Is it possible to bind the first element in a collection in a datagrid?

Question

I have a datagrid and I need to bind a property in the first element of the collection of my datasource object. By the momento I am using a converter:
<DataGridTextColumn Header="MyValue" Binding="{Binding Converter={StaticResource myConverter}}"/>
But I would like to avoid the need to use a converter, so I have tried this:
<DataGridTextColumn Header="MyValue" Binding="{Binding MyCollectionProperty.ElementAt(0).MyValue}"/>
Is there any way to do it?

Answer 1

You cannot call ElementAt(i) from the XAML because it is a method.
MyCollectionProperty[0] will certainly get you the first value of the MyCollectionProperty collection provided that the type has an indexer.
If you want to be able to this without using a converter you must change the type of the property from ICollection<T> to for example IList<T>.
You could create a wrapper property (potentially in a partial class definition) and bind to this one:
//old property:
public ICollection<YourType> MyCollectionProperty {
get;
set;
//new wrapper:
public IList<YourType> MyCollectionPropertyWrapper {
get {
return new List<YourType>(this.MyCollectionProperty);
<DataGridTextColumn Header="MyValue" Binding="{Binding MyCollectionPropertyWrapper[0].MyValue}"/>
ICollections are not very XAML friendly and you cannot bind to the first item of an ICollection using an indexer or ElementAt(0) or any other direct way.
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