Assigning DisplayMember to Entity Reference in UI for WinForms Treeview

Onur Tezic

3 posts

Member since:
Sep 2009

Posted 01 Dec 2009 Link to this post

Hi,

Here is the problem :

I have a binding source (bsCustomers) filled with neccessary data from the database with entity framework.

When i checked the bsCustomers i can see the values are not NULL.

My treeview control`s (rtvCustomers) datasource is bsCustomers and I want to assign rtvCustomers.DisplayMember to Name field which is in tbContacts.

bsCustomer has --> tbContact.
tbContact has --> Code, Name.

So when i say

    
            this.tvCustomers.RootRelationDisplayName = "Customers";  
        
            this.tvCustomers.DisplayMember = "tbContact.Name";  
        
            thisthis.tvCustomers.DataSource = this.bsCustomers;

it doesnt work. (In radgridview such assignment ("tbContact.Name") works properly.)

As a solution in NodeCollectionChange

    
            void Nodes_CollectionChanged(object sender, Telerik.WinControls.Data.NotifyCollectionChangedEventArgs e)  
        
                    {  
        
                        if(e.Action==Telerik.WinControls.Data.NotifyCollectionChangedAction.Add)  
        
                        {  
        
                            if (((RadTreeNode)e.NewItems[0]).Level == 0)  
        
                                return;  
        
                            ((RadTreeNode)e.NewItems[0]).Text = ((Customer)this.bsCustomers[e.NewStartingIndex]).tbContact.Name;  
        
                        }  
        
                    }

and it worked. I filled the treeview with customer Names. But i guess there must be another solution.

So is there any other solution to get treeview filled with Names?

Thanks.

Nikolay

Admin

1805 posts

Posted 07 Dec 2009 Link to this post

Hello Onur Tezic,

Currently, RadTreeView does not support binding to subproperties. We will implement this feature in one of our next versions. I have logged this as a feature request in our issue tracking system.

Your Telerik points have been updated for the feedback.

Regards,
Nikolay
the Telerik team

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Stefan

Admin

2911 posts

Posted 22 Mar 2011 Link to this post

Hi Onur Tezic,

Please note that in Q1 2011 we have introduced a major upgrade of RadTreeView control, which is now virtualized and fully customizable. Feel free to download the latest release and try it out. For more information on our latest release refer to this blog post.

Kind regards,
Stefan
the Telerik team

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