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WPF - How to reuse listbox for display of different lists of objects?

Answer 1

A:

Funny, I just asked a very similar question about the DataGrid.

What you could do is create a custom collection of ListBoxItem objects for every type of search object and add those items to the ListBox at runtime.

List<ListBoxItem> lbiTest = GetListBoxItems();
foreach (ListBoxItem lbi in lbiTest)
{  
  lbMyListBox.Items.Add(lbi);
}

kzen 2010-10-21 18:43:01

Doesn't adding the items into my ListBox manually defeat the purpose of DataBinding?

Sonny Boy 2010-10-21 18:44:14

That was my question exactly... it is also going against the MVVM guidelines by making your ViewModel aware of specific UI controls... hopefully someone could share some good insight...

kzen 2010-10-21 18:44:59

Answer 2

+1 A:

There a couple of options I can think of.

Create a datatemplate for each object in the listbox
Create a wrapper class and bind your listbox to a list of those wrapper classes. It would take a little work to create a constructor (or other method) for every possible search result class.

mdm20 2010-10-21 18:51:47

#1 did the trick. I set the different templates in the code behind with something like this: `this.lstSearchResults.ItemTemplate = (DataTemplate)this.FindResource("clientListing");` where "clientListing" is the name of the template I wanted to use. :)

Sonny Boy 2010-10-21 19:11:40

If you set the TargetType in your datatemplate and get rid of the key, I don't think you even have to set the itemtemplate.. it will find it automatically.

mdm20 2010-10-21 19:33:58

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WPF - How to reuse listbox for display of different lists of objects?

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