:RadPageView ID="RadPageView2" runat="server">  
            <telerik:RadComboBox ID="RadComboBox2" runat="server"   
                EnableEmbeddedSkins="true"  Height="320px"   
                Skin="Vista" Width="450px" ExpandAnimation-Type="None" CollapseAnimation-Type="None">  
                <ItemTemplate> 
                    <div id="<%= RadCombobox2.clientid %>div">  
                    <telerik:RadTreeView ID="RadTreeView1" Runat="server" 
                        EnableEmbeddedSkins="true"   
                        Skin="Vista" 
                        ShowLineImages="true" 
                        > 
                        <Nodes> 
                        <telerik:RadTreeNode Text="test1"></telerik:RadTreeNode> 
                        <telerik:RadTreeNode Text="test1"></telerik:RadTreeNode> 
                        <telerik:RadTreeNode Text="test1"></telerik:RadTreeNode> 
                        </Nodes> 
                    </telerik:RadTreeView> 
                   </div> 
                </ItemTemplate> 
                <Items> 
                    <telerik:RadComboBoxItem Text="" /> 
                </Items> 
 
                 
            </telerik:RadComboBox> 
            <script type="text/javascript">  
                var div1 = document.getElementById("<%= RadCombobox2.clientid %>div");  
                div1.onclick = StopPropagation;  
            </script> 
        </telerik:RadPageView> 
    </telerik:RadMultiPage>           
     
 
0
Simon
Telerik team
answered on 26 Sep 2008, 01:41 PM
Hi Lance,

I tried to reproduce the issue once again but to no avail.

Please examine the attached page. Could you point out what needs to be modified in it, so that the problem starts to appear?

Regards,
Simon
the Telerik team

Check out Telerik Trainer, the state of the art learning tool for Telerik products.
0
Lance
Top achievements
Rank 1
answered on 26 Sep 2008, 09:10 PM
The problem appearred with the code exactly as it was.  I uninstalled, and re-installed the Telerik Controls and the problem went away.  Maybe something got left from an old version or something...  Very odd, but it is working now.

Thanks
Lance
Tags
TreeView
Asked by
Lance
Top achievements
Rank 1
Answers by
Serrin
Top achievements
Rank 1
Lance
Top achievements
Rank 1
Simon
Telerik team
Share this question
or