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Assigning DisplayMember to Entity Reference

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Treeview

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

Onur Tezic asked on 01 Dec 2009, 01:29 PM

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.

Assigning DisplayMember to Entity Reference

2 Answers, 1 is accepted