Hello again,

I have a problem with the Treeview web control.I populate the tree using a generated XML.It also uses populate on demand where the apropriate XML i generated on server and sent to the client.The tree is builded on some parameters such as date, group(indicates the tree root) which can be changed by the users on the interface. The tree works fine and also the populate on demand, also the filtering rebuilds the tree as it should. The problem is that when i click the  + sign to invoke  populate on demand and the tree is updated after that if i want to change the filter(which is done through a postback) the tree remains the same after the first postback and changes as it should on the succesive postbacks till another populate on demand and again the first filter postback doesn't change the tree.

Am i doing something wrong or this is the way it works?

Thanks in advance!

The tree filters are implemented as server controls and they fire their own events.

I have a method FillTreeView(groupID) which generates the apropriate XML and assigns it  to the tree through LoadXML.

The flow is as follows :

Page_Load->Not IsPostBack->FillTreeView(root)------OK

GroupsDropDownList->SelectedIndexChanged->Event Handdler->FillTreeView(GroupsDropDownList.SelectedValue)-----OK

POD->FillTreeView(e.Node.id)------OK

GroupsDropDownList->SelectedIndexChanged->Event Handdler->FillTreeView(GroupsDropDownList.SelectedValue)--------not OK the tree doesn't change

GroupsDropDownList->SelectedIndexChanged->Event Handdler->FillTreeView(GroupsDropDownList.SelectedValue)(another value)------OK

The problem with the first filter postback after a callback has occured is that the tree should be changed completely because its root changes but nothing happens.

I have stepped through the method code and everything is as it should be.

When the method is called from e filter postback the treeview xml(mTreeView.TreeNodews.XMLDoc.OuterXML) before the new xml is loaded contains also the xml created from POD.

The new xml which is completely different from the previous  one is loaded in the tree through the LoadXML and I checked that mTreeView.TreeNodews.XMLDoc.OuterXML is changed but in the client the tree remains the same as before the postback.The xml string in the __dnnVariable hidden field in the client doesn't change, it doesn't reflect the server side changes.

If i change again  a filter property and do postback everything works fine.

I'll try to put the app somewhere and the source code also.

Thanks for your response.