Question

In WPF app I have a ListView which is connected with ObservableCollection ShQuCollection through databinding:

<ListView Name="ShSelList" ItemsSource="{Binding Source={StaticResource myDataSource},Path=ShQuCollection}" SelectionChanged="ShSelList_SelectionChanged">
   <ListView.View>
       <GridView>
         <GridViewColumn Header="Code" DisplayMemberBinding="{Binding StrCode}"/>
         <GridViewColumn Header="Date" DisplayMemberBinding="{Binding Date}"/>
         <GridViewColumn Header="Time" DisplayMemberBinding="{Binding Time}"/>
        </GridView>
   </ListView.View>
</ListView>

From inside ListView SelectionChanged event handler I need to call a method and pass to it a string parameter, taking it from one of the field of the selected row of the ObservableCollection ShQuCollection.

How I could reference the ObservableCollection from inside ListView SelectionChanged event handler?

private void ShSelList_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        ...?????
    }

Edited (added):

My ObservableCollection is in code-behind file of another window and I use Window.Resources declaration to reach it.

<Window.Resources>
    <c:ShWindow x:Key="myDataSource"/>
</Window.Resources>

And ObservableCollection looks like:

        ObservableCollection<ShsQu> _ShQuCollection =
            new ObservableCollection<ShsQu>();

    public ObservableCollection<ShsQu> ShQuCollection
    { get { return _ShQuCollection; } }

    public class ShsQu
    {
        public string StrCode { get; set; }
        public string Date { get; set; }
        public string Time { get; set; }
    }

Answer 1

I am assuming your ModelView is attached to your View. Meaning ShQuCollection should be a public property within your ModelView. You should just have to access the ObservableCollection through your ModelView.

Update:

To Reach the record in which you need to modify you grab the current selectedIndex from your listView.

private void ShSelList_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
   string s = ShQuCollection[ShSelList.SelectedIndex].StrCode;
}

Note: It would be cleaner in the future to use the MVVM approach.