I am seeing an issue with having a Drop Down Tree View and having the drop down text area set at run time, the issue is when I select a tree view node the first time, the drop down text area becomes blank. But selecting a second node and then after, the drop down text area shows the selected node.

The interesting part is the first select I am able to get the node’s data that was selected, which I use with “comboBox.set_text(node.get_text());” to set the drop down text area. Although the comboBox object shows that its text was set, the page still shows the drop down text area as blank.  

I tried multiple approaches to try to solve this but each one ending  up in the same result.

If I do not set the drop down text at run time, then the issue of selecting a node the first time goes away. I need to have the drop down text set at run time.

I implemented the Drop Down Tree View control into two user controls; one control to handle the Drop Down and the other to handle the Tree View.  I have included the code, the .ascx, .cs and .js info of the controls with some explanation of each

Drop Down  .ascx Page

Simple enough just the drop down that has the tree view user control embedded and the OnClientNodeClicked is handled by the javascript.

Hi,

I cannot find an adequate example of what I am trying to do. I'd appreciate any help or references to solve this problem:

I have a RadGrid with a custom edit form. In the form I would like to have two RadComboBoxes, say rcbState and rcbCity. I would like the rcbCity to automatically refresh its contents if rcbState changes. Again, I need to do this within the RadGrid FormTemplate.

I am using SQL Datasources:

<asp:SqlDataSource ID="sdsStates" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>" ProviderName="<%$ ConnectionStrings:ConnectionString.ProviderName %>" SelectCommand="SELECT * FROM [states] order by state_name"></asp:SqlDataSource>

I don't know what to do for the second "city" datasource.

I am currently using DropDownLists:

                                        <asp:DropDownList ID="ddlStateID" runat="server" SelectedValue='<%# Bind("state_id") %>' AppendDataBoundItems="True" DataSourceID="sdsStates" DataTextField="state_name" CssClass="select" DataValueField="state_id">
                                            <asp:ListItem Selected="True" Text="Select" Value=""></asp:ListItem>
                                        </asp:DropDownList>

... mostly because I can't find an equivalent easy method of binding for the RadComboBox.

Any help is greatly appreciated!

Thanks,
Joseph