I have added a treeview with data being loaded from a database - this works fine

Now I would like to know how I can load the data in a detailsview for the node the user has clicked.

A small example - the tree will contain the name of the web pages in the CMS - when the user click on a node the web page data should be loaded in a detailsview for viewing and editing

Any comments appreciated

The item click event seems not to respond

here is the the code which is populating the tree

Dim Conn As New System.Data.SqlClient.SqlConnection
Conn.ConnectionString = ConfigurationManager.ConnectionStrings("ConnectionString").ToString
Dim SQLCMd As System.Data.SqlClient.SqlCommand = New System.Data.SqlClient.SqlCommand("SELECT PageID, PageParent, PageName from WebPages ORDER BY PageParent, PageSequence, PageName", Conn)
Dim da As New System.Data.SqlClient.SqlDataAdapter
da.SelectCommand = SQLCMd
Dim ds As New System.Data.DataSet
da.Fill(ds, "WebPages")
Conn.Close()

Dim parentColumn As DataColumn = ds.Tables("Webpages").Columns("PageParent")
Dim pageColumn As DataColumn = ds.Tables("Webpages").Columns("PageID")

Dim r As DataRelation = ds.Relations.Add(pageColumn, parentColumn)
r.Nested = True

Me.tvSingleExpand.DataSource = ds

Dim binding As New EO.Web.DataBinding()
binding.DataField = "PageName"
binding.Property = "Text-Html"
Me.tvSingleExpand.Bindings.Add(binding)

Me.tvSingleExpand.DataBind()

I am using the control in asp.net 2 with AJAX

Comments appreciated

Hi,
Thanks for the tip - it worked - now the event is raised on the server side

Now how do I populate the key information.

Comments appreciated

Hi,
Thanks for the suggestion - It works perfect

The last issue now remains. We are using Ms Ajax update panel. When the update panel is attached to trigger when the item is clicked we get the following error:

The 'ItemClick' event on associated control 'tvSingleExpand' for the trigger in UpdatePanel 'UpdatePanel1' does not match the standard event handler signature.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: The 'ItemClick' event on associated control 'tvSingleExpand' for the trigger in UpdatePanel 'UpdatePanel1' does not match the standard event handler signature.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[InvalidOperationException: The 'ItemClick' event on associated control 'tvSingleExpand' for the trigger in UpdatePanel 'UpdatePanel1' does not match the standard event handler signature.]
System.Web.UI.AsyncPostBackTrigger.Initialize() +655
System.Web.UI.UpdatePanelTriggerCollection.Initialize() +65
System.Web.UI.UpdatePanel.Initialize() +37
System.Web.UI.UpdatePanel.OnLoad(EventArgs e) +51
System.Web.UI.Control.LoadRecursive() +47
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1061


Any comment appreciated

Unfortunately it did not work. I placed the dataview in a callback (you own) and attached the callback to the item click. Everything is inside the update panel from Microsoft for other functionality and now works as it should

There is nothing special you need to do. Just make sure the TreeView is inside the CallbackPanel. Nothing outside of the CallbackPanel will be updated.