Can I bind to the data source object itself?

Question

Say I have a ListView with a datasource list called DS

data-win-options="{ itemDataSource: NameSpace.DS.datasource, 

Say DS has just two objects inside it, with two fields A and B:

DS: new WinJS.Binding.List([ { A: 1, B: 2 }, { A: 3, B: 4 } ])

Now, in my template, say I have an element that depends on both A and B (say it needs to show the sum of A and B). So, I need to do one of the following: 

• Bind this element to the two fields, and use a converter to return the sum of the two fields.
• Bind the element to the object itself, and then use a converter to return the sum of the two fields.
• Bind the element to A, and inside the converter, use the index of the current object to get the value of B. In this case, I need a way to get the index of current object in the converter.
  

Is any of these possible? Or is there any other way I can achieve what I want to?

Answer 1

Hi,

I think you could data rebuild before databind. Then just bind to the listview.

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